Fast, focused calculations
Calculators
Free online calculators for BMI, age, tip, and mortgage. Instant math in your browser with no sign-up required. Free to use on desktop or phone.
12 tools availableAvailable tools
BMI Calculator
Estimate adult body mass index and a healthy-weight range using metric or imperial measurements.
Open toolAge Calculator
Find calendar age in years, months, and days for a selected date.
Open toolDate-Difference Calculator
Measure the calendar and elapsed-time difference between any two dates.
Open toolEMI Calculator
Estimate monthly loan payments, total repayment, interest, and yearly balances.
Open toolPercentage Calculator
Free percentage calculator for X% of Y, reverse percent, and percent change. Instant results, no sign-up.
Open toolTip Calculator
Free tip calculator for US bills. Set tip percent, split the check, and see tip, total, and per-person amounts.
Open toolDiscount Calculator
Free discount calculator for sale price, savings, and optional US sales tax on the discounted total.
Open toolMortgage Calculator
Free mortgage calculator for US fixed-rate principal and interest, plus optional taxes, insurance, and PMI.
Open toolDays Between Dates
Free days between dates calculator for calendar days, years/months/days, business days, and days until a future date.
Open toolLoan Calculator
Free loan calculator for US car, personal, and student loans. See monthly payment, total interest, and total cost.
Open toolPaycheck Calculator
Free paycheck calculator for US salary or hourly pay. Estimate per-paycheck take-home after 2026 federal tax, FICA, and state tax.
Open toolGPA Calculator
Free GPA calculator on the US 4.0 scale. Add courses, credits, and letter grades for a weighted GPA.
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