Math Tools
Calculate percentages, ratios, averages, GCD/LCM, prime numbers, and solve equations. Fast client-side math tools for students and professionals.
Percentage Calculator
Calculate percentages, increases, decreases, and ratios
Ratio Calculator
Simplify, scale, and find equivalent ratios
Average Calculator
Calculate mean, median, mode, range, and standard deviation
GCD & LCM Calculator
Find greatest common divisor and least common multiple
Prime Number Tools
Check, factorize, generate, and find prime numbers
Equation Solver
Solve linear and quadratic equations step by step
Unit Converter
Convert between length, weight, temperature, volume, and more
Fraction Calculator
Add, subtract, multiply, divide, and simplify fractions
Roman Numeral Converter
Convert between Roman numerals and decimal numbers
Fibonacci Calculator
Generate sequences, find nth terms, and check Fibonacci numbers
Logarithm Calculator
Calculate logโโ, ln, logโ, and custom base logarithms
Statistics Calculator
Mean, median, mode, standard deviation, and more
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Matrix Calculator
Trigonometry Calculator
Learn Math Tools
Key concepts and practical guides to level up your workflow.
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A mathematical notation describing the upper bound of an algorithm's time or space complexity as โฆ
A discrete probability distribution modeling the number of successes in a fixed number of independent โฆ
A selection of elements without regard to order โ n choose r equals n!/[r!(n-r)!].
A measure of the linear relationship between two variables, ranging from -1 (inverse) to +1 โฆ
An operation on two 3D vectors producing a vector perpendicular to both, with magnitude equal โฆ
A measure of uncertainty or information content in a dataset, calculated as the negative sum โฆ
A function where the variable appears as an exponent (e.g. e^x), modeling rapid growth or โฆ
A formula for updating the probability of a hypothesis given new evidence, foundational to statistical โฆ
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Password generation requires cryptographic randomness and careful character selection. This guide covers the principles behind strong password generation, entropy calculation, and common generation mistakes to โฆ
Percentage calculations appear simple but hide common errors, especially around percentage change, percentage points, and compound percentages. This guide clarifies the math behind everyday percentage โฆ
Algorithmic color palette generation creates harmonious color schemes from a single base color. Learn the math behind complementary, analogous, and triadic palettes and how to โฆ
Floating-point arithmetic produces surprising results that can cause bugs in financial calculations, comparisons, and cumulative operations. This guide explains why these errors occur and how โฆ
Explore All Peasy Tools
15 specialized sites โ one easy-peasy family.