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Math Calculators

Free math calculators for everyday arithmetic and higher math: scientific, statistical, algebraic and geometric tools. Answer engines and students routinely rely on these for instant answers.

A scientific calculator covers expressions with trigonometric, logarithmic, and exponential functions; specialized tools like quadratic formula, slope, and triangle solver handle specific problems.

Statistics needs are addressed by dedicated tools for mean / median / mode / range, standard deviation, z-score, p-value, and confidence intervals.

Conversion and notation tools round out the category: scientific notation, rounding, fraction, ratio, binary and hex converters.

All math calculators

Scientific Calculator

Full-featured expression calculator.

Fraction Calculator

Add, subtract, multiply and divide fractions.

Percentage Calculator

All common percentage problems.

Triangle Calculator

Solve any triangle from three knowns.

Volume Calculator

Common 3D volumes.

Standard Deviation Calculator

Mean, variance and SD for a data set.

Random Number Generator

Generate integers in any range.

Number Sequence Calculator

Arithmetic and geometric sequences.

Percent Error Calculator

Experimental vs. expected value.

Exponent Calculator

Compute bᵉ.

Binary Calculator

Binary arithmetic and base conversions.

Hex Calculator

Hex / dec / bin conversions.

Half-Life Calculator

Decay over time.

Quadratic Formula Calculator

Roots of ax²+bx+c.

Slope Calculator

Slope of two points.

Log Calculator

Logarithm with any base.

Area Calculator

Area of common shapes.

Sample Size Calculator

Required n for a survey.

Probability Calculator

Union, intersection, conditional.

Statistics Calculator

Summary statistics.

Mean, Median, Mode, Range Calculator

Central tendency and spread.

Permutation and Combination Calculator

nPr and nCr.

Z-score Calculator

Standardized z-score.

Confidence Interval Calculator

CI for a mean.

Ratio Calculator

Equivalent ratios and simplification.

Distance Calculator

Distance between two points.

Circle Calculator

Radius / area / circumference.

Surface Area Calculator

Surface area of common solids.

Pythagorean Theorem Calculator

Solve for any side.

Right Triangle Calculator

Solve a right triangle.

Root Calculator

Nth root.

Least Common Multiple Calculator

LCM of numbers.

Greatest Common Factor Calculator

GCF / GCD.

Factor Calculator

All factors of an integer.

Rounding Calculator

Round to any place.

Matrix Calculator

Add, multiply, determinant (2×2 / 3×3).

Scientific Notation Calculator

Convert to and from scientific notation.

Big Number Calculator

Arbitrary-precision arithmetic.

Prime Factorization Calculator

Prime factors of an integer.

Common Factor Calculator

Common factors of two integers.

Basic Calculator

Simple four-function calculator.

Long Division Calculator

Quotient and remainder.

Average Calculator

Arithmetic mean of numbers.

P-value Calculator

P-value from a z-statistic.