Math Calculators

Free math calculators for percentages, fractions, ratios, averages, standard deviation, GPA, and margins.

7 free tools available

Calculate percentage increase, decrease, and what percentage one number is of another.

Add, subtract, multiply, and divide fractions.

Simplify ratios and find missing values in proportions.

Calculate mean, median, and sum from a list of numbers.

Calculate standard deviation and variance from a dataset.

Calculate weighted GPA from course grades and credits.

Calculate profit margin, markup, and cost from price.