Math Calculators

Percentage Calculator

Calculate what percentage one number is of another instantly. Enter a value and total to find the percentage.

Percentage Change Calculator

Calculate the percentage change between two values. Find the percent increase or decrease from an old value to a new value.

Percentage Of Calculator

Find what a specific percentage of any number is. Calculate X% of Y quickly and accurately.

Percentage Increase Calculator

Increase any number by a given percentage. Find the result of adding X% to a value.

Fraction Calculator

Add, subtract, multiply, and divide fractions. Get simplified results with step-by-step solutions.

Fraction to Decimal Converter

Convert any fraction to its decimal equivalent. Enter a numerator and denominator to get the decimal value.

Decimal to Fraction Converter

Convert any decimal number to a simplified fraction. Enter a decimal to get the numerator and denominator.

Simplify Fraction Calculator

Reduce any fraction to its simplest form. Enter a numerator and denominator to get the simplified fraction.

Quadratic Equation Solver

Solve any quadratic equation ax² + bx + c = 0. Find both roots using the quadratic formula with the discriminant.

Slope Calculator

Calculate the slope of a line between two points. Enter coordinates (x₁,y₁) and (x₂,y₂) to find the slope.

Midpoint Calculator

Find the midpoint between two points on a coordinate plane. Enter two coordinate pairs to get the midpoint.

Distance Between Points Calculator

Calculate the distance between two points on a coordinate plane using the distance formula.

Circle Area Calculator

Calculate the area and circumference of a circle from its radius. Free circle calculator with step-by-step formula.

Triangle Area Calculator

Calculate the area of a triangle from its base and height. Simple and accurate triangle area formula.

Rectangle Area & Perimeter Calculator

Calculate the area and perimeter of a rectangle. Enter length and width to get instant results.

Pythagorean Theorem Calculator

Calculate the hypotenuse of a right triangle using the Pythagorean theorem. Enter sides a and b to find c.

Sphere Volume & Surface Area Calculator

Calculate the volume and surface area of a sphere from its radius. Free sphere calculator with formulas.

Sin Cos Tan Calculator

Calculate sine, cosine, and tangent of any angle in degrees or radians. Free online trig calculator with instant results.

Degrees to Radians Converter

Convert degrees to radians instantly. Free online angle converter with formula explanation and common angle values.

Radians to Degrees Converter

Convert radians to degrees instantly. Free online angle converter with formula and common radian values.

Average Calculator

Calculate mean, median, and mode from any set of numbers. Free statistics calculator with step-by-step results.

Standard Deviation Calculator

Calculate standard deviation, variance, and mean for any dataset. Free online statistics calculator with formulas.

Combination Calculator (nCr)

Calculate combinations (nCr) — how many ways to choose r items from n. Free combination calculator with formula and examples.

Permutation Calculator (nPr)

Calculate permutations (nPr) — how many ways to arrange r items from n. Free permutation calculator with formula and examples.

GCD Calculator

Find the greatest common divisor (GCD) of two numbers using the Euclidean algorithm. Free online GCD calculator.

LCM Calculator

Find the least common multiple (LCM) of two numbers. Free online LCM calculator using the GCD method.

Prime Number Checker

Check if a number is prime and find its factors. Free online prime number checker with instant results.

Factorial Calculator

Calculate the factorial of any number. Free factorial calculator for math, combinatorics, and probability.

Binary to Decimal Converter

Convert binary numbers to decimal instantly. Free online base-2 to base-10 converter with examples.

Decimal to Binary Converter

Convert decimal numbers to binary instantly. Free online base-10 to base-2 converter with step-by-step explanation.

Hex to Decimal Converter

Convert hexadecimal numbers to decimal instantly. Free online hex to base-10 converter for programmers and students.

Decimal to Hex Converter

Convert decimal numbers to hexadecimal instantly. Free online base-10 to hex converter for programmers.

Roman Numeral Converter

Convert numbers to Roman numerals instantly. Free online converter supporting values from 1 to 3999.

Scientific Notation Calculator

Convert any number to scientific notation. See coefficient, exponent, and formatted notation instantly.

Logarithm Calculator

Calculate logarithms with any base. Compute log base 2, 10, e, or any custom base. Free online log calculator.

Square Root Calculator

Calculate the square root of any number instantly. Free online calculator with explanation and perfect square detection.

Exponent Calculator

Calculate any number raised to any power. Free exponent calculator for math, science, and engineering.