Everyday Tools

Simple, free calculators and converters used all over the world — figure out your age, BMI, a tip, unit conversions, or the days between two dates. Everything runs in your browser; nothing is uploaded.

Date & Time

Calculate your exact age in years, months, and days.

Date Difference Calculator

Count the days, weeks, and months between two dates.

Health & Fitness

Calculate your Body Mass Index in metric or imperial units.

Money & Everyday

Calculate the tip and split the bill between any number of people.

Converters

Convert length, weight, temperature, volume, area, speed, and data.