About CalcYouNeed

CalcYouNeed is a collection of free online calculators for everyday math and money: percentages, loans, savings, ages and tips, with more added regularly.

How the calculators work

Every calculator runs in your browser using JavaScript. The numbers you enter are processed on your own device and are not sent to our server. Each page explains the formula it uses so you can check the result yourself.

Accuracy

We test each calculator against known examples and correct problems when they are reported. Results are estimates for general information, not financial or professional advice.

Feedback

Found a mistake or want a calculator added? Write to contact@calcyouneed.com.