Calculators
Finance, health and everyday calculators with clear explanations of how the numbers work.
Finance
- Mortgage Calculator Estimate your monthly mortgage payment including property tax, insurance, PMI and HOA fees, and see how extra payments shorten your loan.
- Loan Calculator Work out the monthly payment, total interest and total cost of any fixed-rate loan: personal loans, student loans and more.
- Auto Loan Calculator See your monthly car payment including sales tax, fees, your down payment and trade-in value.
- Compound Interest Calculator See how your savings or investments grow over time with compound interest and regular monthly contributions.
- Savings Goal Calculator Find out how much you need to save every month to reach a goal by a certain date, including interest.
- Salary to Hourly Calculator Convert between hourly, daily, weekly, monthly and yearly pay based on your actual working hours.
- Retirement Calculator See how much you could have at retirement, how long it will last, and how much you need to save each month.
- Credit Card Payoff Calculator Find out how long it takes to pay off a credit card balance, how much interest you will pay, and what payment clears it by a target date.
- Debt Payoff Calculator Plan how to pay off several debts and compare the snowball and avalanche methods side by side.
- Inflation Calculator See what money will be worth in the future, or what past prices equal today, at any inflation rate.
- ROI Calculator Calculate the return on an investment, the gain or loss, and the annualized return (CAGR) over any period.
- Sales Tax & VAT Calculator Add sales tax or VAT to a price, or work out the price before tax from a total that already includes it.
- Currency Converter Convert between 30 major currencies using daily reference exchange rates from the European Central Bank.
Health
- BMI Calculator Calculate your body mass index in kilograms and centimeters or pounds and inches, and see your healthy weight range.
- Calorie Calculator Estimate how many calories you burn each day and how many to eat to maintain, lose or gain weight.
- Body Fat Calculator Estimate your body fat percentage from a few tape-measure measurements using the US Navy method.
- Pregnancy Due Date Calculator Estimate your baby's due date from the first day of your last period, and see how far along you are.
Everyday
- Percentage Calculator Solve every common percentage problem: X% of a number, what percent one number is of another, and percentage increase or decrease.
- Age Calculator Find your exact age in years, months and days, plus total days lived and the countdown to your next birthday.
- Days Between Dates Calculator Count the days between two dates, including weeks, months and the number of working days.
- Unit Converter Convert between metric and imperial units for length, weight, temperature, volume, area and speed.
- Tip Calculator Work out the tip and the total, and split the bill evenly between any number of people.
- GPA Calculator Calculate your semester or cumulative GPA on the 4.0 scale from your letter grades and credit hours.
- Discount Calculator Work out the sale price and how much you save, including stacked discounts such as 30% off plus an extra 10%, and sales tax.
- Time Zone Converter Convert a date and time between any two time zones, with daylight saving time handled automatically and a world clock for major cities.
- Hours Calculator Calculate the hours and minutes between two times, subtract breaks, handle overnight shifts and work out pay from an hourly rate.
- Fuel Cost Calculator Estimate the fuel cost of a trip from the distance, your car’s fuel consumption and the fuel price, and split it between passengers.
- Stopwatch & Timer A stopwatch with lap times and a countdown timer with an alarm. Keeps time even when you switch tabs.
Math
- Scientific Calculator A full scientific calculator with trigonometry, logarithms, powers, roots, memory and calculation history.
- Random Number Generator Generate random numbers in any range, pick random names from a list, or shuffle a list, fairly and instantly.
- Roman Numeral Converter Convert numbers to Roman numerals and Roman numerals back to numbers, with a step-by-step breakdown.