Free Online Calculators for Math, Science & Finance
Our calculators cover fractions, percentages, geometry, and advanced mathematics instantly.
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All Free Online Calculators
Math, Science & Finance
Fraction
Add, subtract, multiply, and divide fractions with step-by-step solutions.
Scientific
Advanced online tools for trigonometry, logarithms, and exponential functions.
Percentage
Calculate percentages, percentage change, and find what percent one number is of another.
Average
Find the mean, median, mode, and range of a data set instantly.
GPA
Calculate your high school or college Grade Point Average (GPA).
Grade
Calculate what grade you need on your final exam or remaining assignments to reach your target.
Study Schedule Generator
Generate a personalized study revision timetable based on exam dates and availability.
Geometry
Calculate area, perimeter, surface area, and volume of 2D and 3D geometric shapes.
Standard Deviation
Calculate sample and population standard deviation and variance.
Random Number Generator
Generate truly random numbers within a custom range.
Prime Number Checker
Check if a number is prime and find its prime factorization.
Fibonacci Generator
Generate the Fibonacci sequence up to a specific number of terms.
Roman Numeral Converter
Convert between Arabic numbers and Roman numerals.
Binary/Hex Converter
Convert numbers between binary, octal, decimal, and hexadecimal bases.
Age & Date
Calculate your exact live age and perform date math with business day exclusions.
Hijri-Gregorian Converter
Convert dates between Hijri (Islamic) and Gregorian (Western) calendars.
Discount
Calculate discounts, final sale prices, and total shopping savings instantly.
Tip
Calculate standard tips, split diner bills, and round cost shares easily.
Date Difference
Calculate chronological differences, weeks, days, and working business days between dates.
Add/Subtract Days
Add or subtract days, weeks, months, or years to or from any start reference date.
Basic Math
Perform standard addition, subtraction, multiplication, and division operations.
Big Number
Perform arithmetic on extremely large numbers beyond standard computer limits.
Binary
Calculate and convert base-2 binary values with bitwise logic operations.
Confidence Interval
Calculate confidence intervals for population means and proportions.
Distance
Find the 2D and 3D distance between coordinate grid points.
Exponent
Calculate powers and raise bases to any positive or negative exponent.
Factor
Find all factors, prime factorizations, and divisibility of any integer.
GCF
Calculate the Greatest Common Factor (GCF) for a set of numbers.
Half-Life
Project chemical or radioactive decay curves over elapsed time.
Hex
Perform hex calculations and base-16 conversions easily.
LCM
Calculate the Least Common Multiple (LCM) for multiple numbers.
Log
Calculate logarithm values for any custom base or natural log.
Matrix
Solve matrix addition, subtraction, multiplication, determinants, and inverses.
Number Sequence
Identify arithmetic, geometric, or Fibonacci number sequences.
Percent Error
Find absolute and relative percentage error between measured and actual values.
Permutations & Combinations
Solve permutations (nPr) and combinations (nCr) with steps.
Probability
Find single, joint, union, and binomial probability outcomes.
Pythagorean Theorem
Solve right triangle hypotenuse or leg lengths with steps.
Quadratic Formula
Solve quadratic equations ax² + bx + c = 0 for real or complex roots.
Ratio
Simplify multi-part ratios, solve proportions, and divide sums.
Right Triangle
Solve all sides, angles, area, perimeter, and inradius of a right triangle.
Root
Calculate square, cube, or custom nth roots of any number.
Rounding
Round decimal values to significant figures or decimal places.
Sample Size
Calculate sample sizes and margins of error for survey research.
Slope
Find the slope, y-intercept, and equations of a line passing through coordinates.
Descriptive Statistics
Analyze datasets for mean, median, mode, variance, and standard deviation.
Z-Score
Calculate standard scores, normal curve percentiles, and p-values.
Concrete
Estimate the volume and cost of concrete needed for slabs, footings, and steps.
BTU
Calculate the heating and cooling BTU requirements for any room space.
Gravel
Estimate the volume, weight, and cost of gravel needed for landscape projects.
Mulch
Calculate garden bed mulch volume and calculate bags or cubic yards needed.
Roofing Shingles
Calculate roofing squares, bundles, shingles, and costs for roof dimensions.
Stair
Calculate rise, run, stringer length, and step angles for stairs.
Tile
Calculate tiles, box counts, and total costs including waste margins.
Dew Point
Compute dew point temperature and relative humidity thresholds.
Heat Index
Calculate the perceived high-humidity heat index temperatures.
Wind Chill
Calculate apparent cold wind temperatures using meteorological index factors.
Ohm's Law
Solve Voltage, Current, Resistance, or Power equations.
Resistor Color Code
Decode 4-band, 5-band, and 6-band resistor color bands easily.
Voltage Drop
Calculate line voltage drop over electrical conductors.
Molarity
Compute molar concentration, solute masses, or solvent volumes.
Molecular Weight
Determine chemical molecular weights from raw formula strings.
Horsepower
Calculate automotive engine horsepower, displacement, and torque.
Electricity Usage & Cost
Estimate household electrical consumption costs and bills.
Day of the Week
Determine the day of the week for any past or future calendar date.
Hours
Calculate total elapsed hours and minutes between clock times.
Time
Add, subtract, and convert standard time blocks and interval periods.
Time Card & Overtime
Calculate hours worked, timesheet logs, and gross weekly payroll.
Time Duration
Find the duration of days, hours, and minutes between two dates.
Bandwidth & Download Time
Estimate file transfer and download times under connection speeds.
IP Subnet
Compute IPv4 address classes, CIDR subnet masks, and network ranges.
URL Encoder & Decoder
Encode or decode special character sequences for query URLs.
Bra Size & Fitment
Determine correct bra band and cup sizes under modern and traditional systems.
Child & Adult Height
Predict adult height using parental data or standard growth charts.
Golf Handicap Index
Calculate official golf handicap indices from course differentials.
Fuel Cost
Estimate fuel cost, consumption rates, and trip distance budgets.
GDP
Calculate Gross Domestic Product using expenditure and income models.
Gas Mileage & Fuel Economy
Calculate average gas mileage fuel economy (MPG or L/100km).
Tire Size Comparison
Compare dimensional differences in speed, diameter, and width of tires.
Love & Affinity Compatibility
Find relationship compatibility matching percentages using names.
Dice Roller & Probability Simulator
Simulate random N-sided dice throws and roll sequence probabilities.
Scientific Notation
Perform arithmetic on numbers in standard scientific notations.
Asset Depreciation
Generate GAAP & IFRS compliant amortization schedules for your assets.
BMI & Ideal Weight
Calculate BMI, Ideal Body Weight ranges, BMR, and TDEE in one dashboard.
401k
Forecast your 401(k) retirement balance. Calculate employer match limits, track salary raises, adjust for inflation, and simulate vesting schedule...
Age
Calculate your exact age in years, months, weeks, days, hours, and seconds. Find the remaining days until your next birthday and discover your zodiac...
Airbnb Profit
Free Airbnb profit tools. Estimate monthly rental income including nightly rates, occupancy, fees, and expenses. Free & secure.
Amortization Calculator | Loan Payoff Schedule & Table
Calculate your monthly loan payments, view annual & monthly amortization schedules, and check interest savings from making extra payments. Free & secure.
Annuity Accumulation Calculator | Tax-Deferred Growth Solver
Model deferred annuity growth. Compare fixed vs variable contracts, input custom fee structures, track surrender schedules, and analyze tax advantages.
Annuity Payout Calculator | Immediate Income & Tax Solver
Estimate your immediate annuity monthly payouts. Compare Single Life, Joint Life, and Period Certain options with tax exclusion ratio details.
APR
Calculate the true annual percentage rate (APR) of your loan, accounting for interest rate, points, and upfront fees. Compares general loans and mortgages.
Auto Lease Calculator | Calculate Monthly Car Payments
Calculate your monthly car lease payments. Factor in MSRP, capitalized cost, money factor, residual value, fees, and taxes. Free side-by-side lease vs....
Auto Loan
Calculate monthly car loan payments including sales tax, dealer fees, down payment, and vehicle trade-in values. View full amortization schedules.
Average Return Calculator | Arithmetic vs. Geometric CAGR
Compare arithmetic vs. geometric average returns. Calculate historical portfolio compound annual growth rate (CAGR), standard deviation, and volatility...
Boat Loan
Calculate monthly boat loan payments, sales taxes, and dealer fees. Factor in marina slip rent, maintenance, and insurance for a true all-in monthly cost.
Bond
Calculate bond prices or solve for Yield to Maturity (YTM) using numerical bisection. Measure accrued interest, Macaulay/Modified duration, and convexity.
Break-Even
Free break-even tools. Calculate unit volumes and revenue milestones required for business profitability based on fixed and variable costs.
Budget
Audit your monthly cash flow. Compare actual expenses against 50/30/20 targets, validate zero-based allocations, and project compound savings growth.
Business Loan Calculator Free
Free Business Loan tools. Calculate monthly payments and total financing costs for commercial and business loans. View amortization schedule offline.
Car TCO Calculator | Total Cost of Ownership & Depreciation
Calculate the true cost of owning a car over 5 years. Factor in monthly financing, depreciation, fuel, insurance, and maintenance costs instantly.
Cash Back vs. Low Interest Auto Loan
Compare a car dealer
CD Calculator | Yield & Penalty Solver
Calculate Certificate of Deposit growth and APY. Simulate early withdrawal penalties to find net payout and effective yield if you break a CD early.
Closing Costs
Free closing costs tools. Estimate title insurance, attorney fees, appraisal, inspection, and transfer tax when buying or selling a home.
College Cost Calculator | Project Savings & Tuition Gap
Project future college tuition costs based on inflation. Calculate investment growth of your savings and estimate the funding gap with actionable...
Real Estate Commission Calculator | Agent Fees &...
Calculate real estate agent commissions, split allocations, and net seller proceeds. Supports dual agents, flat fees, and custom split parameters.
Compound Interest Calculator Free
Free compound interest tools. See how your money grows over time with daily, monthly, or yearly compounding. Includes contribution schedule.
Credit Card Payoff Calculator | Minimum Payment Trap Solver
Calculate how long it takes to pay off credit card debt. Compare minimum payments vs custom fixed payments and solve for target payoff dates.
Credit Card Payoff Calculator | Debt Snowball vs. Avalanche
Compare Debt Snowball and Debt Avalanche. Calculate your debt-free date, interest savings, and get a month-by-month repayment roadmap.
DCF
Free DCF tools. Calculate company intrinsic value with WACC, terminal value, sensitivity analysis, and multiple growth models for investors.
Debt Consolidation Calculator | Analyze Savings & Fees
Calculate savings by consolidating multiple cards or loans into one personal loan. Model rate drops, origination fees, and monthly cash flow.
Debt Payoff Calculator | Avalanche & Snowball Strategy
Free debt payoff tools. Compare the debt avalanche and debt snowball strategies to find the fastest way to become debt-free. Track your payoff plan.
DTI Ratio Calculator | Front-End & Back-End Debt
Calculate your Front-End and Back-End Debt-to-Income (DTI) ratios. Verify loan eligibility against banking limits and estimate home purchase limits.
Depreciation Calculator Free
Free depreciation tools with Straight Line, Double Declining Balance, MACRS, and Sum-of-Years methods. Includes tax savings estimates for businesses.
Down Payment
Free down payment tools. Plan how much you need to save for a home down payment and estimate monthly PMI thresholds and purchase budget limits.
DSCR
Calculate your commercial property Debt Service Coverage Ratio (DSCR). Determine net operating income (NOI), annual debt service, and bankable loan sizing.
E-commerce Profit & Platform Margin Calculator | Break-Even
Calculate exact e-commerce net profit, margins, and break-even pricing. Supports Stripe, PayPal, Amazon FBA, Shopify Payments, and Cash on Delivery.
Estate Tax Calculator | Project Federal & State Liabilities
Project your estate tax liabilities. Apply federal exclusion limits (2025/2026 sunset), allowable deductions, and state-level estate/inheritance taxes.
FHA Loan Calculator | Estimate FHA Mortgage Payments & MIP
Estimate monthly payments for an FHA loan, including upfront and annual Mortgage Insurance Premiums (MIP), property taxes, and home insurance.
Finance Calculator | Solve PV, FV, PMT, N & Interest Rate
Free online Time Value of Money (TVM) tools. Solve for Present Value, Future Value, Payments, Interest Rate, or Compounding Periods with custom...
Freelancer Rate
Free freelancer rate tools. Calculate what hourly rate you need to charge based on your desired income, business expenses, and billable hours.
Future Value Calculator Free
Free Future Value tools. Calculate FV of present lump sums, regular savings annuities, and growing investments with customized compounding offline.
Graphing Calculator Online
Plot mathematical functions with our free online graphing tools. Supports explicit, implicit, parametric, and polar equations. Find roots,...
Heart Rate Zones Calculator Free
Free Heart Rate Zones tools. Calculate Zone 1-5 training zones using Karvonen method, Tanaka equation, and Gellish formulas for optimal cardio and...
HELOC Calculator | Home Equity Line of Credit Estimator
Calculate interest-only payments during the HELOC draw phase, principal + interest payments during the repayment phase, and check borrowing limits.
HOA Fee
Free HOA fee tools. Estimate how monthly homeowners association dues affect your purchasing power, total debt-to-income limits, and monthly payments.
Home Affordability Calculator Free
Free home affordability tools. Find how much house you can afford based on income, debts, down payment, and interest rate. Includes DTI ratio.
Home Equity Loan Calculator | Estimate Second...
Estimate monthly payments and loan terms for a home equity second mortgage. Calculate debt limits and CLTV ratios based on your home value.
House Flip Calculator Free
Free house flip tools. Estimate profit from buying, renovating, and selling property. Includes purchase, repair, holding, and selling costs.
Income Tax Calculator | Estimate Progressive Tax Brackets
Estimate your federal income tax liability. Compare standard vs. itemized deductions, model pre-tax savings, and analyze marginal vs. effective tax rates.
Inflation
Free inflation tools. Calculate the future value of your money and see how inflation erodes your purchasing power over time.
Interest Calculator | Compound Interest & Tax Drag Solver
Calculate compound interest on your investments. Adjust compounding frequencies from daily to continuous, and simulate the impact of inflation and tax...
Interest Rate Calculator | Nominal, APY & APR Converter
Convert between nominal annual percentage rate (APR) and effective annual percentage yield (APY) under variable compounding frequencies.
Investment & Compound Interest Calculator | Growth...
Project your future portfolio value. Model compound interest, recurring contributions, and the impact of annual tax drag on taxable vs tax-advantaged...
Investment Property
Analyze potential returns on real estate investments. Calculate cash-on-cash return, Cap Rates, operating expenses, and multi-year appreciation forecasts.
Investment Return
Free investment return tools. Estimate your future portfolio return under conservative, moderate, and aggressive scenarios. Adjust for inflation.
Traditional IRA Calculator | Solve Deductibility &...
Estimate your Traditional IRA growth. Calculate tax-deductibility limits, track non-deductible basis, and project tax liabilities upon retirement...
IRR & NPV Calculator | Internal Rate of Return Solver
Free capital budgeting tools. Solve NPV and IRR for irregular cash flows with the Secant numerical method. Interactive NPV sensitivity profile chart.
Land Area
Free land area tools. Draw your plot on a map and calculate the area instantly. Supports irregular shapes. Results in sq ft, sq m, acres,...
Lease vs. Buy Calculator | Equipment Leasing NPV Solver
Evaluate equipment leasing vs. purchasing options. Calculate lease payments, loan amortization, corporate tax shields, and Net Present Value (NPV)...
Loan
Free loan tools for personal, auto, student, and business loans. Calculate monthly payments, total interest, and view amortization schedule.
Loan Comparison Calculator Free
Free loan comparison tools. Compare 2-4 loan offers side by side with APR, monthly payments, total interest, and break-even analysis.
Margin Calculator | Solve Markup, Cost & Retail Price
Solve for revenue, COGS, gross profit, margin, and markup in real-time. Calculate discounts, sales tax, and VAT margins for retail and e-commerce.
Markup
Free markup tools. Price your products based on item cost and desired markup percentage. Calculate gross margins and profits.
Marriage Tax Penalty & Bonus Calculator | File...
Evaluate the tax impact of marriage. Calculate marriage penalties or bonuses by comparing Married Filing Jointly vs. Married Filing Separately tax rates.
Mortgage
Free mortgage tools. Calculate monthly payments, total interest, and amortization. Includes property tax, insurance, and PMI. Works for any country.
Mortgage Payoff Calculator | Estimate Early Payoff Savings
Calculate how much time and interest you can save by making extra principal payments on your mortgage. Models biweekly schedules and recurring extra...
Mortgage Points
Free mortgage points tools. Calculate whether buying discount points is worth it. See your break-even point, monthly savings, and total savings...
Mutual Fund Fee Calculator | Expense Ratio & Load Fee Drag
Calculate how mutual fund expense ratios, front-end loads, and redemption fees erode your returns. Discover your total fees and lost opportunity costs.
Net Worth
Free net worth tools. Calculate your total assets and liabilities to find your net worth. Understand your debt-to-asset ratio.
One Rep Max Calculator Free
Free One Rep Max (1RM) tools. Calculate max lift for squats, bench press, and deadlifts using Epley, Brzycki, Lander, and Lombardi equations offline.
Payback Period Calculator | Standard & Discounted Solver
Calculate standard and discounted payback periods for project cash flows. Step-by-step cumulative ledger, and interactive break-even charts.
Loan Payment & Amortization Calculator with Extra Payments
Calculate monthly loan payments, view complete amortization schedules, and simulate how extra payments or lump sums shorten your loan term and save...
Pension Calculator | Defined Benefit & Payout Estimator
Calculate your defined benefit pension payout based on service years, salary, and accrual rate. Factor in early retirement, COLA, and survivor benefits.
Personal Loan Calculator Free
Free Personal Loan tools. Estimate monthly repayments, total interest, and amortization schedule for personal loans. Plan budget and check savings...
Pregnancy
Calculate your due date, current week, and trimester. Get week-by-week baby development updates, health tips, and pregnancy milestones. Free, accurate,...
Present Value Calculator | PV & Discounted Cash Flow Solver
Find the present value (PV) of future cash streams. Model lump sums, annuities, perpetuities, and growing cash flows under variable compounding...
Profit Margin
Free profit margin tools. Calculate gross profit, gross margin percentage, and markup percentage from revenue and cost of goods sold.
Progressive Tax Calculator Free
Calculate your exact net salary using progressive tax brackets for US, UK, Egypt, Saudi, UAE, Canada, Germany and more. Includes all deductions.
Property Tax Calculator Free
Free property tax tools. Estimate annual property tax for any address based on assessed value and local tax rate. US counties, UK, international...
Refinance
Free Refinance tools. Calculate your mortgage refinance savings. Compare current loan with new rates, estimate monthly payments, and see how much interest you can save.
Rent Affordability
Free rent affordability tools. Find max rent based on income using 30% rule and 50/30/20 budget. Includes utilities estimate.
Rent
Free Rent tools. Estimate how much rent you can afford based on income and expenses. Get personalized budget breakdown for ideal apartment search.
Rent vs Buy
Free rent vs buy tools. Compare net financial cost of renting vs home ownership over holding period including equity, taxes, and maintenance.
Rental Property
Free Rental Property tools. Analyze the profitability of your rental properties. Calculate ROI, cash flow, cap rate, and operating expenses instantly.
Rental Yield Calculator Free
Free rental yield tools. Calculate gross and net rental yield for any property with expenses, vacancy rate, and annual return analysis.
Repayment Calculator | Loan Payoff Goal Solver
Solve for extra monthly payments or one-time lump sums required to achieve a target payoff date or shorten your loan term. Side-by-side accelerated...
Retirement
Free Retirement tools. Estimate your retirement savings. Get personalized timeline and investment goals to secure your financial future completely offline.
RMD
Free RMD tools. Calculate Required Minimum Distributions. Plan IRA withdrawals and avoid IRS penalties with our secure, offline tools.
ROI
Free ROI tools. Calculate simple return on investment and compound annualized return rate (CAGR) for any project or financial asset.
Roth IRA Calculator | Solve Limits & Tax-Free Growth
Estimate your Roth IRA growth. Calculate contribution limits based on filing status and MAGI, and compare tax-free compounding against taxable...
Running Pace Calculator Free
Free Running Pace tools. Calculate pace, finish time, race predictions, splits, and training zones. Includes VDOT and plans for all distances.
Salary
Free Salary tools. Convert hourly wage to annual salary instantly. Compare pay rates and estimate weekly, monthly, and yearly earnings securely.
Sales Tax Calculator | Forward & Reverse Tax Solver
Calculate sales tax totals forward, or back-solve the pre-tax price from your final receipt. Breakdown tax splits into state, county, city, and district.
Savings Goal Calculator | Plan & Solve Savings Targets
Forecast your savings growth or calculate the exact monthly deposits and time required to reach your target savings goal with interest compounding.
Savings Goal
Free Savings Goal tools. Calculate time needed to reach savings goals. Plan monthly deposits and interest compounding with 100% offline privacy.
Simple Interest Calculator Free
Free simple interest tools using I=Prt formula. Solve for Interest, Principal, Rate, or Time. Supports Banker
Sleep Calculator Free
Free Sleep tools. Calculate optimal bedtime or wake-up time based on 90-minute sleep cycles. Personalized for age, activity, and stress. Wake up...
Social Security
Free Social Security tools. Estimate your future social security benefits. Plan retirement age and maximize lifetime payouts securely offline.
Square Footage
Free square footage tools. Calculate the area of any room, house, or land plot. Supports L-shaped rooms, multiple rooms, and irregular shapes....
Student Loan
Estimate student loan repayments under various interest rates and terms. Compare amortization schedules and calculate payoff periods.
Subscription Opportunity
Free Subscription Opportunity tools. Calculate the true cost of subscriptions. See how much wealth you lose to monthly fees completely offline.
Take-Home Paycheck
Free Take-Home Paycheck tools. Calculate your net take-home pay after taxes. Estimate paycheck deductions and federal taxes completely offline.
TVM Calculator Free
Free TVM tools. Solve for any of the 5 Time Value of Money variables: PV, FV, PMT, N, or I/Y with amortization schedules and examples.
Va Mortgage Calculator Free
Estimate your VA home loan monthly payments. Calculate funding fees, property taxes, and insurance specifically tailored for veterans.
Vat Calculator Free
Easily calculate Value Added Tax (VAT) for your business transactions. Add or remove VAT from any price instantly with our free online tool.
Water Intake Calculator Free
Free Water Intake tools. Calculate daily hydration based on weight, age, activity, climate, and health. Includes 12-slot hydration schedule and...
Why Use Our Online Calculators?
Mathematics and scientific equations can be complex, and carrying a dedicated physical calculator is not always practical. Our suite of free online calculators provides you with immediate, high-precision tools directly in your browser. Whether you need to solve complex trigonometric functions on the Scientific Calculator, simplify equations using the Fraction Calculator, or find the Standard Deviation of a dataset, we have you covered.
Scientific and Math Calculators
Solve advanced calculus, geometry, matrix arithmetic, algebra, and basic fractions instantly with high-precision outputs.
Date and Age Calculators
Find your chronological age down to the second or add and subtract calendar offsets with options to exclude weekends.
Finance and Wealth Planners
Plan your future with calculators for 401k employer matches, mortgages, leases, auto loans, and personal budget metrics.
Privacy-First Processing
Many online calculators send your equations to a backend server. We process all calculation logic locally on your device.
Frequently Asked Questions About Our Calculators
Are all calculators on this page free?
Yes. Every calculator is free with no registration, subscriptions, or usage limits.
Is my calculation data private?
Absolutely. All calculations happen entirely in your browser using Client-Side JavaScript. We never store, log, or transmit your numbers to any server.
What types of calculators are available?
We offer a wide range of math, date, and finance calculators, including scientific calculators, fraction calculators, age calculators, and budget planners.
Do these work offline?
Yes. Once the page is loaded, the tools run entirely on your device and do not require an active internet connection to perform math operations.
Can I use these calculators on mobile devices?
Yes. All CanvaTools calculators are fully responsive and work seamlessly on smartphones, tablets, and desktops. No app download required — just open the page in your mobile browser.
How accurate are the calculator results?
Our calculators use standard mathematical formulas and JavaScript's high-precision arithmetic. Results are accurate to the limits of IEEE 754 floating-point precision, suitable for educational, professional, and personal use.
Can I embed CanvaTools calculators on my website?
Currently, CanvaTools calculators are designed for direct use on our platform. We do not offer embed codes or iframe integration at this time. For custom calculator needs, please contact our team. You can always link to specific calculator pages from your site.
How do I suggest a new calculator or feature?
We welcome suggestions! Use the 'Contact' link in the footer with your calculator idea. Include the use case, formulas, and any reference materials. Popular requests are added to our development roadmap.
Try our free calculators today and experience instant, private, and accurate mathematical computation right in your browser.