Calculators
Free, instant calculators that run entirely in your browser — no sign-up, nothing sent to a server.
Health
Everyday
- Tip CalculatorAdd a tip to a restaurant bill and split the total evenly between any number of people.
- Discount CalculatorFind the sale price and how much you save when a percentage is taken off the original price.
- Date Difference & Age CalculatorFind the time between two dates — in years, months, and days, plus the total days and weeks. Doubles as an age calculator: enter a birth date and today.
- Unit Price Comparison CalculatorCompare two package sizes or prices to see which is the better deal per unit — the classic 'is the bigger box actually cheaper?' check.
Math
Finance
- Loan & Mortgage CalculatorWork out the monthly payment on a loan or mortgage, plus the total interest, total paid, and a full year-by-year amortization schedule.
- Salary & Pay-Rate ConverterConvert any pay rate between hourly, daily, weekly, bi-weekly, monthly, and yearly — in both directions — with optional take-home pay and a multi-year projection.