Math calculators

Everyday arithmetic, algebra, and geometry — worked out clearly.

Percentages, fractions, ratios, geometry, and the little calculations that come up all the time — with formulas you can reuse anywhere.

Calculators
244
Topics: All Percentage (75) Fractions (4) Geometry (63)
244 results
Math / Geometry

Angle Between Vectors Calculator

Compute the angle between two 3D vectors using cos θ = (a·b) / (|a| · |b|), and report the angle in both degrees and rad...

basic
20,590 4.3 1 min
Math / Geometry

Polar to Cartesian Converter

Convert a polar coordinate (r, θ) into the Cartesian coordinate (x, y) = (r cos θ, r sin θ), with θ entered in degrees.

basic
21,498 3.8 1 min
Math / Percentage

Factorial Calculator

Compute the factorial n! = 1 · 2 · 3 · ... · n for any non-negative integer up to 170 (the largest n that fits in a doub...

basic
8,801 4.3 1 min
Math / Percentage

Fibonacci Calculator

Compute the n-th Fibonacci number F(n), its neighbors F(n−1) and F(n+1), and the running sum of the first n terms.

basic
10,566 4.4 1 min
Math / Percentage

Geometric Mean Calculator

Compute the geometric mean of a list of positive numbers — useful for averaging growth rates and ratios.

basic
4,577 4.5 1 min
Math / Percentage

Harmonic Mean Calculator

Compute the harmonic mean of a list of positive numbers — useful for averaging rates such as speeds or ratios.

basic
6,170 4.8 1 min
Math / Percentage

Midrange Calculator

Compute the midrange of a list of numbers — the simple average of the smallest and largest values.

basic
14,011 3.9 1 min
Math / Percentage

Weighted Average Calculator

Compute a weighted average from two equal-length lists of values and weights — useful for grades, weighted survey scores...

basic
16,836 4.2 1 min
Math / Percentage

Complex Number Calculator

Add, subtract, multiply, or divide two complex numbers (a + bi) and (c + di), and see the result in both rectangular and...

basic
8,405 4.7 1 min