Calculators
6 toolsFast, free everyday calculators — percentages, age and more. No signup.
Percentage CalculatorFree percentage calculator. Find X% of a number, what percent one number is of another, and percentage increase or decrease — instantly.Open tool →Age CalculatorFree age calculator. Enter your date of birth to find your exact age in years, months and days — plus total days lived. Instant and private.Open tool →Tip CalculatorFree tip calculator. Enter the bill, choose a tip percentage and split between people to see the tip, total and amount per person instantly.Open tool →Discount CalculatorFree discount calculator. Enter the original price and discount percentage to instantly see how much you save and the final sale price.Open tool →Average CalculatorFree average calculator. Paste a list of numbers to instantly find the average (mean), along with the sum, count, minimum and maximum.Open tool →Time Duration CalculatorFree time duration calculator. Enter a start and end time to find how many hours and minutes are between them — handles overnight spans too.Open tool →
Frequently asked questions
Are the calculators free?+
Yes, all calculators are free to use with no signup.
Is my data private?+
Completely — calculations run in your browser and nothing is sent to a server or saved.
Do they work on mobile?+
Yes, every calculator is mobile-friendly and works in any modern browser.