Fast, accurate calculators for salary, tax, and budgeting decisions.
Six calculators in one — percent of, what percent, percentage change, increase or decrease, find the whole, and the original value.
Calculate your tip and split the bill between friends — instant results, no ads, no sign-up.
Calculate your Body Mass Index in metric or imperial units — instant results with a category breakdown.
Stack discounts, add tax, find the percent off between two prices, or reverse a sale price.
Convert between major world currencies — instant estimates, no sign-up, no tracking.
Calculate your exact age in years, months, and days from your date of birth — instant results, no sign-up.
Convert between length, weight, and temperature units instantly and accurately.
Estimate your monthly mortgage payment — principal, interest, tax, and insurance — instant results, no sign-up.
Calculate your monthly loan payment, total interest, and total repayment — instantly and privately.
Estimate your net pay per paycheck using 2026 US federal tax brackets, FICA, 401(k), benefits and a state rate you choose.
Convert salary to hourly pay and back, with paid time off, holidays and overtime built in.
Calculate the exact time between two dates — days, weeks, months, and business days, instantly.
Add sales tax to a price or work backwards from a total, with quantity and a discount before tax.
Calculate unweighted and weighted GPA, combine it with your previous GPA, and see what you need next term.
Project your investment growth with monthly contributions — instant results, no sign-up.
Estimate your body fat percentage using simple body measurements — instant results, no sign-up.
Calculate the future value of your investment with compound interest — instantly and privately.
Calculate simple interest and see it year by year.
Calculate a scaled width or height that preserves your original aspect ratio.