Free online calculators

Everyday math, personal finance, and health — each one runs instantly in your browser. No sign-up, no waiting.

15 free tools

Everyday

6

Age CalculatorExact age in years, months, and days from a birth date.Days Between DatesDays, weeks, and weekdays between two dates.Countdown CalculatorLive countdown to any future date and time.Percentage CalculatorPercent of a number, percent change, and reverse percentages.Tip CalculatorTip amount and per-person split for any bill.Time CalculatorAdd or subtract hours, minutes, and seconds.

Finance

4

Mortgage CalculatorMonthly payment, total interest, and payoff for a home loan.Loan CalculatorMonthly payment and total interest on any loan.Compound Interest CalculatorFuture value of savings or investments over time.Salary CalculatorConvert hourly pay to yearly salary, or the reverse.

Health

5

BMI CalculatorBody mass index and weight category from height and weight.Calorie CalculatorDaily calorie needs for maintaining, losing, or gaining weight.Macro CalculatorDaily protein, carb, and fat targets for your goal.Body Fat CalculatorEstimate body fat percentage with the US Navy method.Pregnancy Due Date CalculatorEstimated due date and current week from your last period.

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