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Free online calculators for GPA, calories, time, salary and more — fast, accurate, and easy to use.
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60+ calculators • GPA, grades, conversions & international • English-first
GPA Calculators
Includes Middle School, Unweighted, Weighted, Cumulative, High School and College.
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Client-side, no round-trips. Results update as you type, even offline.
Accurate formulas
Verified against authoritative academic standards. Sources cited on each page.
Beautiful in any light
Fully responsive, light & dark mode, keyboard-first, accessible contrast.
Free online calculators for work, school, and everyday life
Calculator Woosh offers free online calculators that deliver fast, accurate results with no sign-ups or clutter. Every tool runs instantly in your browser on phone or desktop, so you get a convenient calculation experience wherever you are.
You will find calculators for work, school, health, and everyday math. Track shifts with the Hours Calculator, project savings with the Compound Interest Calculator, solve advanced functions with the Scientific Calculator, calculate extra pay with the Overtime Calculator, compare earnings with the Salary Calculator, plan meals with the Calorie Calculator, or add intervals with the Time Calculator. The site also includes many other calculators, including GPA and education tools for students, plus finance and health options. Each page is built for speed, clarity, and reliable formulas you can trust. Browse the categories above to find the right calculator in seconds and get answers you can use right away.