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Math & Conversion

Solve percentages, fractions, averages, equations and conversions with free, easy math calculators.

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Percentage Calculator

Solve any percentage problem - what is X% of Y and more

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Percentage Increase Calculator

Calculate percent increase between two numbers

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Percentage Change Calculator

Calculate the percent change and difference between values

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Discount Calculator

Calculate the sale price and amount saved

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Fraction Calculator

Add, subtract, multiply and divide fractions

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Scientific Calculator

A full scientific calculator with trig, logs and more

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GPA Calculator

Calculate your grade point average (weighted or unweighted)

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Quadratic Formula Calculator

Solve quadratic equations with the quadratic formula

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Average Calculator

Calculate the mean, median and mode of numbers

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Ratio Calculator

Simplify, scale and solve ratios and proportions

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Exponent Calculator

Raise numbers to any power

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Square Root Calculator

Find the square root of any number

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Standard Deviation Calculator

Calculate standard deviation, variance and mean

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Slope Calculator

Find the slope and equation of a line from two points

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Distance Calculator

Calculate the distance between two coordinate points

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Area Calculator

Calculate the area of common shapes

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Grade Calculator

Calculate your class grade and final exam score needed

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Unit Converter

Convert length, weight, temperature, volume and more

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GCF Calculator

Find the greatest common factor of numbers

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LCM Calculator

Find the least common multiple of numbers

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Scientific Notation Calculator

Convert numbers to and from scientific notation

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Rounding Calculator

Round numbers to any decimal place

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Significant Figures Calculator

Count and round to significant figures

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Decimal to Fraction Calculator

Convert a decimal to a simplified fraction

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Long Division Calculator

Solve long division with step-by-step work

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Logarithm Calculator

Calculate log and natural log of any number

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Pythagorean Theorem Calculator

Solve for any side of a right triangle

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Triangle Calculator

Solve triangle sides, angles and area

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Circle Calculator

Calculate area, circumference, radius and diameter

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Volume Calculator

Calculate the volume of common 3D shapes

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Perimeter Calculator

Calculate the perimeter of common shapes

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Factorial Calculator

Calculate the factorial of a number (n!)

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Permutation & Combination Calculator

Calculate nPr and nCr

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Prime Factorization Calculator

Break a number into its prime factors

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Binary Calculator

Convert and do math with binary numbers

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Percent Error Calculator

Calculate percent error between values

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Z-Score Calculator

Calculate the z-score of a value

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Probability Calculator

Calculate the probability of events

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Midpoint Calculator

Find the midpoint between two points

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Trigonometry Calculator

Calculate sine, cosine, tangent and inverse

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kg to Pounds Converter

Convert kilograms to pounds and back

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cm to Feet Converter

Convert centimeters to feet and inches

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Miles to km Converter

Convert miles to kilometers and back

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Celsius to Fahrenheit Converter

Convert temperature between C and F

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Feet to Meters Converter

Convert feet to meters and back