Math calculators

Calculate percentages three ways: percent of a number, what percent one number is of another, or percent change.

Calculate the sale price, savings, and final total (with optional tax) on a discounted item.

Add, subtract, multiply, divide, and simplify fractions with step-by-step educational outputs.

Calculate percentage increase, decrease, absolute change, and multiplier from old and new values.

Simplify ratios, scale quantities, and compare proportional relationships.

Calculate mean, weighted average, total, and count-based average from grouped values.

Solve quadratic equations using discriminant, roots, vertex, and factorization context.

Check whether matrix operations are dimensionally valid and estimate resulting matrix shape.

Calculate vector projection magnitude, component, angle context, and orthogonal residual.

Translate logarithmic changes into multiplicative meaning for pH, decibels, earthquakes, and growth.

Estimate percent error and order-of-magnitude difference between measured scientific notation values.

Estimate interval coverage, gap risk, and boundary inclusion for piecewise function definitions.

Convert degrees, radians, quadrant, reference angle, and trigonometric sign patterns for study.

Estimate left-hand, right-hand, and two-sided limit behavior from near-point values.

Determine significant figures, rounding result, and reporting precision for measured values.

Estimate order-of-magnitude difference, power-of-ten scale, and approximation class.

Check length, mass, and time exponents in a proposed formula for dimensional consistency.

Calculate dot product, vector magnitudes, cosine similarity, and angle between vectors.

Calculate 3D cross product, magnitude, area interpretation, and orthogonality checks.

Calculate determinant, invertibility signal, area scale factor, and inverse denominator.

Calculate inverse matrix entries, determinant, and singular-matrix warning for 2x2 matrices.

Estimate eigenvalues from trace, determinant, discriminant, and stability interpretation.

Solve two linear equations using determinant method and classify unique, parallel, or dependent systems.

Estimate Cauchy-style root bounds from polynomial coefficients for algebra study.

Calculate nth term, common difference, partial sum, and sequence position.

Calculate nth term, common ratio, finite sum, and growth-decay interpretation.

Apply the power rule to estimate derivative coefficient, exponent change, and slope at x.

Apply the power rule for antiderivatives and estimate definite integral over an interval.

Estimate the next Newton-Raphson iteration from function value, derivative, and current guess.

Evaluate scientific expressions, exponents, roots, logarithms, trigonometric functions, and precision-aware notation.

Generate bounded random integers or decimal values with repeatable range rules and selection constraints.

Solve triangle side, angle, area, perimeter, and height relationships from valid geometric inputs.