Browse our complete collection of free online calculators
Perform basic arithmetic operations like addition, subtraction, multiplication, and division with decimal support.
Calculate percentages, percentage increase/decrease, and find what percentage one number is of another.
Calculate your exact age in years, months, and days from your birth date.
Calculate your Body Mass Index (BMI) and find out your health category based on height and weight.
Calculate monthly loan payments, total payment amount, and total interest based on loan amount, interest rate, and term.
Calculate monthly mortgage payments including principal, interest, taxes, insurance, and HOA with a full amortization schedule.
Convert between units of length, weight, temperature, volume, area, and speed instantly.
Calculate tips and split bills evenly among any number of people with preset and custom tip percentages.
Calculate sales tax on purchases, reverse-calculate pre-tax prices, and handle multiple quantities.
Calculate your daily calorie needs (BMR and TDEE) based on age, sex, height, weight, and activity level.
Convert between 17 popular world currencies with approximate exchange rates for quick reference.
Calculate your weighted or unweighted GPA by entering course grades and credit hours. Supports 4.0, 5.0, and percentage scales.
Calculate the area of any room or space in square feet. Supports rectangular, triangular, and circular shapes with unit conversions.
Calculate how much you save with any percentage discount. See the sale price, savings amount, and compare stacked discounts.
Estimate how much you need to save for retirement based on your age, income, savings rate, and expected returns.
Find out how long it will take to pay off your debt. Compare snowball vs avalanche methods and see total interest saved.
Calculate speed, distance, or time given any two of the three variables. Supports multiple units for each measurement.
Add, subtract, multiply, and divide fractions with step-by-step simplification. Handles mixed numbers and improper fractions.
Estimate calories burned during exercise based on your weight, activity type, and duration using standard MET values.
