Math calculators

Calculate percentages, parts, totals, increases, and decreases.

Find the percentage increase or decrease from an old value to a new value.

Calculate the average of comma-separated numbers.

Simplify a two-number ratio.

Add, subtract, multiply, or divide two fractions.

Calculate the square root of a number.

Calculate powers, roots, sine, cosine, tangent, and logarithms.

Calculate least common multiple of two numbers.

Calculate greatest common divisor of two numbers.

Check whether a number is prime.

Calculate circle area and circumference from radius.

Calculate triangle area from base and height.

Scale width or height while preserving aspect ratio.

Calculate permutations nPr.

Calculate combinations nCr.

Calculate mean, variance, and standard deviation from comma-separated numbers.

Calculate count, sum, mean, median, min, max, and range.

Find mean, median, and mode from a list of numbers.

Calculate probability from favorable outcomes and total outcomes.

Solve ax² + bx + c = 0 using the quadratic formula.

Find slope from two coordinate points.

Calculate logarithm for a value and base.

Calculate the hypotenuse from two right-triangle legs.

Calculate quotient and remainder for integer division.

Convert a number or decimal into a percent.

Convert a percent into decimal form.

Convert a decimal to an approximate fraction.

Convert a fraction into decimal and percent form.

Round a number to a selected number of decimal places.

Calculate the absolute value of a number.

Calculate n factorial for non-negative integers.

Calculate the remainder after division.

Solve a simple linear equation ax + b = c.

Calculate distance between two coordinate points.

Find the midpoint between two coordinate points.