Math Calculators
From quick percentage calculations to complex geometry — our math calculators cover everything students, teachers, and professionals need. All results show step-by-step breakdowns so you understand the "how" behind every answer.
Exercise & Cardio
View all →Core Math
View all →Percentage Calculator
Percent of, percent change, and what percent
Average Calculator
Mean, median, mode, and standard deviation
Fraction Calculator
Add, subtract, multiply, and divide fractions
Ratio Calculator
Simplify ratios or solve proportions
Area Calculator
Area of squares, rectangles, circles, triangles
Volume Calculator
Volume of 3D shapes — cubes, spheres, cylinders
Surface Area Calculator
Surface area of cubes, spheres, cylinders & cones
Triangle Calculator
Area, sides, and angles via Pythagorean theorem
Exponent Calculator
Any base raised to any power
Square Root Calculator
Square roots, cube roots, squares, and cubes
Logarithm Calculator
Log base 10, natural log, or any custom base
LCM & GCD Calculator
Least common multiple and greatest common divisor
Quadratic Calculator
Solve ax² + bx + c = 0 with roots and vertex
Matrix Calculator
Add, multiply, determinant & inverse (2×2 to 4×4)
Factorial Calculator
Calculate n! with multiplication steps
Slope Calculator
Slope, distance, midpoint, and line equation
Rounding Calculator
Round to decimal places with floor, ceil, or truncate
Modulo Calculator
Remainder after division — a mod b
Percentage Error Calculator
Percent error between experimental and theoretical values
Circle Calculator
Area, circumference, diameter, and radius from any input
Law of Cosines Calculator
Solve any triangle from SSS or SAS
Angle Converter
Convert between degrees, radians, gradians, and arc minutes
Basic Calculator
Fast online calculator for add, subtract, multiply, divide
Scientific Calculator
Trig, logs, exponents, roots & constants with full order of operations
Pythagorean Theorem Calculator
Solve a² + b² = c² for any right-triangle side
Number Sequence Calculator
nth term & sum of arithmetic or geometric sequences
Stats & Numbers
View all →Random Number Generator
Random numbers in any range
Binary Converter
Convert between binary, decimal, hex, and octal
Scientific Notation
Convert to and from scientific notation
Combination Calculator
Combinations C(n,r) and permutations P(n,r)
Permutation Calculator
Permutations nPr — ordered arrangements of r from n
Prime Number Calculator
Check if a number is prime or find the nth prime
Significant Figures Calculator
Count sig figs and round to any precision
Z-Score Calculator
Standard score and percentile for normal distributions
Number Base Converter
Convert between binary, decimal, hex, octal, and any base 2–36
Standard Deviation Calculator
Standard deviation, variance & mean (sample or population)
Mean, Median, Mode Calculator
Mean, median, mode, and range for any data set
Probability Calculator
Single and two-event probability with and/or/not
Confidence Interval Calculator
Confidence interval & margin of error for a mean
Sample Size Calculator
How many people to survey for a reliable result
Home & DIY
View all →Science & Weather
View all →Other Categories
Frequently Asked Questions
How do I calculate a percentage?
There are three common percentage problems: (1) X% of Y — multiply Y by X/100. (2) X is what % of Y — divide X by Y and multiply by 100. (3) Percentage change — divide the difference by the original value and multiply by 100.
What math calculators are available?
Percentage, average/statistics, fractions, ratios, area, volume, triangle, and exponent calculators are all live. More are being added regularly.
Are these calculators good for students?
Yes. Every calculator shows a step-by-step breakdown of the calculation, making it easy to learn the formula, not just the answer.