Math Tools

Three-in-one percentage calculator: X% of Y, X as a % of Y, and % increase/decrease. Instant, client-side.

Online scientific calculator — trig, log, powers, roots, factorial, π/e, DEG/RAD, with a proper expression parser. Client-side.

Add, subtract, multiply and divide fractions with automatic simplification, decimal and mixed-number output. Client-side.

Exact nCr, nPr and n! with big-integer precision. Client-side, no signup.

Solve quadratics (real/complex roots + discriminant) and 2×2 linear systems. Client-side.

Add, subtract, multiply, transpose matrices and find determinant & inverse (2×2 to 4×4). Client-side.

Generate a full truth table from a boolean expression (AND/OR/NOT/XOR/→/↔), up to 8 variables. Client-side.

Plot y = f(x) for any expression over a custom range — powers, trig, logs, roots. Client-side.

Add, subtract, dot, cross, magnitude, unit vector and angle for 2D/3D vectors. Client-side and instant.

Union, intersection, difference, symmetric difference plus subset/superset checks. Duplicates removed automatically.

Minimise 2–4 variable Boolean functions to simplest SOP with don’t-care support. Shows prime implicants.

Symbolic first and second derivatives plus a numeric definite integral (Simpson’s rule). Client-side.

Descriptive statistics — mean, median, mode, range, variance, SD, quartiles (sample & population). Client-side; data never leaves your device.

Convert a value to a z-score and a z-score to a percentile (standard normal). Client-side.

Single events, independent AND/OR, and the binomial distribution P(X=k)/P(X≤k)/P(X≥k). Client-side.

Least-squares best-fit line with r and R² and a live scatter plot. Client-side; your data stays private.

Mean, variance and sample/population standard deviation with the full working shown. Client-side and private.

Two-way Roman numeral converter (1–3999) with full validation. Client-side.

Greatest common divisor and least common multiple of any list of integers, exact. Client-side.