Everyday calculators
Pick a calculator. Each shows the answer as you type, with the steps underneath.
Grade percentage calculatorTurn points earned out of points possible into a percent.Open the calculator ›Discount calculatorSale price and savings from an original price and a percent off.Open the calculator ›Sales tax calculatorAdd sales tax at the rate you enter to any price.Open the calculator ›Tip calculatorTip, total and the amount each person pays.Open the calculator ›Markup and margin calculatorProfit, margin and markup from a cost and a selling price.Open the calculator ›
Everyday calculators
Method: standard arithmetic shown step by step; no outside data is used. Checked 2026-11-12.
Written by Calculators Free Editorial Team · Data checked 2026-11-12
About · How we verify this · Editorial policy · Corrections
About · How we verify this · Editorial policy · Corrections
General information only. Results are plain arithmetic on the numbers you enter; check anything important (money, health, school work) against your own records or the official source.