Free calculators for school, health, money and science

Calcz has simple, accurate calculators that work in your browser. No sign-up, and nothing you enter is saved.

Academic

Grades, GPA and grade conversions.

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Weighted Grade CalculatorCombine assignment grades with their weights to get your overall grade.Open calculatorFinal Grade CalculatorFind the score you need on your final exam to reach a target grade.Open calculatorInternational Grade to GPA ConverterEstimate the US GPA equivalent of a grade from another country.Open calculatorGPA CalculatorCalculate your GPA for one term from course grades and credits.Open calculatorCumulative GPA CalculatorCombine your current GPA with a new term to get your overall GPA.Open calculator

Fitness

Body measurements, calories and nutrition.

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BMI CalculatorCheck your body mass index from your height and weight.Open calculatorCalorie CalculatorEstimate how many calories you need per day to maintain, lose or gain weight.Open calculatorMacro CalculatorSplit your daily calories into protein, carbs and fat.Open calculator

Finance

Savings, interest and growth.

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Compound Interest CalculatorSee how savings grow over time with interest and regular deposits.Open calculator

Science

Chemistry calculations.

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Molar Mass CalculatorCalculate the molar mass of a compound from its chemical formula.Open calculator

Why use Calcz

Free to use

Every calculator is free, with no limits and no paid version.

No sign-up

There are no accounts. Open a calculator and start.

Your data isn’t saved

Calculations run in your browser. We don’t store what you enter.