Calculators

Quick calculations with clear inputs and useful explanations. Work out a percentage, split a bill, compare a sale price or calculate age.

Percentage Calculator

Percentages and percentage changes.

Tip & Split Calculator

Calculate tips and split a bill.

Discount Calculator

Sale price, savings and optional tax.

Age Calculator

Age in years, months and days.

About these tools

Choose Percentage Calculator for proportions and percentage changes, Tip & Split for shared bills, Discount Calculator for sale prices, or Age Calculator for calendar age. Check each example to see how its result is calculated.