Math Calculators
Percentages, fractions, ratios and proportions, factors and primes, the area and volume of shapes, rounding and averages — every answer with the steps shown.
80 calculators · A–Z of all calculators
- Percentage CalculatorPercent of a number, what percent, percent change and more, with steps.
- Fraction CalculatorAdd, subtract, multiply and divide fractions and mixed numbers.
- Ratio CalculatorSimplify a ratio or scale it to find the missing number.
- Aspect Ratio CalculatorRatio of any size, or resize at a ratio.
- Proportion CalculatorSolve A/B = C/D for the missing value, with the steps.
- LCM and GCF CalculatorLeast common multiple and greatest common factor, with prime factors.
- Factor CalculatorAll factors, prime factorization and whether a number is prime.
- Average CalculatorMean, median, mode, range and standard deviation of a list.
- Weighted Average CalculatorWeighted mean of values and their weights.
- Geometric Mean CalculatorGeometric, harmonic and arithmetic mean.
- Rounding CalculatorRound to decimal places, the nearest 10, 100 or 1,000, or sig figs.
- Square Root CalculatorSquare, cube and nth roots, simplified radicals and powers.
- Simplify Radicals CalculatorSquare and cube roots in simplest form.
- Random Number GeneratorRandom whole numbers in any range, with or without repeats.
- Area CalculatorArea of rectangles, triangles, circles, trapezoids and more.
- Volume CalculatorVolume of boxes, cylinders, spheres, cones and pyramids.
- Binary ConverterBinary, decimal, hex and octal, exact for big numbers.
- Number Base ConverterAny base from 2 to 36.
- Scientific CalculatorTrig in degrees or radians, logs, powers, roots and factorials.
- Exponent CalculatorPowers with negative and fractional exponents, or the missing base.
- Log CalculatorLog base 10, natural log (ln), log base 2 or any base.
- Exponential Growth CalculatorGrowth or decay by a percent per period.
- Golden Ratio CalculatorSplit a length in the golden ratio.
- Quadratic Formula CalculatorRoots of ax² + bx + c = 0, the discriminant and the vertex.
- Cubic Equation CalculatorAll three roots of a cubic, real or complex.
- Synthetic Division CalculatorDivide a polynomial by x − c.
- Complex Number CalculatorMultiply, divide and convert a + bi numbers.
- Pythagorean Theorem CalculatorHypotenuse or missing side of a right triangle, with the steps.
- Trigonometry Calculatorsin, cos, tan and exact values of any angle.
- Triangle CalculatorEvery side and angle, area and perimeter from three values.
- Circle CalculatorArea, circumference, radius and diameter from any one of them.
- Ellipse CalculatorPerimeter, area, eccentricity and foci.
- Distance Formula CalculatorDistance, midpoint and slope between two points.
- Midpoint CalculatorMidpoint of two points, or the missing endpoint.
- Line Equation CalculatorEquation of a line through two points.
- Degrees Minutes Seconds CalculatorDMS to decimal degrees and back.
- Distance Between Coordinates CalculatorGreat-circle distance from latitude and longitude.
- Scientific Notation CalculatorScientific, E and engineering notation, and back to decimals.
- Percent Error CalculatorPercent error of a measurement.
- Matrix CalculatorDeterminant, inverse, transpose and products.
- Vector CalculatorDot and cross products, magnitude and angle.
- System of Equations CalculatorSolve 2 or 3 linear equations as you write them.
- Sequence CalculatorArithmetic and geometric nth term and sum.
- Surface Area CalculatorSurface area of cylinders, spheres, cones and boxes.
- Right Triangle CalculatorEvery side and angle from any two values.
- Number to Words ConverterNumbers and check amounts written out in words.
- Fraction to Percent CalculatorFractions, decimals and percents, any direction.
- Prime Number CalculatorIs it prime? Nearest primes and primes in a range.
- Arc Length CalculatorArc length, sector area and chord of a circle.
- Polygon CalculatorAngles and area of a regular polygon.
- Polygon Area from CoordinatesShoelace formula area from x, y points.
- Significant Figures CalculatorCount sig figs and round to any number of them.
- Decimal to Fraction CalculatorDecimals to fractions exactly, repeating ones too, and back.
- Long Division CalculatorQuotient and remainder with every step shown.
- Modulo Calculatora mod n — the remainder, for any size.
- Roman Numeral ConverterNumbers to Roman numerals and back, 1 to 3,999.
- Factorial CalculatorExact n! up to 5,000, with digits and zeros.
- Linear Interpolation CalculatorA value between two known points.
- Polar Coordinates CalculatorRectangular to polar and back.
- Pascal’s Triangle CalculatorAny row and entry, exact.
- Parabola CalculatorVertex, focus, directrix and latus rectum.
- Circle Equation CalculatorStandard ↔ general form, center and radius.
- Hyperbola CalculatorCenter, vertices, foci and asymptotes.
- Completing the Square CalculatorVertex form and roots, step by step.
- Fibonacci Calculatorn-th term, sum, list and Fibonacci test.
- Polynomial CalculatorAdd, subtract, multiply and divide polynomials, with steps.
- Derivative CalculatorDerivative of f(x) with the rules shown, plus its value at a point.
- Integral CalculatorDefinite integrals with an error estimate, and antiderivatives.
- Equation SolverSolve an equation in one unknown, with steps and a check.
- Summation CalculatorSigma notation: exact sum, series formulas, partial sums.
- Taylor Series CalculatorTaylor and Maclaurin polynomials with exact coefficients and error.
- Partial Fractions CalculatorDecompose a rational function, with steps and an exact check.
- Collatz Sequence CalculatorThe 3n + 1 sequence: steps to reach 1, peak value, stopping time and the longest chain below a limit.
- Magic Square CalculatorBuild a magic square of any order from 3 to 30 and check your own grid against the magic constant.
- Law of Sines CalculatorSolve AAS, ASA and the ambiguous SSA case: 0, 1 or 2 triangles.
- Linear Programming CalculatorMax or min of a two-variable objective by the corner-point method.
- Binomial Expansion CalculatorExpand (ax + b)^n, find the k-th term or the coefficient of x^m.
- Inequality SolverLinear, quadratic, rational and absolute value inequalities in interval notation.
- Asymptote CalculatorVertical, horizontal and slant asymptotes, holes and intercepts.
- Conic Section CalculatorIdentify the conic in Ax² + Bxy + Cy² + Dx + Ey + F = 0; rotate and find foci.