Math Calculators

Percentage calculator, fraction converter, area calculator, and more.

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Showing 59 of 59 calculators

Percentage Calculator

Calculate percentages easily with our free online tool. Find what percent of a number is, percentage increase, decrease, and more in one calculator.

Percentage Change

Calculate the percentage change between two values instantly, showing both the percent and absolute difference.

Percentage Increase

Calculate the result after increasing a value by a given percentage, showing both the new value and the increase amount.

Percentage Decrease

Calculate the result after decreasing a value by a given percentage, showing both the new value and the reduction amount.

Percentage Difference

Calculate the percentage difference between two values using the average of both as the reference base.

Fraction to Decimal

Convert any fraction to its decimal equivalent instantly by dividing the numerator by the denominator.

Square Root

Calculate the square root of any positive number instantly with this free online square root calculator.

Exponent Calculator

Calculate the result of raising a base to any exponent, supporting positive, negative, and fractional powers.

Logarithm Calculator

Calculate logarithms for any base including common log (base 10), natural log (ln), and binary log (base 2).

Factorial Calculator

Calculate the factorial of any non-negative integer from 0 to 170 instantly with this free online tool.

GCF Calculator

Find the greatest common factor of two numbers using the Euclidean algorithm with this free calculator.

LCM Calculator

Find the least common multiple of two numbers quickly using the GCF-based method with this free tool.

Proportion Solver

Solve proportions by cross-multiplication. Enter three known values and find the missing fourth value instantly.

Long Division

Perform long division to find the quotient, remainder, and full decimal result for any dividend and divisor.

Combination (nCr)

Calculate the number of combinations when choosing r items from n total items, where order does not matter.

Permutation (nPr)

Calculate the number of permutations when arranging r items from n total items, where order matters.

Probability Calculator

Calculate the probability of an event as a fraction, decimal, and percentage from favorable and total outcomes.

Z-Score Calculator

Calculate the z-score (standard score) given a value, mean, and standard deviation to measure deviations from the mean.

Pythagorean Theorem

Calculate the missing side of a right triangle using the Pythagorean theorem a² + b² = c².

Quadratic Formula

Solve any quadratic equation ax²+bx+c=0 using the quadratic formula, showing both roots and the discriminant.

Slope Calculator

Calculate the slope, y-intercept, and distance between two coordinate points on a line.

Slope Intercept Form

Calculate the slope-intercept equation of a line given slope and y-intercept, with x-intercept included.

Distance Formula

Calculate the distance between two points in a 2D coordinate plane using the distance formula.

Midpoint Calculator

Calculate the midpoint between two coordinate points by averaging their x and y values.

Triangle Area

Calculate the area and perimeter of a triangle using base and height with this free online calculator.

Circle Area

Calculate the area, circumference, and diameter of a circle from its radius using standard formulas.

Circumference

Calculate the circumference, area, and diameter of a circle from its radius with this free calculator.

Cylinder Calculator

Calculate the volume, surface area, and lateral area of a cylinder given its radius and height.

Cone Calculator

Calculate the volume, surface area, and slant height of a cone given its radius and height.

Sphere Calculator

Calculate the volume and surface area of a sphere given its radius with this free online tool.

Rectangle Calculator

Calculate the area, perimeter, and diagonal of a rectangle given its length and width.

Right Triangle

Calculate all sides, angles, area, and perimeter of a right triangle from two known sides.

Circle Calculator

Calculate all properties of a circle from its radius: area, circumference, and diameter in one tool.

Ratio Calculator

Simplify a ratio to its lowest terms and find equivalent ratios using GCF-based simplification.

Rounding Calculator

Round any number to a specified number of decimal places using standard rounding rules.

Scientific Notation

Convert numbers to and from scientific notation, showing the coefficient and power of 10.

Sample Size

Calculate the required sample size for a survey given confidence level, margin of error, and population proportion.

Quadratic Equation

Solve quadratic equations showing roots, discriminant, vertex, and axis of symmetry with step-by-step detail.

GCD Calculator

Find the greatest common divisor and least common multiple of two numbers using the Euclidean algorithm.

Combinatorics

Calculate permutations and combinations for n items taken r at a time with this comprehensive tool.

Cross Product

Calculate the cross product of two 3D vectors, including the resulting vector magnitude and direction.

Dot Product

Calculate the dot product of two vectors and the angle between them in both 2D and 3D space.

Modular Arithmetic

Calculate the remainder when dividing one number by another using the modulo operation.

Aspect Ratio

Calculate the aspect ratio and find missing dimensions when scaling width and height proportionally.

PPI Calculator

Calculate the pixel density (PPI) of a display from its resolution and physical screen diagonal size.

Determinant (2x2)

Calculate the determinant of a 2x2 matrix using the formula ad - bc with this free online tool.

Line Equation

Find the equation of a line from two points, showing slope-intercept, point-slope, and standard forms.

Fibonacci Calculator

Calculate the nth Fibonacci number and the golden ratio approximation using Binet's formula.

Prime Factorization

Find all prime factors of any positive integer and check if the number is prime.

RGB to Hex

Convert RGB color values (0-255) to their hexadecimal color code equivalent for web design.

Fraction Calculator

Perform arithmetic on two fractions: add, subtract, multiply, or divide and get the decimal result.

Decimal to Fraction

Convert a decimal number to a fraction by finding the nearest simple fraction representation.

Area Calculator

Calculate the area and perimeter of a rectangle from its length and width dimensions.

Volume Calculator

Calculate the volume and surface area of a rectangular box given its length, width, and height.

Surface Area

Calculate the total surface area and volume of a rectangular prism from its three dimensions.

Triangle Calculator

Calculate the area, perimeter, and hypotenuse of a triangle given two sides and the included angle.

Complex Numbers

Perform arithmetic on two complex numbers (a+bi), showing the sum, product, and magnitudes.

Significant Figures

Round a number to a specified number of significant figures for scientific precision.

Sci Notation Converter

Convert between standard numbers and scientific notation, with engineering notation included.