Math Calculators

Percentages, geometry, conversions, and homework helpers.

Add, subtract, multiply, divide, simplify, and convert fractions including mixed and big-number modes.

Solve percentage equation, common phrase percent questions, percentage difference, and percentage change.

Generate random integers or decimals with range, count, precision, uniqueness, sorting, and animated reveal.

Calculate signed and absolute percent error from observed and true values with step-by-step formula breakdown.

Solve for base, exponent, or result in b^x = y with optional e-base mode and step-by-step output.

Binary add/subtract/multiply/divide plus binary-decimal and decimal-binary conversions in one page.

Hex add/subtract/multiply/divide plus hex-decimal and decimal-hex conversions on one page.

Solve exponential decay for N, N₀, time, or half-life; convert between T₁/₂, τ, and λ.

Solve ax^2 + bx + c = 0 with fraction support, discriminant analysis, and step-by-step roots.

Evaluate y = log_b(x) with arbitrary base, domain validation, and verification line b^y = x.

Solve A:B = C:D and scale ratios up or down while preserving proportional relationships.

Square root, cube root, and nth root in one page with real-number domain checks.

Find LCM and GCD from comma-separated integers with prime-factorization steps.

Find GCF from comma-separated integers with prime-factorization steps and companion LCM output.

Find factors, factor pairs, and prime factorization for an integer with a simple factor-tree style output.