Math & Algebra Calculators

Math and algebra calculators for percentages, fractions, equations, sequences and statistics — each one showing the working, not just the answer.

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+-×÷

Basic Calculator

Arithmetic operations visualized

A:B

Rule of Three

Proportion solving made visual

Percentage Calculator

Percentage calculations visualized

sin

Trigonometry

Interactive unit circle

Fractions

Fraction arithmetic visualized

GCD

GCD / LCM

Factor visualization

xⁿ

Exponents & Roots

Powers and roots visualized

log

Logarithms

Interactive log curve

Statistics

Data visualization and stats

ax²

Quadratic Formula

Roots on a live parabola

y=mx

Linear Equation / Slope

Line equation with graph

Number Base Converter

Binary, hex, octal converter

nCr

Combinations & Permutations

nCr and nPr visualized

p×q

Prime Factorization

Factor tree visualized

aₙ

Sequences Calculator

Arithmetic & geometric sequences

XIV

Roman Numeral Converter

Decimal ↔ Roman numerals

sig

Significant Figures

Sig figs identified & rounded

[M]

Matrix Calculator

Matrix operations step-by-step

Σw

Weighted Average

Compute a weighted mean from a list of values and corresponding weights

Z-Score

Compute the standard score z = (x - mean) / standard deviation

🎲

Binomial Probability

Binomial probability and cumulative distribution: exactly, at most, at least k successes

📐

Polynomial Root Finder

Find real roots of a cubic ax³+bx²+cx+d via Cardano's formula plus the discriminant