Everyday Math

Tip & Bill Splitter

Calculate the perfect tip and split the bill among any number of people. Supports quick tip buttons (10–25%) or any custom percentage.

Percentage Calculator

Calculate percentages instantly — percent of a number, percent change, and what percent X is of Y.

Date Difference Calculator

Calculate the exact difference between two dates in years, months, days, hours, and minutes. Add or subtract days from a date.

Speed Distance Time Calculator

Calculate speed, distance, or time — enter any two values to find the third. Supports km/h, mph, and m/s.

Scientific Calculator

Full-featured scientific calculator with trigonometric functions, logarithms, powers, roots, and memory operations.

Random Number Generator

Generate random numbers, lists, dice rolls, coin flips, and random items from a custom list. Cryptographically random.

GCD & LCM Calculator

Calculate the Greatest Common Divisor (GCD) and Least Common Multiple (LCM) for up to 10 numbers, with step-by-step working shown.