Math Calculators
Math calculators for algebra, geometry, statistics, fractions, percentages and number theory, with step-by-step formulas and worked results.
Scientific Calculator
A full scientific calculator with trigonometry, logarithms, powers, roots, me…
Fraction Calculator
Add, subtract, multiply and divide fractions, with the answer simplified and …
Percentage Calculator
Every common percentage question in one place: percent of a number, percent c…
Triangle Calculator
Solve a triangle from three sides: area, perimeter, all three angles, height …
Volume Calculator
Calculate the volume of cubes, boxes, cylinders, spheres, cones, pyramids and…
Standard Deviation Calculator
Compute standard deviation, variance, mean, sum of squares and the full five-…
Random Number Generator
Generate one or many random numbers in any range, with or without duplicates.
Number Sequence Calculator
Generate arithmetic, geometric and Fibonacci sequences with the nth term and …
Percent Error Calculator
Compare an observed value with a true value to get percent error, absolute er…
Exponent Calculator
Raise any base to any power, including negative and fractional exponents.
Binary Calculator
Add, subtract, multiply, divide and run bitwise operations on binary numbers,…
Hex Calculator
Do arithmetic in hexadecimal and convert between hex, decimal, octal and bina…
Half-Life Calculator
Compute remaining quantity, decay constant and mean lifetime for any exponent…
Quadratic Formula Calculator
Solve ax² + bx + c = 0 with real or complex roots, plus the discriminant, ver…
Slope Calculator
Find slope, intercept, distance and angle between two points, and get the lin…
Log Calculator
Take a logarithm in any base, plus ln, log₁₀, log₂ and the antilogarithm.
Area Calculator
Calculate the area of eight common shapes, with the formula shown alongside e…
Sample Size Calculator
Find the sample size a survey needs for a chosen confidence level and margin …
Probability Calculator
Combine probabilities: intersection, union, complement, conditional probabili…
Statistics Calculator
Full descriptive statistics for a data set: mean, median, mode, range, quarti…
Mean, Median, Mode, Range Calculator
The four measures every statistics class starts with, computed together with …
Permutation and Combination Calculator
Calculate permutations, combinations, factorials and repetition variants for …
Z-score Calculator
Convert a raw score to a z-score and a percentile, and back again.
Confidence Interval Calculator
Build a confidence interval around a sample mean, with the standard error and…
Ratio Calculator
Solve proportions, simplify ratios, scale them up or down and convert to perc…
Distance Calculator
Distance and midpoint between two points using the Pythagorean distance formu…
Circle Calculator
Enter any one circle property and get radius, diameter, circumference and are…
Surface Area Calculator
Total and lateral surface area for six common solids.
Pythagorean Theorem Calculator
Solve for any missing side of a right triangle with a² + b² = c².
Right Triangle Calculator
Solve a right triangle: hypotenuse, both acute angles, area, perimeter and al…
Root Calculator
Square roots, cube roots and any nth root, including roots of decimals.
Least Common Multiple Calculator
Find the LCM of two or more numbers, with the prime factorization that produc…
Greatest Common Factor Calculator
Find the GCF of any set of numbers using the Euclidean algorithm, with all co…
Factor Calculator
List every factor and factor pair of a number, and tell you whether it is pri…
Rounding Calculator
Round to decimal places, significant figures or the nearest ten, hundred or t…
Matrix Calculator
Add, subtract and multiply matrices, or find a determinant, inverse or transp…
Scientific Notation Calculator
Convert between decimal, scientific, engineering and E notation, with signifi…
Big Number Calculator
Arithmetic on numbers far beyond normal precision, using exact big-integer ma…
Prime Factorization Calculator
Break a number into prime factors, shown in expanded and exponent form with a…
Common Factor Calculator
List every factor two or more numbers share, and highlight the greatest one.
Basic Calculator
A clean four-function calculator with percent, sign change and memory — no cl…
Long Division Calculator
Divide with the full long-division worked out step by step, including the rem…
Average Calculator
Mean, median, mode, sum and count for any list of numbers you paste in.
P-value Calculator
Convert a z, t or chi-square statistic into a p-value and check it against yo…
About the math calculators
Math calculators for algebra, geometry, statistics, fractions, percentages and number theory, with step-by-step formulas and worked results. There are 44 tools in this category, and each one shows the formula it uses, works instantly as you type, and keeps your figures on your own device.
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