Math Tools

Free online math calculators — percentage, fraction, average, ratio, and scientific calculation tools.

Scientific Calculator

Full-featured scientific calculator with trigonometric, logarithmic, and exponential functions.

Calculate percentages, percentage increase/decrease, and find the original value.

Calculate sale prices and savings with percentage or fixed-amount discounts.

Calculate the percentage increase from one value to another.

Calculate the percentage decrease from one value to another.

Calculate the average (mean) of a set of numbers.

Add, subtract, multiply, and divide fractions with step-by-step simplification.

Simplify ratios, find equivalent ratios, and solve ratio proportions.

Calculate tips and split bills among any number of people.

Calculate the arithmetic mean of a data set with detailed steps.

Calculate the median (middle value) of a data set.

Calculate the mode (most frequent value) of a data set.

Calculate population and sample standard deviation with variance.

Generate random numbers within a specified range with distribution control.