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Free Online Calculators

Free online calculators: percentage, BMI, mortgage, savings, tip, age, compound interest, loan, date, calorie, GPA, average, time, fuel cost, retirement. No login required.

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Percentage Calculator

Calculate percentages instantly — percent of a number, percent change, discounts...

Calculate your Body Mass Index (BMI) with metric or imperial units and see your ...

Mortgage Calculator

Calculate monthly mortgage payments, total interest paid, and see a full amortiz...

Savings Calculator

Calculate how much your savings will grow with compound interest, regular deposi...

Calculate tip amount, total bill, and split the check between multiple people in...

Calculate exact age in years, months, and days. Find total days lived and days u...

Compound Interest Calculator

Calculate compound interest growth over time. See how your investment grows with...

Loan Calculator

Calculate monthly loan payments, total cost, and total interest for any loan amo...

Date Calculator

Calculate the number of days, weeks, months, or years between two dates. Also ad...

Calorie Calculator

Calculate your daily calorie needs (TDEE) based on age, weight, height, and acti...

Calculate your GPA (Grade Point Average) on a 4.0 scale. Enter courses with lett...

Average Calculator

Calculate mean, median, mode, standard deviation, min, max, and range from a lis...

Time Calculator

Add or subtract time durations. Convert between hours, minutes, and seconds. Cal...

Fuel Cost Calculator

Calculate fuel cost for any trip. Enter distance, fuel efficiency (MPG or L/100k...

Retirement Calculator

Plan your retirement. Calculate projected savings at retirement age based on cur...

Ovulation Calculator

Find your fertile window and most likely ovulation date. Enter your last period ...

Pregnancy Due Date Calculator

Calculate your pregnancy due date from your last menstrual period (LMP). See you...

Sleep Calculator

Calculate the best time to wake up or go to sleep based on 90-minute sleep cycle...

Body Fat Calculator

Calculate your body fat percentage using the US Navy method. Enter height, neck,...

Paycheck Calculator

Calculate your take-home pay after federal income tax, Social Security (6.2%), a...

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