Calculators

Board feet and lumber cost. Free, instant, in your browser.

Work out the monthly payment and total interest on a boat loan. Free, in your browser, no sign-up.

Enter a few tape-measure circumferences to estimate body fat percentage using the US Navy method.

Find your body shape (hourglass, pear, inverted triangle, apple or rectangle) from bust, waist and hip measurements, with your waist-to-hip ratio. Free, in your browser, no sign-up.

BSA by Mosteller, DuBois and Haycock. Free, instant, in your browser.

Find your bra size from an underbust and a bust measurement, in inches or centimeters, with the US and UK cup and two sister sizes. Free, in your browser, no sign-up.

Find how many units you must sell to cover fixed and variable costs. Free, in your browser, no sign-up.

Bricks and mortar for a wall. Free, instant, in your browser.

Air conditioner size for a room. Free, instant, in your browser.

Add up your monthly spending, see what is left over, and compare it with the 50/30/20 budgeting rule. Free, in your browser, no sign-up.

Calculate the monthly payment and total interest on a business loan, and the real APR once the origination fee is taken out of the money you receive. Free, in your browser, no sign-up.

Calculate the compound annual growth rate between a beginning and ending value over any number of years. Free, in your browser, no sign-up.

Estimate your daily calorie needs from your body stats and activity level. Free, in your browser, no sign-up.

Find your target daily calories and estimated weekly weight loss from a deficit. Free, in your browser, no sign-up.

Calories burned by activity, time and weight. Free, instant, in your browser.

Estimate what a car is worth after a number of years, with a steeper first-year drop and a steady yearly loss after that. Free, in your browser, no sign-up.

Calculate a monthly car lease payment from the price, residual value, money factor, term and sales tax. Free, in your browser, no sign-up.

Work out the monthly payment on a car loan including sales tax, down payment and trade-in, plus the total interest and total cost. Free, in your browser, no sign-up.

See when your car loan will be paid off and how many months and dollars of interest an extra monthly payment saves. Free, in your browser, no sign-up.

Estimate a monthly car payment from price, down payment, rate, and term. Free, in your browser, no sign-up.

Cat years to human years. Free, instant, in your browser.

Shipping cubic meters and container fill. Free, instant, in your browser.

Calculate what a certificate of deposit earns from the deposit, APY and term. Free, in your browser, no sign-up.

Goodness of fit and test of independence. Free, instant, in your browser.