The number you need, in seconds.
Free calculators for your money, your health and your home. Type your numbers, get the answer, and see exactly how it was worked out. No sign-up, nothing to download.
Financial calculators
Work out monthly payments, total interest and payoff dates before you sign. Every calculator shows a full payment schedule.
- Mortgage calculator
Monthly payment with property tax, insurance, PMI and HOA.
- Loan calculator
Monthly payment, total interest and how much extra payments save.
- Auto loan calculator
Car payment with trade-in, down payment, sales tax and fees.
Fitness and health calculators
Quick estimates based on published formulas, with the formula and its limits explained. They are a starting point, not a diagnosis.
- BMI calculator
Body mass index and the healthy weight range for your height.
- Calorie calculator
Calories a day to maintain, lose or gain weight.
- Body fat calculator
Body fat percentage from a few tape measurements.
Home and DIY calculators
Work out how much material to buy before you head to the store. Each calculator shows the formula and adds sensible extra for waste.
- Concrete calculator
Cubic yards, bags and cost for slabs, footings and post holes.
- Paint calculator
Gallons or litres of paint for a room or a wall.
- Flooring calculator
Square footage, boxes and cost of flooring.