FinanceAvailable now
Mortgage Calculator
Estimate fixed-rate mortgage payments, total housing cost, and amortization for the United States and Canada.
United States + Canada
Open calculatorCalculator directory
All Calculators: Finance, Tax, Health & Everyday Tools
Browse all of our free online calculator tools in one place. Jump to a category below, then open a calculator to see clear inputs, results and the method behind them. Planned tools are shown as 'Coming soon' and are not linked until they are ready.
13 calculators available now
Finance
Finance Calculators
Mortgage, car loan, savings and debt calculators for major household decisions.
FinanceAvailable now
Auto Loan / Car Payment Calculator
Estimate monthly car payments, total interest, trade-in equity, taxes, and fees for US or Canadian vehicle financing.
United States + Canada estimates
Open calculatorFinanceAvailable now
Compound Interest Calculator
Estimate future value, contributions, and interest earned from compound growth assumptions.
Neutral currency estimate
Open calculatorFinanceAvailable now
Credit Card Payoff Calculator
Estimate payoff timelines and interest costs for credit card debt.
Fixed-payment monthly interest approximation
Open calculatorFinanceAvailable now
Debt-to-Income Ratio Calculator
Estimate front-end and back-end DTI from gross income, housing costs, and recurring monthly debt payments.
Gross-income educational estimate
Open calculatorFinanceComing soon
Rent vs Buy Calculator
Compare renting and buying assumptions side by side.
Planned tool
FinanceAvailable now
Loan Calculator
Estimate fixed-rate installment payments, total interest, withheld origination fees, and monthly amortization in USD.
USD; stated nominal interest rate, not disclosure APR
Open calculatorFinanceAvailable now
401(k) Retirement Calculator
Project 401k retirement savings with employee contributions, employer matching, investment returns, and fees.
United States; USD; 2026 limits with explicit future assumptions
Open calculatorFinanceAvailable now
APR Calculator
Estimate fixed-rate installment loan APR with withheld or financed qualifying upfront finance charges.
United States; USD; regular monthly estimate, not a certified disclosure
Open calculatorTax & Income
Tax & Income Calculators
Estimate take-home pay and 2026 US federal income tax, or add and remove sales tax, GST and HST.
Tax & IncomeAvailable now
Salary / Take-Home Pay Calculator
Estimate 2026 United States federal take-home pay from salary, hourly, or per-pay income.
United States federal only
Open calculatorTax & IncomeAvailable now
Income Tax Calculator
Estimate 2026 United States federal income tax from ordinary income, deductions, credits, and withholding.
United States federal only
Open calculatorTax & IncomeAvailable now
Sales Tax / GST-HST Calculator
Add or remove sales tax using a user-entered rate for US sales tax, reverse tax, reverse sales tax, and Canadian GST, HST, PST, QST, and combined tax estimates.
United States + Canada user-entered rate
Open calculatorHealth & Lifestyle
Health & Lifestyle Calculators
Measurement-based tools with clear instructions and fit or health caveats.
Health & LifestyleAvailable now
Bra Size Calculator
Estimate a measurement-based starting bra size across common regional sizing labels.
US, UK, EU, FR, AU/NZ labels
Open calculatorEverydayAvailable now
Age Calculator
Calculate how old someone is from a date of birth, with exact age in years, months, days, total elapsed days, and next birthday timing.
Date-only calendar calculation
Open calculatorGuides to Help You Use These Calculators
Want to understand the numbers behind the tools? Browse our calculator guides, starting with the 2026 federal tax brackets guide.