➗ Math Calculators
Algebra, statistics, geometry and number tools. 46 free tools.
Percentage Calculator
Solve all common percentage problems: percent of, is what percent, and percent change.
Basic Math Calculator
A fast arithmetic calculator handling + − × ÷ ^, powers and parentheses.
Basic Calculator
A simple reliable calculator for everyday arithmetic.
Scientific Calculator
A scientific calculator with trigonometry, logarithms, powers and constants.
Percent Error Calculator
Compare a measured value with the true value as a percentage.
Random Number Generator
Generate random numbers within a range, with optional repeats and sorting.
Binary Calculator
Add, subtract, multiply and divide binary numbers, with decimal and hex results.
Hexadecimal Calculator
Add, subtract, multiply and divide hexadecimal numbers with decimal and binary views.
GCF Calculator
Find the greatest common factor (GCD) and least common multiple of two numbers.
Common Factor Calculator
List every factor shared by two numbers.
LCM Calculator
Find the least common multiple of two or more numbers.
Factor Calculator
List all positive factors of a whole number.
Prime Factorization Calculator
Break a number into its prime factors, with an exponent form.
Half Life Calculator
Find the half-life of a decaying quantity, or project how much remains after time.
Rounding Calculator
Round a number to a chosen number of decimal places with several tie-breaking rules.
Root Calculator
Calculate the nth root of a number.
Exponent Calculator
Raise a base to a power and see powers of two bases side by side.
Quadratic Formula Calculator
Solve ax² + bx + c = 0 with the quadratic formula, real or complex roots.
Log Calculator
Compute log and antilog in any base.
Parametric Equation Calculator
Evaluate a parametric equation x(t), y(t) at chosen t values.
Slope Calculator
Find the slope between two points and the line equation.
Area Calculator
Compute the area of common shapes.
Surface Area Calculator
Compute surface area and volume of common 3D shapes.
Circle Calculator
Find radius, diameter, circumference and area of a circle from any one value.
Pythagorean Theorem Calculator
Find the missing side of a right triangle with a² + b² = c².
Right Triangle Calculator
Solve a right triangle: sides, angles, area and perimeter from any two sides.
Triangle Calculator
Compute area, angles and perimeter of any triangle from three sides.
Fraction Calculator
Add, subtract, multiply and divide fractions, simplified.
Trigonometry Calculator
Evaluate sin, cos, tan and inverse functions in degrees or radians.
Average Calculator
Find the mean of a set of numbers, with several average types.
Mean, Median, Mode, Range Calculator
One click for mean, median, mode, range and sorted view of a dataset.
Standard Deviation Calculator
Population and sample standard deviation, variance and mean.
Statistics Calculator
A quick statistical summary of a dataset: mean, median, quartiles, SD and more.
Z Score Calculator
Find the z-score and the probability under the normal curve.
P Value Calculator
Get the p-value for a z-score, one-tailed or two-tailed.
Confidence Interval Calculator
Build a confidence interval for a mean from your sample.
Sample Size Calculator
Estimate the sample size needed for a survey or experiment.
Permutation and Combination Calculator
Count permutations and combinations, with or without repetition.
Probability Calculator
Combine probabilities of one or two independent events.
Ratio Calculator
Simplify ratios and split a total in a given ratio.
Distance Calculator
Distance between two points in 2D or 3D space.
Number Sequence Calculator
Generate arithmetic, geometric and Fibonacci sequences and sums.
Digit Sum Calculator
Add the digits of a number, with the digital root for repeated sums.
Big Number Calculator
Add and multiply arbitrarily large integers exactly, digit by digit.
Long Division Calculator
Divide two integers and see the quotient, remainder and decimals.
Matrix Calculator (2x2)
Add, multiply and invert 2x2 matrices, with determinants.