Everyday Calculators

Everyday calculators cover practical, quick calculations: splitting a tip, working out a sale price, converting a test score to a letter grade, or estimating the fuel cost of a trip. Each tool explains its formula so you can adapt it to your own numbers.

• Tip CalculatorWork out the tip, total bill, and per-person split for any check.
• Discount CalculatorFind the sale price and savings after a percentage discount.
• Grade CalculatorConvert points earned into a percentage and a letter grade.
• Fuel Cost CalculatorEstimate the fuel needed and total cost of a trip from distance, fuel economy, and price per gallon.