Math Calculators

Arithmetic, algebra, geometry, fractions and number theory.

53 calculators in this category.

• Basic Calculator — Evaluate an arithmetic expression with correct operator precedence.
• Circle Calculator — Find area, circumference, radius or diameter of a circle from any one measurement.
• Combination Calculator — Count unordered selections: how many ways to choose r items from n.
• Coordinate Geometry Calculator — Analyse two points at once: distance, midpoint, slope, line equation and angle.
• Cube Root Calculator — Find the cube root of any number, including negatives.
• Cubic Equation Solver — Solve ax³ + bx² + cx + d = 0 and get all three roots, real or complex.
• Decimal to Fraction Calculator — Turn any decimal into its simplest exact fraction and mixed number.
• Distance Between Two Points — Find the straight-line distance between two points in 2D or 3D space.
• Exponent Calculator — Raise any base to any power, including negative and fractional exponents.
• Factorial Calculator — Compute n! for whole numbers, with exact results for large values.
• Fraction Calculator — Add, subtract, multiply and divide two fractions, with the result fully simplified.
• Fraction to Decimal Calculator — Convert any fraction to its decimal form and detect repeating digits.
• Fraction to Percentage Calculator — Convert a fraction into a percentage and a decimal.
• GCD Calculator — Find the greatest common divisor of two or more whole numbers.
• LCM Calculator — Find the least common multiple of two or more whole numbers.
• Logarithm Calculator — Compute logarithms in any base, including natural log and log base 10.
• Mean Calculator — Find the arithmetic mean (average) of a set of numbers.
• Median Calculator — Find the middle value of a data set, plus quartiles.
• Midpoint Calculator — Find the point exactly halfway between two coordinates.
• Mixed Number Calculator — Convert between mixed numbers and improper fractions, and see the decimal.
• Mode Calculator — Find the most frequently occurring value or values in a data set.
• Modulo Calculator — Find the remainder after division, with both the programming and mathematical conventions.
• Percentage Calculator — Work out what X% of a number is, what percent one number is of another, and reverse percentages.
• Percentage Change Calculator — Measure the percentage increase or decrease between an old value and a new value.
• Percentage Decrease Calculator — Subtract a percentage from a number and see the reduction and final value.
• Percentage Difference Calculator — Compare two values of equal standing using the difference relative to their average.
• Percentage Increase Calculator — Add a percentage to a number and see the increase amount and final value.
• Permutation Calculator — Count ordered arrangements: how many ways to pick r items from n where order matters.
• Prime Factorization Calculator — Break any whole number into its prime factors with exponents.
• Prime Number Checker — Test whether a number is prime and find the nearest primes around it.
• Probability Calculator — Find single-event probability plus the odds, complement and repeated-trial chances.
• Proportion Calculator — Solve A : B = C : D for any missing value using cross multiplication.
• Pythagorean Theorem Calculator — Find any missing side of a right triangle, plus its angles, area and perimeter.
• Quadratic Equation Solver — Solve ax² + bx + c = 0, including complex roots, vertex and discriminant.
• Random Number Generator — Generate random whole numbers in a range, with or without duplicates.
• Range Calculator — Find the spread between the largest and smallest values in a data set.
• Ratio Calculator — Simplify a ratio, scale it, and solve for a missing term.
• Ratio to Percentage Calculator — Convert a ratio into percentage shares of the whole.
• Rectangle Area Calculator — Find the area, perimeter and diagonal of a rectangle or square.
• Regular Polygon Calculator — Find the area, perimeter and angles of any regular polygon.
• Roman Numeral Converter — Convert numbers to Roman numerals and Roman numerals back to numbers.
• Rounding Calculator — Round any number to decimal places, whole numbers, or the nearest multiple.
• Scientific Notation Converter — Convert between standard decimal form, scientific notation and engineering notation.
• Significant Figures Calculator — Round to a chosen number of significant figures and count the sig figs in a value.
• Slope Calculator — Find the slope, angle and equation of the line through two points.
• Square Root Calculator — Find the square root of any number, plus the simplified radical form.
• Standard Deviation Calculator — Compute standard deviation, variance, mean and the full set of descriptive statistics.
• Surface Area Calculator — Find the surface area of common 3D shapes for painting, coating or wrapping.
• Trapezoid Area Calculator — Find the area of a trapezoid from its two parallel sides and height.
• Triangle Area Calculator — Find a triangle's area from base and height, three sides, or two sides and the angle between.
• Variance Calculator — Calculate population and sample variance for a data set.
• Volume Calculator — Find the volume of a box, cylinder, sphere, cone, pyramid or capsule.
• Weighted Average Calculator — Average values where each carries a different weight or importance.