Math Calculators
Algebra, geometry, statistics and number tools, every one with the steps shown.
Area Calculator
Calculate the area of rectangles, triangles, circles and trapezoids.
50BBasic Calculator
A simple calculator for addition, subtraction, multiplication and division.
20BBig Number Calculator
Add, subtract or multiply integers of unlimited size, exactly.
121932631356500531469135800347203169112635269CCircle Calculator
Find the radius, diameter, circumference and area of a circle from any one value.
5CCommon Factor Calculator
List every factor shared by two or more numbers.
1, 2, 3, 4, 6, 12CConfidence Interval Calculator
Calculate a confidence interval for a sample mean.
47.521 to 52.479DDistance Calculator (Coordinates)
Calculate the straight-line distance between two points.
5EExponent Calculator
Calculate a base raised to a power, including negative and fractional exponents.
1,024FFactor Calculator
List all the factors (divisors) of a whole number.
1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60FFraction Calculator
Add, subtract, multiply or divide two fractions and simplify the result.
5/6GGCF & LCM Calculator
Find the greatest common factor and least common multiple of a list of numbers.
6HHalf-Life Calculator
Calculate the remaining amount of a substance after radioactive/exponential decay.
18.9465LLog Calculator
Calculate the logarithm of a number for any base, including natural log.
2LLong Division Calculator
Divide two numbers and see the quotient and remainder.
15MMatrix Calculator (2×2)
Add, subtract, multiply, or find the determinant/inverse of 2×2 matrices.
[19, 22; 43, 50]MMean, Median, Mode & Range Calculator
Calculate the mean, median, mode and range of a set of numbers.
5NNumber Base Converter
Convert numbers between binary, octal, decimal and hexadecimal.
11111111NNumber Sequence Calculator
Generate an arithmetic or geometric sequence and its sum.
39PP-Value Calculator
Calculate the one-tailed and two-tailed p-value for a z-score.
0.025PPercent Error Calculator
Calculate the percent error between an experimental and theoretical value.
2%PPercentage Calculator
Find a percentage of a number, what percent one number is of another, or percent change.
30PPermutation & Combination Calculator
Calculate nPr (permutations) and nCr (combinations).
720PPrime Factorization Calculator
Break a number down into its prime factors.
2^3 × 3^2 × 5PProbability Calculator
Calculate a single event's probability, or the combined probability of two independent events.
16.667%PPythagorean Theorem Calculator
Find the hypotenuse or a missing leg of a right triangle.
5QQuadratic Formula Calculator
Solve ax² + bx + c = 0 for x.
2RRatio Calculator
Simplify a ratio, or solve a proportion A:B = C:D for the missing value.
2 : 3RRight Triangle Calculator
Solve a right triangle's sides and angles from two known values.
10RRoot Calculator
Calculate the nth root of a number.
3RRounding Calculator
Round a number to a chosen number of decimal places.
3.14SSample Size Calculator
Calculate the survey sample size needed for a target margin of error.
385SScientific Calculator
A real button-based scientific calculator with memory, trig, logs and more.
8.5SScientific Notation Calculator
Convert a number to and from scientific notation.
1.234 × 10^8SSimple Calculator
A real button calculator for everyday arithmetic, with memory keys.
20SSlope Calculator
Calculate the slope and equation of a line through two points.
3SStandard Deviation Calculator
Calculate population and sample standard deviation from a data set.
4.899SStatistics Calculator
Get mean, median, mode, range, variance and standard deviation from a data set.
6SSurface Area Calculator
Calculate the surface area of a cube, box, sphere, cylinder or cone.
108TTriangle Calculator
Find the angles, area and perimeter of a triangle from its three side lengths.
14.6969VVolume Calculator
Calculate the volume of a cube, box, sphere, cylinder or cone.
72ZZ-score Calculator
Calculate a z-score and its percentile in a normal distribution.
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