Math

41 calculators covering basic arithmetic, percentage, fractions, scientific (trig/log/exp), statistics (mean, median, mode, stddev, variance, z-score, confidence interval, sample size), algebra (quadratic, slope, distance, exponent, root), number theory (prime, GCD/LCM, factorial, perm-comb), number bases (binary/octal/hex), geometry shortcuts, and sequence math (AP/GP/Fibonacci).

Not yet — for now we render results numerically. The Quadratic Solver and Slope calculators include light visualizations. For complex graphing (function plots, derivatives), use Desmos or GeoGebra alongside. Interactive graphing is planned.

Yes — it uses standard order of operations (parentheses, exponents, multiplication/division, addition/subtraction). The Basic Calculator does left-to-right immediate evaluation (calculator-style).

Yes for Statistics, GCD/LCM, NPV, and IRR calculators. Paste comma- or space-separated numbers — we parse them automatically and filter out non-numeric values.

Computed in JavaScript using standard formulas. Mean / median / mode / stddev / variance match Excel and Python's `statistics` module to floating-point precision. For very large datasets (>10 000 values) the page may slow down; we recommend offline tools for that.

Permutation (nPr) counts arrangements where order matters (PIN codes, race positions). Combination (nCr) counts selections where order doesn't (lottery picks, team selections). Use the Permutation & Combination calculator for both.

The formulas follow standard ICSE / CBSE / NCERT and most international curriculums. Step-by-step reasoning isn't shown yet — we're working on a 'show working' mode for the algebra calculators.