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Math Calculators
Explore 30 free tools in the math calculators section. Each page includes a working calculator, a short explanation, usage steps, and related tools you may also find helpful.
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Percentage Calculator
Free percentage calculator for percentage of a number, percent increase, and percent decrease style math. Useful for school, finance, shopping, and everyday calculations.
Percent Change Calculator
Use this percent change calculator to get a fast estimate with inputs designed for US and global English-speaking users.
Percentage Of Total Calculator
Use this percentage of total calculator to get a fast estimate with inputs designed for US and global English-speaking users.
Fraction Calculator
Use this fraction calculator to get a fast estimate with inputs designed for US and global English-speaking users.
Ratio Calculator
Use this ratio calculator to get a fast estimate with inputs designed for US and global English-speaking users.
Average Calculator
Use this average calculator to get a fast estimate with inputs designed for US and global English-speaking users.
Weighted Average Calculator
Use this weighted average calculator to get a fast estimate with inputs designed for US and global English-speaking users.
Probability Calculator
Use this probability calculator to get a fast estimate with inputs designed for US and global English-speaking users.
Standard Deviation Calculator
Use this standard deviation calculator to get a fast estimate with inputs designed for US and global English-speaking users.
Log Calculator
Use this log calculator to get a fast estimate with inputs designed for US and global English-speaking users.
Square Root Calculator
Use this square root calculator to get a fast estimate with inputs designed for US and global English-speaking users.
Exponent Calculator
Use this exponent calculator to get a fast estimate with inputs designed for US and global English-speaking users.
Factorial Calculator
Use this factorial calculator to get a fast estimate with inputs designed for US and global English-speaking users.
LCM Calculator
Use this lcm calculator to get a fast estimate with inputs designed for US and global English-speaking users.
GCD Calculator
Use this gcd calculator to get a fast estimate with inputs designed for US and global English-speaking users.
Percentage Increase Calculator
Calculate percentage increase from an old value to a new value.
Percentage Decrease Calculator
Calculate percentage decrease from an old value to a new value.
Ratio to Percentage Calculator
Convert a ratio into a percentage using a numerator and denominator.
Decimal to Percent Calculator
Convert a decimal number into a percentage.
Percent to Decimal Calculator
Convert a percentage into decimal form.
Circle Area Calculator
Calculate the area of a circle from its radius.
Circle Circumference Calculator
Calculate the circumference of a circle from its radius.
Rectangle Area Calculator
Calculate the area of a rectangle from length and width.
Triangle Area Calculator
Calculate the area of a triangle from base and height.
Pythagorean Theorem Calculator
Calculate the hypotenuse using the Pythagorean theorem.
Slope Calculator
Calculate the slope between two coordinate points.
Distance Formula Calculator
Calculate the distance between two coordinate points.
Power Function Calculator
Raise a base to a chosen exponent power.
Cube Root Calculator
Calculate the cube root of a number.
Density Calculator
Calculate density from mass and volume.