Calculators
Free online calculators. Finance, math, and unit calculators — fast, free, and instant.
Age Calculator
Calculate your exact age in years, months, and days. Find out how many days you have lived and when your next birthday is.
Open tool →Average Calculator
Calculate the average, median, sum, min, and max of a list of numbers. Enter one number per line for instant statistics.
Open tool →BMI Calculator
Calculate your Body Mass Index (BMI) in metric or imperial units. Includes BMI category and healthy weight range for your height.
Open tool →BMR Calculator
Calculate your Basal Metabolic Rate (BMR) and Total Daily Energy Expenditure (TDEE) using the Mifflin-St Jeor formula.
Open tool →Body Fat Calculator
Estimate your body fat percentage using the US Navy method. Enter neck, waist (and hips for females), and height measurements in centimeters.
Open tool →Calorie Calculator
Calculate your daily calorie needs for weight loss, maintenance, and weight gain based on your age, height, weight, sex, and activity level.
Open tool →Countdown Timer
Set a target date and time and watch the live countdown in days, hours, minutes, and seconds. Perfect for events, launches, and deadlines.
Open tool →Date Difference Calculator
Calculate the difference between two dates in years, months, days, hours, minutes, and seconds. Perfect for project timelines and event planning.
Open tool →Discount Calculator
Calculate the sale price after a discount, or work backwards from a final price and savings amount to find the original price and discount percentage.
Open tool →Fraction Calculator
Add, subtract, multiply, or divide two fractions. Results are automatically simplified and shown as both a fraction and a decimal.
Open tool →GPA Calculator
Calculate your GPA on a 4.0 scale. Enter your courses, letter grades, and credit hours to get your weighted grade point average.
Open tool →Grade Calculator
Calculate your grade as a percentage and letter grade. Supports both points-based and weighted grading systems.
Open tool →Hourly to Yearly Salary Calculator
Convert an hourly wage to yearly, monthly, bi-weekly, weekly, and daily salary. Set custom hours per week and weeks per year.
Open tool →Ideal Weight Calculator
Calculate your ideal body weight using four medical formulas: Devine, Robinson, Miller, and Hamwi. Supports metric and imperial units.
Open tool →Percentage Calculator
Calculate percentages easily with three modes: find what X% of Y is, find what percentage X is of Y, or find the total when X is Y% of it.
Open tool →Percentage Decrease Calculator
Calculate the percentage decrease between an original value and a new lower value. Shows the absolute decrease and the percentage saved.
Open tool →Percentage Increase Calculator
Calculate the percentage increase or decrease between two values. Shows the absolute change and whether it's an increase or decrease.
Open tool →Random Number Generator
Generate random integers within a custom range. Set min, max, and count to generate multiple random numbers at once.
Open tool →Salary Calculator
Convert any salary rate to all time periods: hourly, daily, weekly, bi-weekly, monthly, and yearly. Works with any rate type.
Open tool →Scientific Calculator
Online scientific calculator with trigonometric functions, logarithms, square root, powers, and constants π and e.
Open tool →Simple Interest Calculator
Calculate simple interest, total amount, and monthly loan payments. Uses the formula SI = P × R × T / 100.
Open tool →Standard Calculator
A clean, fast standard calculator for everyday arithmetic: addition, subtraction, multiplication, and division.
Open tool →Time Duration Calculator
Calculate the duration between two times in hours, minutes, and seconds. Handles overnight shifts that cross midnight.
Open tool →Tip Calculator
Calculate the tip amount, total bill, and per-person split for any number of people. Quick tip buttons for 10%, 15%, 18%, 20%, and 25%.
Open tool →Unit Price Calculator
Compare the unit price of up to 3 products side by side. Find out which product gives you the best value for money.
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