Math Calculators

Percentage Calculator

Calculate percentages, percentage change, and what percent one number is of another.

Fraction Calculator

Add, subtract, multiply, and divide fractions. Simplify results to lowest terms automatically.

Standard Deviation Calculator

Calculate mean, median, mode, variance, and standard deviation for any set of numbers.

Scientific Calculator

A full-featured scientific calculator with trig, logarithm, exponent, and memory functions.

Probability Calculator

Calculate the probability of events, combinations, and permutations.

Ratio Calculator

Simplify ratios, find missing values, and compare ratios to find equivalents.

Square Root Calculator

Calculate square roots, cube roots, and nth roots with step-by-step solutions.

Pythagorean Theorem Calculator

Find any side of a right triangle using the Pythagorean theorem (a² + b² = c²).

Triangle Calculator

Calculate the area, perimeter, angles, and sides of any triangle.

Area Calculator

Calculate the area of circles, rectangles, triangles, trapezoids, and other shapes.

Z-Score Calculator

Calculate z-scores and find the corresponding percentile in a normal distribution.

GCF and LCM Calculator

Find the Greatest Common Factor (GCF) and Least Common Multiple (LCM) of two or more numbers.

Exponent Calculator

Calculate any base raised to any power, including negative and fractional exponents.

Logarithm Calculator

Calculate logarithms in any base: natural log (ln), log base 10, and custom bases.

Random Number Generator

Generate truly random numbers within any range. Pick multiple numbers or a unique set.

Volume Calculator

Calculate the volume of common 3D shapes: cube, sphere, cylinder, cone, rectangular prism, and more.

Quadratic Formula Calculator

Solve quadratic equations ax² + bx + c = 0 using the quadratic formula. Shows real and complex roots.

Speed, Distance, Time Calculator

Calculate speed, distance, or time given any two values. Convert between mph, km/h, and m/s.

Average Calculator

Calculate mean, median, mode, range, min, and max from any list of numbers.

Mean Median Mode Calculator

Calculate mean, median, mode, variance, and standard deviation with step-by-step solutions.

Percent Error Calculator

Calculate percent error between experimental and theoretical values. Used in science and engineering.

Slope Calculator

Calculate slope, y-intercept, line equation, distance, and midpoint from two coordinate points.

Circle Calculator

Calculate circle radius, diameter, circumference, and area from any one measurement.

Binary Calculator

Convert between binary, decimal, hexadecimal, and octal. Perform binary arithmetic including AND, OR, XOR.

Hex Calculator

Convert between hexadecimal, decimal, binary, and octal. Perform hex arithmetic and bitwise operations.

Factor Calculator

Find all factors of any number, prime factorization, number of factors, and sum of factors.

Rounding Calculator

Round numbers to any decimal place using standard, ceiling, floor, or significant figures rounding.

Permutation and Combination Calculator

Calculate permutations P(n,r) and combinations C(n,r) with factorial formulas.

Confidence Interval Calculator

Calculate confidence intervals at 90%, 95%, or 99% confidence level from sample mean, standard deviation, and size.

P-Value Calculator

Calculate p-value from Z-score or T-score for one-tailed and two-tailed hypothesis tests.

Sample Size Calculator

Calculate required sample size for surveys and experiments at any confidence level and margin of error.

Scientific Notation Calculator

Convert numbers to and from scientific notation and engineering notation. Perform arithmetic in scientific notation.

Prime Factorization Calculator

Find the prime factorization of any number with factor tree and GCD/LCM using prime factors.

Distance Calculator

Calculate Euclidean and Manhattan distance between two points, plus midpoint and slope.

Surface Area Calculator

Calculate total and lateral surface area for cubes, rectangular prisms, spheres, cylinders, cones, and triangular prisms.

Root Calculator

Calculate the nth root of any number. Find square root, cube root, 4th root, and any root instantly.

Half-Life Calculator

Calculate radioactive decay: find remaining amount, half-life, or elapsed time from any two known values.

Number Sequence Calculator

Identify arithmetic and geometric sequences, find next terms, nth term formula, and series sum.

Matrix Calculator

Perform 2x2 and 3x3 matrix operations: addition, subtraction, multiplication, transpose, determinant, and inverse.

Long Division Calculator

Calculate long division with step-by-step work shown. Get quotient, remainder, and decimal result for any two numbers.

Significant Figures Calculator

Count significant figures in any number, round to N sig figs, and perform arithmetic with correct sig fig rules.

Fibonacci Calculator

Generate Fibonacci sequences up to 50 terms, find the Nth Fibonacci number, and check if a number is in the sequence.

Modulo Calculator

Calculate the modulo (remainder) of any division. Explains the difference between modulo and remainder for negative numbers.

Big Number Calculator

Perform addition, subtraction, and multiplication on very large integers with exact precision using BigInt arithmetic.

Vector Calculator

Perform 2D and 3D vector operations: addition, subtraction, dot product, cross product, magnitude, and angle between vectors.

Percentage Increase Calculator

Calculate percentage increase or decrease between two values, find new value after a % change, or find the original value.

Inequality Calculator

Solve linear inequalities and compound inequalities. Get the solution, number line description, and interval notation.