Category
Advanced Math
Equations, roots, trig, statistics
Quadratic Equation Solver
Solve any quadratic equation ax² + bx + c = 0 with step-by-step discriminant analysis.
Linear Equation Solver
Solve linear equations in one variable — simple, general, or from free-form text. Verified solution with step-by-step derivation.
System of Equations Solver
Solve 2×2 and 3×3 systems of linear equations using Cramer's rule and elimination with step-by-step solutions.
Square Number Calculator
Calculate x² with step-by-step solution, perfect square check, and nearby squares table.
Cube Number Calculator
Calculate x³ with step-by-step solution, perfect cube check, and nearby cubes table.
Nth Power Calculator
Compute xⁿ for any base and exponent, or invert to solve for the base or exponent given a target result.
Exponent Calculator
Apply exponent rules — product, quotient, power, zero, negative, fractional and the powers of products and quotients — and convert between decimal, scientific and engineering notation. Live updates as you type.
Square Root Calculator
Calculate square roots with simplified radical form, perfect square check, and step-by-step simplification.
Cube Root Calculator
Compute cube roots, cubes, and general nth roots with exact radical forms, decimal approximations, and a nearby perfect-cubes number line.
Nth Root Calculator
Compute the nth root (ⁿ√x), invert to a power, or solve for the root index, with exact and decimal forms and step-by-step simplification.
Sine Calculator
Calculate sin(θ) with exact values for common angles, DEG/RAD toggle, related trig values, and quadrant info.
Cosine Calculator
Compute cos(θ) in degrees, radians, or gradians. Shows exact values for common angles, unit-circle visualization, and related angle info.
Tangent Calculator
Calculate tan(θ) with exact values for canonical angles, a live unit-circle visualisation, the y = tan(θ) curve with asymptotes, and step-by-step working.
Cotangent Calculator
Compute cot(θ) in degrees, radians, or gradians with exact values, unit-circle geometry, a waveform chart, and step-by-step output.
Arcsin Calculator
Compute arcsin(x) in degrees, radians, π-form, or gradians with a live unit circle.
Arccos Calculator
Calculate arccos(x) = cos⁻¹(x) with exact values, domain validation, results in degrees and radians.
Arctan Calculator
Calculate arctan(x) = tan⁻¹(x) with exact values, results in degrees and radians, all real inputs accepted.
Logarithm Calculator
Calculate log base b of x with change-of-base formula, exponential form, and step-by-step solution.
Natural Logarithm Calculator
Calculate ln(x) = log base e of x with exact values, exponential form, and common values reference.
Common Logarithm Calculator
Compute log₁₀(x), invert to find x, or change base. Live formula playground with reference values.
Standard Deviation Calculator
Calculate population and sample standard deviation with step-by-step deviation table, variance, and full statistics.
Mean, Median, Mode Calculator
Compute mean, median, mode, range, variance, standard deviation, and percentiles for any dataset, with histogram and step-by-step explanations.
Probability Calculator
Compute single-event, combined, and conditional probabilities, plus dice and coin presets.
Z-Score Calculator
Calculate z-score, percentile, and cumulative probability with step-by-step and z-score lookup table.
Confidence Interval Calculator
Compute Z- and T-based confidence intervals with margin of error, critical value, and an interactive visualization.
Permutation & Combination Calculator
Calculate permutations (nPr) and combinations (nCr) — with or without repetition — for any n and r.
Sample Size Calculator
Calculate the sample size needed for surveys and studies given confidence level, margin of error, expected proportion, and population size.
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