Math Hub
Math Calculators
75+ free tools — algebra, statistics, geometry, number theory, and more.
General Math
Core arithmetic, algebra, and general-purpose calculators
Scientific Calculator
Full-featured expression evaluator
Simple Math Calculator
Basic arithmetic operations
Online Math Calculator
Multi-function online calculator
Fraction Calculator
Add, subtract, multiply fractions
Percentage Calculator
Percentage of, change, increase
Random Number Generator
Random integers in any range
Percent Error Calculator
Experimental vs theoretical
Exponent Calculator
Base raised to any power
Exponents Calculator
Power expressions
Half-Life Calculator
Radioactive decay formula
Quadratic Formula Calculator
ax² + bx + c = 0
Log Calculator
Logarithm base 10 and natural
Ratio Calculator
Simplify and solve ratios
Root Calculator
Square, cube, and nth root
Square Root Calculator
√x exact and decimal
Rounding Calculator
Round to decimals or sig figs
Matrix Calculator
2×2 matrix operations
Scientific Notation Calculator
Convert to/from scientific notation
Big Number Calculator
Factorial, power, Fibonacci
Addition Calculator
Sum with steps
Subtraction Calculator
Difference with steps
Multiplication Calculator
Product with steps
Division Calculator
Quotient and remainder
Factorial Calculator
n! calculation
Exponential Growth Calculator
Population and compound growth
Remainder Calculator
Modulo / remainder
Number Theory
LCM, GCF, factors, primes, and number systems
LCM Calculator
Least Common Multiple
GCF / GCD Calculator
Greatest Common Factor
Factor Calculator
Prime factorization & all factors
Binary Calculator
Binary arithmetic & conversion
Hex Calculator
Hex arithmetic & conversion
Fractions
Add, subtract, multiply, divide, and simplify fractions
Fraction Calculator
All fraction operations
Adding Fractions
Sum of fractions with steps
Subtracting Fractions
Difference of fractions
Multiplying Fractions
Product of fractions
Dividing Fractions
Quotient of fractions
Statistics
Data analysis, probability, and statistical inference
Standard Deviation Calculator
Population & sample std dev
Number Sequence Calculator
Arithmetic, geometric, Fibonacci
Sample Size Calculator
Survey & experiment planning
Probability Calculator
AND, OR, conditional probability
Statistics Calculator
Full descriptive statistics
Mean, Median, Mode & Range
Central tendency measures
Permutation & Combination
nPr and nCr calculator
Z-Score Calculator
Standard score & percentile
Confidence Interval Calculator
CI for mean and proportion
Average Calculator
Arithmetic mean of numbers
Weighted Average Calculator
Average with custom weights
Variance Calculator
Population & sample variance
Percentage Change Calculator
Increase or decrease %
Percentage Increase Calculator
% increase calculation
Complex Numbers Calculator
Real & imaginary number ops
Trigonometry
Sine, cosine, tangent, and inverse trig functions
Trigonometry Calculator
All trig functions
Sine Calculator
sin(x) in degrees/radians
Cosine Calculator
cos(x) in degrees/radians
Tangent Calculator
tan(x) in degrees/radians
Arcsin Calculator
Inverse sine (sin⁻¹)
Arccos Calculator
Inverse cosine (cos⁻¹)
Arctan Calculator
Inverse tangent (tan⁻¹)
Natural Log Calculator
ln(x) — base e logarithm
Geometry
Area, volume, perimeter, and shape calculations
Triangle Calculator
Area, angles, sides (SSS/SAS/ASA)
Volume Calculator
Cylinder, sphere, cube & more
Slope Calculator
Gradient, angle, line equation
Area Calculator
Circle, rectangle, triangle & more
Distance Calculator
2D & 3D Euclidean distance
Circle Calculator
Area, circumference, arc, sector
Surface Area Calculator
3D shape surface area
Pythagorean Theorem Calculator
a² + b² = c²
Right Triangle Calculator
Solve any right triangle
Logarithm & Misc
Logarithms, notation, and other tools