Free online calculators

A full scientific calculator — trig, logs, powers, and roots.

Work out percentages, ratios, and percentage change.

Find the mean, median, mode, and range of any numbers.

Calculate the tip and split a bill between people.

Find the sale price and how much you save.

Add or remove sales tax from any price.

Add or remove GST, VAT, or sales tax from a price.

Estimate monthly loan payments, interest, and total cost.

Estimate your monthly payment, taxes, insurance, and total cost.

Convert pay between hourly, weekly, monthly, and yearly.

See how savings grow over time.

Calculate your Body Mass Index in metric or imperial.

Estimate daily calories from BMR and activity.

Estimate your daily calories (TDEE).

Find a healthy weight range for your height.

Add, subtract, multiply, and divide fractions.

Calculate your GPA on a 4.0 scale.

Find the score you need on the final to hit your target grade.

Resize dimensions while keeping the same ratio.

Calculate exact age in years, months, and days.

Count the days, weeks, and months between two dates.

Estimate your pregnancy due date and how far along you are.

Add or subtract hours, minutes, and seconds.