Everyday Math

Everyday math calculators handle the calculations that come up constantly in real life — splitting a restaurant bill, working out a discount, counting down to an important date, or converting between units. These tools are designed for speed: open, enter your numbers, get your answer in under five seconds.

The Percentage Calculator solves all three common percentage problems in one place: what is X% of Y, X is what percent of Y, and percentage change between two values — eliminating the mental arithmetic that trips most people up. The Date Difference Calculator gives you a precise breakdown in years, months, weeks, and days (including business days) between any two dates, handling leap years and variable month lengths automatically.

The Tip Calculator and Unit Converter are optimised for mobile use — large tap targets, instant results, no page reload needed. All tools work offline once loaded and require no account or sign-up.