Free Online Calculators
Finance, math, health, construction, and everyday tools in one searchable catalog.
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Quadratic Graphing Calculator — Vertex, Roots & Steps
Fraction Calculator — Mixed Numbers, Steps & Visuals
Scientific & Graphing Calculator — DEG/RAD, History & Memory
Confidence Interval Calculator
Derivative Calculator
Eigenvalue & Eigenvector Calculator
GCF and LCM Calculator
Linear Regression Calculator
Long Division Calculator
Matrix Calculator
P-Value Calculator
Polynomial Long Division Calculator
Calculator descriptions
Quadratic Graphing Calculator — Vertex, Roots & Steps
Type a quadratic function to graph and solve it instantly, or edit standard, vertex and root forms. Trace the parabola and see roots, vertex, domain, range and steps.
Fraction Calculator — Mixed Numbers, Steps & Visuals
Calculate, simplify, convert, compare, and order exact fractions; generate equivalents and LCD forms or explore an interactive fraction wall.
Scientific & Graphing Calculator — DEG/RAD, History & Memory
Evaluate safe scientific expressions with DEG or RAD mode, memory, history, result formatting, and an interactive graph for up to three functions.
Confidence Interval Calculator
Estimate a population mean or proportion from your sample. Use raw data, summary statistics or success counts, and compare confidence levels visually.
Derivative Calculator
Differentiate a function or implicit equation. Follow each rule, explore the curve and inspect regular, vertical or singular tangent points.
Eigenvalue & Eigenvector Calculator
Find eigenvalues, full real or complex eigenvector bases and multiplicities. Explore the transformation and check diagonalization over real and complex numbers.
GCF and LCM Calculator
Find the greatest common factor and least common multiple of several whole numbers. Explore equal chunks and repeating cycles with exact counts and steps.
Linear Regression Calculator
Fit a line to paired measurements, inspect residuals, compare mean and individual prediction intervals, and explore the influence of one point.
Long Division Calculator
Divide whole numbers and decimals with exact answers and place-value working. Follow the steps or try each quotient digit with immediate feedback.
Matrix Calculator
Calculate with exact matrices. Inspect each product cell, follow row operations and solve systems with unique, infinite or no solutions.
P-Value Calculator
Convert a z, t, chi-square or F statistic to a p-value. Inspect the selected tail and copy a reproducible result.
Polynomial Long Division Calculator
Divide polynomials exactly. Explore quotient, remainder and step-by-step subtraction in columns aligned by power, including fractions and missing terms.
