Math Calculators
Percentage, scientific, algebra, geometry, and statistics calculators.
From homework help to engineering checks, math calculators save time and reduce errors on everyday and advanced problems. Our math tools cover percentages, fractions, algebra, geometry, statistics, and number theory — with step-by-step explanations where applicable.
Students, teachers, professionals, and hobbyists use these calculators to verify manual work, explore concepts, and solve problems faster. Each tool is free, works offline once loaded, and requires no account.
Browse scientific and graphing-style functions, quadratic solvers, matrix operations, prime factorization, area and volume formulas, standard deviation, combinations, and more in the grid below.
Everyday arithmetic
Percentage change, fraction operations, ratios, square roots, GCD/LCM, and random number generation.
Algebra & equations
Quadratic formula solver, exponent and logarithm calculators, and matrix operations for linear algebra basics.
Geometry & measurement
Area and volume for common shapes, Pythagorean theorem, and unit-aware geometry helpers.
Statistics & probability
Standard deviation, combinations and permutations, and binary/hex number conversion.
All Math Tools
19 free calculators — click any tool to open it instantly.
Percentage Calculator
Find percentage of a number, percentage change, reverse percentages, and what percent one value is of another — all in one tool.
Final Grade Calculator
Calculate what score you need on your final exam to get your desired course grade — or predict your overall grade.
Scientific Calculator
A full-featured scientific calculator with trigonometry, logarithms, and advanced math functions.
Fraction Calculator
Add, subtract, multiply, and divide fractions. Simplify results to lowest terms automatically.
Square Root Calculator
Calculate the square root, cube root, or any nth root of any positive number.
GCD & LCM Calculator
Find the Greatest Common Divisor (GCD) and Least Common Multiple (LCM) of two or more numbers.
Exponent Calculator
Calculate powers and exponents — raise any base number to any power including fractions and negatives.
Logarithm Calculator
Calculate logarithms of any base — common log (base 10), natural log (ln), or custom base logarithms.
Standard Deviation
Calculate mean, variance, and standard deviation for a set of numbers — both population and sample.
Quadratic Equation Solver
Solve quadratic equations (ax² + bx + c = 0) and find real or complex roots using the quadratic formula.
Matrix Calculator
Perform matrix operations — addition, subtraction, multiplication, determinant, inverse, and transpose.
Pythagorean Theorem
Calculate the missing side of a right triangle using the Pythagorean theorem (a² + b² = c²).
Prime Factorization
Find the prime factorization of any integer and determine whether a number is prime or composite.
Binary Converter
Convert between binary, decimal, octal, and hexadecimal number systems instantly.
Combinations & Permutations
Calculate the number of combinations (nCr) and permutations (nPr) for probability and counting problems.
Area Calculator
Calculate the area of common shapes — circle, rectangle, triangle, trapezoid, ellipse, and more.
Volume Calculator
Calculate the volume of 3D shapes — sphere, cylinder, cone, cube, rectangular prism, and more.
Ratio Calculator
Simplify ratios, find equivalent ratios, and solve proportion problems with step-by-step solutions.
Random Number Generator
Generate random numbers within a custom range — integers or decimals, single values or multiple sets.