Math Calculators

Percentage Calculator

Find what a percentage of a number is, instantly.

CAGR Calculator

Find the compound annual growth rate between a starting and ending value.

Percentage Change Calculator

Find the percentage increase or decrease between two numbers.

Average Calculator

Find the average (mean) of up to five numbers.

Quadratic Equation Calculator

Solve ax² + bx + c = 0 for its real roots, instantly.

Circle Calculator

Find the area and circumference of a circle from its radius.

Triangle Area Calculator

Find a triangle's area from its three side lengths, using Heron's formula.

Slope Calculator

Find the slope of a line between two points.

Distance Between Two Points Calculator

Find the straight-line distance between two points on a plane.

Ratio to Percentage Calculator

Convert a ratio like 3:2 into the percentage share of each part.

Percentage Error Calculator

Find the percentage error between a measured and an actual value.

Logarithm Calculator

Find the logarithm of a number to any base.

Exponent Calculator

Raise any number to any power, including negative and fractional exponents.

Root Calculator

Find the nth root of any positive number.

Sphere Volume Calculator

Find the volume and surface area of a sphere from its radius.

Cylinder Volume Calculator

Find the volume of a cylinder from its radius and height.

Geometric Mean Calculator

Find the geometric mean of two or three numbers.