Free Tools

Want to know exactly how old you are, down to the day? You can calculate it by hand in a few simple steps, or skip the math entirely with our free Age Calculator. The Manual Method: Step by Step Calculating your exact age involves comparing your birth date to today’s date across three units: years,

Percentage increase and decrease trip up a lot of people, but the formula is simple once you see it broken down. You can work it out by hand below, or use our free Percentage Calculator for an instant answer. The Formula Percentage change compares an original value to a new value, expressed as a percentage