CalculatorCamp

11 tools

Everyday Math Calculators

Percentages, age, GPA, averages, and more.

Most daily maths is a handful of operations applied carefully: percentages, averages, ratios, and date arithmetic. These calculators do the careful part for you and show the expression they evaluated so you can follow the logic and reuse it next time.

The percentage tools cover the three questions people actually ask — what is X% of Y, X is what percent of Y, and what is the percentage change between two values — while the age and date tools account for month lengths and leap years rather than assuming 30-day months.

All everyday math calculators

Pick a tool to see the calculator, formula, worked example, and FAQs.

Math Percentage Of What is X% of Y? Math What Percent? X is what percent of Y? Math Percentage Change Increase or decrease between two values. Math Age Calculator Exact age in years, months, days. Math Date Difference Days / months / years between two dates. Math Fuel Cost Trip fuel needed and cost. Math Basic Calculator Add, subtract, multiply, divide. Math Average / Mean Average, min, max of a list of numbers. Math Ratio Simplifier Simplify A:B ratios. Math Square & Cube Root Square root, cube root, square, cube. Math GPA Calculator GPA from grades or credit:grade pairs.

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