Math
Category
Math Calculators
From quick percentage checks to geometry and scientific functions, these math tools keep formulas visible so you can reconcile with a textbook. Browse percentages, averages, algebra solvers, circle and Pythagoras helpers, a scientific calculator, simple graphing, interactive 3D surfaces, vector addition, and practical frustum tools. Defaults are homework-friendly; change any field to explore how outputs move. Ideal for students, tutors, and anyone who wants labeled inputs instead of a mystery result.
70 tools in this category — each page includes how-to steps, a worked example, formula notes, and FAQs.
- Students checking homework steps against a clear formula note
- Teachers demonstrating geometry and trig identities
- Anyone exploring 3D surfaces or simple graphs interactively
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Popular in Math
- Percentage CalculatorQuick percentage of a number — useful for tips, discounts, and taxes.
- Scientific CalculatorCommon scientific operations: sin, cos, tan, log, ln, sqrt, and more.
- Pythagoras Theorem CalculatorFind the hypotenuse or either leg of a right triangle; optional 3D space diagonal.
- Quadratic Equation SolverSolve ax² + bx + c = 0 with clear real or complex roots and discriminant.
- 3D Function PlotterInteractive 3D surface for z = sin(√(x²+y²)) and related demos.
- 3D Vector AdditionSum, magnitudes, dot product, and angle between two 3D vectors — with interactive arrow view.
- Cone / Frustum (3D)Volume and lateral area of a cone or frustum — with interactive 3D mesh (set top radius to 0 for a full cone).
- Simple Graphing CalculatorPlot sin, cos, exp, or a quadratic over a chosen x-range.
- Unit Circle CalculatorSine, cosine, tangent and coordinates for an angle on the unit circle.
All Math tools
Showing 70 of 70
- Basic CalculatorAdd, subtract, multiply, and divide two numbers.
- Scientific CalculatorCommon scientific operations: sin, cos, tan, log, ln, sqrt, and more.
- Fraction CalculatorSimplify fractions and compute sum, difference, product, or quotient.
- Percentage ChangeCalculate percent increase or decrease between two values.
- Percentage OfFind what percent one number is of another, or X% of Y.
- Average / Mean / Median / ModeCompute mean, median, and mode from a list of numbers.
- Ratio CalculatorSimplify a ratio and scale it to a target total or part.
- GCF / LCM CalculatorFind the greatest common factor and least common multiple of two integers.
- Prime Number CheckerCheck whether an integer is prime.
- Quadratic Equation SolverSolve ax² + bx + c = 0 for real roots.
- Age CalculatorCalculate exact age in years, months, and days from a birth date.
- Factorial CalculatorCompute n! for non-negative integers (up to 170).
- Logarithm CalculatorCompute log base 10, natural log, or custom base.
- Pythagoras Theorem CalculatorFind the hypotenuse or either leg of a right triangle; optional 3D space diagonal.
- Triangle Area (Heron's Formula)Compute triangle area from three side lengths using Heron's formula.
- Distance Formula CalculatorEuclidean distance between two points on a plane.
- Slope CalculatorSlope (rise/run) of the line through two points, plus angle.
- Circle CalculatorArea, circumference, and diameter from radius.
- Sphere Volume & SurfaceVolume and surface area of a sphere from radius.
- Cylinder CalculatorVolume and surface area of a right circular cylinder.
- Multi-Step Percentage ChangeApply a sequence of percent increases/decreases and see the overall change.
- Permutation & CombinationCompute P(n,r) and C(n,r) for counting problems.
- Fibonacci nth TermCompute the nth Fibonacci number (0-indexed: F0=0, F1=1).
- 2×2 Matrix DeterminantCompute the determinant of a 2×2 matrix [[a,b],[c,d]].
- Binomial Probability CalculatorP(X = k) for a binomial distribution with n trials and success probability p.
- Triangle Sides & Angles SolverSolve a triangle from SSS, SAS, or two angles + a side using laws of sines/cosines.
- Percentage Calculator (Mega)One tool for: what is X% of Y, X is what % of Y, and percent change.
- Roman Numerals ConverterConvert between Arabic numbers (1–3999) and Roman numerals.
- Base ConverterConvert integers between binary, octal, decimal, and hexadecimal.
- Nth Root CalculatorCompute square root, cube root, or any nth root of a number.
- Exponent CalculatorRaise a base to a power (a^b).
- Trapezoid Area CalculatorArea of a trapezoid from parallel sides and height.
- Cone Volume CalculatorVolume of a right circular cone from radius and height.
- Pyramid Volume CalculatorVolume of a pyramid from base area and height.
- Angle Converter (Deg ↔ Rad)Convert angles between degrees and radians.
- Rectangle Area & PerimeterArea and perimeter of a rectangle.
- 3D Distance CalculatorEuclidean distance between two points in 3D space.
- Vector Magnitude CalculatorLength (magnitude) of a 2D or 3D vector.
- Matrix Multiply 2×2Multiply two 2×2 matrices (row-major entries).
- Matrix Multiply 3×3Multiply two 3×3 matrices (9 comma-separated values each, row-major).
- Complex Number CalculatorAdd or multiply two complex numbers; see magnitude and argument.
- Series Sum CalculatorSum of arithmetic or geometric series for n terms.
- Arithmetic Sequence TermFind the nth term of an arithmetic sequence.
- Geometric Sequence TermFind the nth term of a geometric sequence.
- Numeric DerivativeApproximate f′(x) with a central difference for common functions.
- Numeric IntegralTrapezoidal rule integral of common functions on [a, b].
- Unit Circle CalculatorSine, cosine, tangent and coordinates for an angle on the unit circle.
- Radians ↔ DegreesConvert angles between radians and degrees.
- Scientific Notation ConverterExpress a number as a × 10^n.
- Simple Graphing CalculatorPlot sin, cos, exp, or a quadratic over a chosen x-range.
- 3D Pythagoras / Space Diagonal2D hypotenuse and optional 3D rectangular box space diagonal — with 3D view.
- 3D Function PlotterInteractive 3D surface for z = sin(√(x²+y²)) and related demos.
- 3D Sphere GeometryVolume and surface area with an interactive 3D sphere.
- 3D Cylinder GeometryCylinder volume and surface with interactive 3D preview.
- Significant Figures RounderRound a number to a chosen count of significant figures.
- Quadratic Equation SolverSolve ax² + bx + c = 0 with clear real or complex roots and discriminant.
- Average CalculatorMean, median, and mode from a list of numbers.
- Weighted Average CalculatorCompute a weighted mean from value,weight pairs.
- Binary Hex ConverterConvert among decimal, binary, and hexadecimal integers.
- Roman Numeral ConverterConvert integers 1–3999 to Roman numerals and back.
- Aspect Ratio CalculatorSimplify width:height ratios or find a missing side for a target ratio.
- Factorial CalculatorCompute n! for non-negative integers with a safe upper limit.
- Random Number GeneratorGenerate a list of random integers between min and max (client-side).
- Scientific Notation Converter (bidirectional)Convert a decimal to a*10^b or rebuild a decimal from coefficient and exponent — bidirectional.
- 3D Vector AdditionSum, magnitudes, dot product, and angle between two 3D vectors — with interactive arrow view.
- Cone / Frustum (3D)Volume and lateral area of a cone or frustum — with interactive 3D mesh (set top radius to 0 for a full cone).
- Pyramid Volume (3D)Square or rectangular pyramid volume, lateral area, and total surface — with 3D pyramid.
- Torus Volume (3D)Torus (doughnut) volume and surface from major and minor radii — with interactive 3D torus.
- Million / Billion ConverterConvert a large number into thousands, millions, billions, trillions, scientific notation, and plain words.
- Decimal to Fraction CalculatorConvert a decimal to a simplified fraction, with optional max denominator for approximations.
Related categories
- StatisticsMean, median, mode, standard deviation, combinations/permutations, and classical probability helpers for homework and quick exploratory checks.
- Science & EngineeringOhm’s law, kinetics, speed/distance/time, energy, and other textbook physics/engineering helpers with SI-friendly inputs for class and lab checks.
- EducationFinal grade needed, grade percentage, GPA-style helpers, and study-friendly math — match your syllabus weights before trusting a target score.
Looking for walkthroughs? See our guides on compound interest, EMI, mortgage, BMI, and percentage / tip / tax — or browse all calculators.