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Popular calculators

The fastest path to the most-requested tools — from mortgage planning to figuring out tonight's tip.

Top picks

Amortization Calculator

Full payoff schedule with principal vs interest, charts, extra payments, and PDF/CSV export.

Mortgage Payment Calculator

Monthly payment with taxes, insurance, HOA and PMI — the true cost of homeownership.

Mortgage Calculator

Estimate monthly mortgage payments, interest and amortization schedules.

Loan Calculator

Calculate monthly payments and total interest for any personal loan.

Investment Calculator

Project portfolio growth with contributions, returns and time.

Retirement Calculator

See if you're on track to retire comfortably with custom assumptions.

Scientific Calculator

Trig, logs, exponents and constants for advanced math.

Percentage Calculator

Find percentages, increases, decreases and discounts instantly.

Unit Conversion

Convert length, mass, temperature, volume and more.

BMI Calculator

Calculate body mass index from height and weight.

Calorie Calculator

Estimate daily calorie needs based on activity and goals.

Salary Calculator

Convert hourly, weekly, monthly and annual pay rates.

Tip Calculator

Split a check and calculate tips for any party size.

Also worth exploring

Refinance Calculator

See break-even months and lifetime savings from refinancing your mortgage.

Affordability Calculator

How much house you can really afford based on income, debts and down payment.

Rent vs Buy Calculator

Decide whether renting or buying wins financially over your time horizon.

Biweekly Payment Calculator

See how biweekly mortgage payments cut years off your loan.

Extra Payment Payoff

Calculate exactly how much faster — and cheaper — extra principal makes your loan.

Interest Calculator

Compare simple vs compound interest over any time horizon.

Budget Calculator

Build a monthly budget across income, expenses and savings goals.

Credit Card Payoff

Plan a debt payoff schedule and minimize interest paid.

Savings Calculator

Forecast how your savings grow with regular deposits.

ROI Calculator

Measure return on investment for any project or asset.

Tax Calculator

Estimate federal income tax based on filing status and income.

Basic Calculator

Add, subtract, multiply and divide with a clean keypad.