Calculator

20 free online tools available in this category.

Age Calculator

Calculate exact age in years, months, and days from a birthdate.

Calculate Body Mass Index from height and weight.

Estimate daily calorie needs based on your stats and activity level.

Add or subtract days, months, and years from any date.

Calculate the number of days between two dates.

Embed and use the Desmos graphing calculator.

Calculate monthly loan EMI (Equated Monthly Installment).

Calculate your weighted grade average and GPA.

Calculate Instagram engagement rate and metrics.

Calculate simple or compound interest on any principal.

Calculate loan repayments, interest, and total cost.

Calculate monthly mortgage payments and amortization.

Calculate gross and net pay from hourly or salary rates.

Calculate installment payment amounts for any loan.

Calculate percentages, increases, decreases, and ratios.

Convert annual salary to hourly, weekly, or monthly pay.

Estimate the probability of a snow day based on conditions.

Calculate income tax and take-home pay.

Add or subtract hours, minutes, and seconds.

Convert weight between kg, lbs, oz, and other units.