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Math
General-purpose number tools for percentages, ratios, statistics, random values, and quick calculations.
Category intro
Why browse math tools here
The math section on QuickTools covers percentages, statistics, sequences, geometry, random values, and everyday number checks. This hub includes 83 focused tool pages built to solve one job at a time without sending people into a spreadsheet or a heavyweight app.
Students, analysts, teachers, and anyone checking numbers quickly can use this category when they need a fast answer for fast math, percentage work, and number analysis. Popular pages in this section include Percentage Calculator, Average Calculator, and Median Calculator.
Popular math tools
Percentage Calculator
Calculate percentages, reverse percentages, and percent change.
- Calculate a percentage of any number instantly.
- Compare two values for increase or decrease.
Average Calculator
Find the average, sum, minimum, and maximum of a number list.
- Calculate the mean of a custom list quickly.
- See the sum, minimum, and maximum at the same time.
Median Calculator
Calculate the median of a number list and review the sorted values.
- Calculate the median of a number list and review the sorted values.
- Use this median calculator for scores, measurements, and number sets when you need the middle value instead of the average.
Mode Calculator
Find the most frequent value or values in a number list.
- Find the most frequent value or values in a number list.
- Use this mode calculator to identify repeated values in survey results, scores, measurements, and simple frequency checks.
Standard Deviation Calculator
Calculate population or sample standard deviation from a number list.
- Calculate population or sample standard deviation from a number list.
- Use this standard deviation calculator to understand how spread out a set of numbers is around the mean.
Ratio Calculator
Simplify a ratio and express it as a decimal or percentage.
- Simplify a ratio and express it as a decimal or percentage.
- Use this ratio calculator for scale comparisons, proportions, and basic math checks when two values need a cleaner relationship.
Fraction Calculator
Add, subtract, multiply, or divide fractions and see the decimal result too.
- Add, subtract, multiply, or divide fractions and see the decimal result too.
- Use this fraction calculator when you need quick fraction math without switching between fraction and decimal forms by hand.
Percentage Increase Calculator
Measure percentage increase from an original value to a higher new value.
- Measure percentage increase from an original value to a higher new value.
- Use this percentage increase calculator for price changes, growth rates, score changes, and quick before-and-after comparisons.
Percentage Decrease Calculator
Measure percentage decrease from an original value to a lower new value.
- Measure percentage decrease from an original value to a lower new value.
- Use this percentage decrease calculator for markdowns, declines, and quick comparisons when a value drops over time.
Scientific Calculator
Evaluate scientific expressions with common functions, constants, and operators.
- Evaluate scientific expressions with common functions, constants, and operators.
- Use this scientific calculator for quick expression checks with powers, roots, logarithms, and trigonometric functions.
Prime Number Checker
Check whether a whole number is prime and review its factor breakdown.
- Check whether a whole number is prime and review its factor breakdown.
- Use this prime number checker for quick number theory checks, practice work, or simple factor exploration.
Factorial Calculator
Calculate factorial values and see a scientific notation view for large results.
- Calculate factorial values and see a scientific notation view for large results.
- Use this factorial calculator for permutations, combinations, and fast whole-number factorial checks.
GCD Calculator
Find the greatest common divisor of two or more whole numbers.
- Find the greatest common divisor of two or more whole numbers.
- Use this GCD calculator to simplify number sets, reduce fractions, and check common divisors quickly.
LCM Calculator
Find the least common multiple of two or more whole numbers.
- Find the least common multiple of two or more whole numbers.
- Use this LCM calculator for fractions, denominators, schedules, and simple number theory checks.
Equation Solver Basic
Solve a simple linear equation of the form ax + b = c.
- Solve a simple linear equation of the form ax + b = c.
- Use this basic equation solver for quick algebra checks when you want the x value and a simple substitution check.
Percentage Difference Calculator
Compare two values and measure the percentage difference between them.
- Compare two values and measure the percentage difference between them.
- Use this percentage difference calculator when you need an absolute difference and percentage gap between two values without choosing a before-and-after direction.
Square Calculator
Use this square calculator for fast browser-based number work.
- Use this square calculator for fast browser-based number work.
- Use this square calculator to measure the square of a number without opening a full scientific calculator.
Cube Calculator
Use this cube calculator for fast browser-based number work.
- Use this cube calculator for fast browser-based number work.
- Use this cube calculator to measure the cube of any number quickly.
Square Root Calculator
Use this square root calculator for fast browser-based number work.
- Use this square root calculator for fast browser-based number work.
- Use this square root calculator to measure the principal square root of a value.
Cube Root Calculator
Use this cube root calculator for fast browser-based number work.
- Use this cube root calculator for fast browser-based number work.
- Use this cube root calculator to measure the cube root of positive or negative values.
Reciprocal Calculator
Use this reciprocal calculator for fast browser-based number work.
- Use this reciprocal calculator for fast browser-based number work.
- Use this reciprocal calculator to measure the reciprocal of a non-zero number.
Absolute Value Calculator
Use this absolute value calculator for fast browser-based number work.
- Use this absolute value calculator for fast browser-based number work.
- Use this absolute value calculator to measure distance from zero regardless of sign.
Natural Log Calculator
Use this natural log calculator for fast browser-based number work.
- Use this natural log calculator for fast browser-based number work.
- Use this natural log calculator to measure the natural logarithm of a positive value.
Common Log Calculator
Use this common log calculator for fast browser-based number work.
- Use this common log calculator for fast browser-based number work.
- Use this common log calculator to measure the base-10 logarithm of a positive value.
Exponential Calculator
Use this exponential calculator for fast browser-based number work.
- Use this exponential calculator for fast browser-based number work.
- Use this exponential calculator to measure e raised to any exponent.
Degrees To Radians Calculator
Use this degrees to radians calculator for fast browser-based number work.
- Use this degrees to radians calculator for fast browser-based number work.
- Use this degrees to radians calculator to measure angle conversion from degrees to radians.
Radians To Degrees Calculator
Use this radians to degrees calculator for fast browser-based number work.
- Use this radians to degrees calculator for fast browser-based number work.
- Use this radians to degrees calculator to measure angle conversion from radians to degrees.
Sine Calculator
Use this sine calculator for fast browser-based number work.
- Use this sine calculator for fast browser-based number work.
- Use this sine calculator to measure the sine of an angle measured in degrees.
Cosine Calculator
Use this cosine calculator for fast browser-based number work.
- Use this cosine calculator for fast browser-based number work.
- Use this cosine calculator to measure the cosine of an angle measured in degrees.
Tangent Calculator
Use this tangent calculator for fast browser-based number work.
- Use this tangent calculator for fast browser-based number work.
- Use this tangent calculator to measure the tangent of an angle measured in degrees.
Inverse Sine Calculator
Use this inverse sine calculator for fast browser-based number work.
- Use this inverse sine calculator for fast browser-based number work.
- Use this inverse sine calculator to measure the inverse sine of a valid trigonometric value.
Inverse Cosine Calculator
Use this inverse cosine calculator for fast browser-based number work.
- Use this inverse cosine calculator for fast browser-based number work.
- Use this inverse cosine calculator to measure the inverse cosine of a valid trigonometric value.
Inverse Tangent Calculator
Use this inverse tangent calculator for fast browser-based number work.
- Use this inverse tangent calculator for fast browser-based number work.
- Use this inverse tangent calculator to measure the inverse tangent of a number in degrees.
Sum Of Digits Calculator
Use this sum of digits calculator for fast browser-based number work.
- Use this sum of digits calculator for fast browser-based number work.
- Use this sum of digits calculator to measure the sum of all digits in a whole number.
Digital Root Calculator
Use this digital root calculator for fast browser-based number work.
- Use this digital root calculator for fast browser-based number work.
- Use this digital root calculator to measure the repeated digit sum reduced to a single digit.
Divisor Count Calculator
Use this divisor count calculator for fast browser-based number work.
- Use this divisor count calculator for fast browser-based number work.
- Use this divisor count calculator to measure how many whole-number divisors a positive integer has.
Square Area Calculator
Use this square area calculator for quick browser-based math with clear result cards.
- Use this square area calculator for quick browser-based math with clear result cards.
- Use this square area calculator to measure the area of a square from one side length.
Square Perimeter Calculator
Use this square perimeter calculator for quick browser-based math with clear result cards.
- Use this square perimeter calculator for quick browser-based math with clear result cards.
- Use this square perimeter calculator to measure the perimeter of a square from one side length.
Rectangle Area Calculator
Use this rectangle area calculator for quick browser-based math with clear result cards.
- Use this rectangle area calculator for quick browser-based math with clear result cards.
- Use this rectangle area calculator to measure the area of a rectangle from length and width.
Rectangle Perimeter Calculator
Use this rectangle perimeter calculator for quick browser-based math with clear result cards.
- Use this rectangle perimeter calculator for quick browser-based math with clear result cards.
- Use this rectangle perimeter calculator to measure the perimeter of a rectangle from length and width.
Circle Area Calculator
Use this circle area calculator for quick browser-based math with clear result cards.
- Use this circle area calculator for quick browser-based math with clear result cards.
- Use this circle area calculator to measure the area of a circle from its radius.
Circle Circumference Calculator
Use this circle circumference calculator for quick browser-based math with clear result cards.
- Use this circle circumference calculator for quick browser-based math with clear result cards.
- Use this circle circumference calculator to measure the circumference of a circle from its radius.
Triangle Area Calculator
Use this triangle area calculator for quick browser-based math with clear result cards.
- Use this triangle area calculator for quick browser-based math with clear result cards.
- Use this triangle area calculator to measure the area of a triangle from its base and height.
Triangle Perimeter Calculator
Use this triangle perimeter calculator for quick browser-based math with clear result cards.
- Use this triangle perimeter calculator for quick browser-based math with clear result cards.
- Use this triangle perimeter calculator to measure the perimeter of a triangle from three side lengths.
Trapezoid Area Calculator
Use this trapezoid area calculator for quick browser-based math with clear result cards.
- Use this trapezoid area calculator for quick browser-based math with clear result cards.
- Use this trapezoid area calculator to measure the area of a trapezoid from both bases and height.
Parallelogram Area Calculator
Use this parallelogram area calculator for quick browser-based math with clear result cards.
- Use this parallelogram area calculator for quick browser-based math with clear result cards.
- Use this parallelogram area calculator to measure the area of a parallelogram from base and height.
Rhombus Area Calculator
Use this rhombus area calculator for quick browser-based math with clear result cards.
- Use this rhombus area calculator for quick browser-based math with clear result cards.
- Use this rhombus area calculator to measure the area of a rhombus from its diagonals.
Ellipse Area Calculator
Use this ellipse area calculator for quick browser-based math with clear result cards.
- Use this ellipse area calculator for quick browser-based math with clear result cards.
- Use this ellipse area calculator to measure the area of an ellipse from the major and minor radii.
Cube Volume Calculator
Use this cube volume calculator for quick browser-based math with clear result cards.
- Use this cube volume calculator for quick browser-based math with clear result cards.
- Use this cube volume calculator to measure the volume of a cube from one side length.
Box Volume Calculator
Use this box volume calculator for quick browser-based math with clear result cards.
- Use this box volume calculator for quick browser-based math with clear result cards.
- Use this box volume calculator to measure the volume of a rectangular box from length, width, and height.
Cylinder Volume Calculator
Use this cylinder volume calculator for quick browser-based math with clear result cards.
- Use this cylinder volume calculator for quick browser-based math with clear result cards.
- Use this cylinder volume calculator to measure the volume of a cylinder from radius and height.
Cone Volume Calculator
Use this cone volume calculator for quick browser-based math with clear result cards.
- Use this cone volume calculator for quick browser-based math with clear result cards.
- Use this cone volume calculator to measure the volume of a cone from radius and height.
Sphere Volume Calculator
Use this sphere volume calculator for quick browser-based math with clear result cards.
- Use this sphere volume calculator for quick browser-based math with clear result cards.
- Use this sphere volume calculator to measure the volume of a sphere from its radius.
Annulus Area Calculator
Use this annulus area calculator for quick browser-based math with clear result cards.
- Use this annulus area calculator for quick browser-based math with clear result cards.
- Use this annulus area calculator to measure the area of a ring using inner and outer radii.
Right Triangle Hypotenuse Calculator
Use this right triangle hypotenuse calculator for quick browser-based math with clear result cards.
- Use this right triangle hypotenuse calculator for quick browser-based math with clear result cards.
- Use this right triangle hypotenuse calculator to measure the hypotenuse of a right triangle from both legs.
Rectangle Diagonal Calculator
Use this rectangle diagonal calculator for quick browser-based math with clear result cards.
- Use this rectangle diagonal calculator for quick browser-based math with clear result cards.
- Use this rectangle diagonal calculator to measure the diagonal length of a rectangle from length and width.
Arithmetic Sequence Nth Term Calculator
Use this arithmetic sequence nth term calculator for quick browser-based math with clear result cards.
- Use this arithmetic sequence nth term calculator for quick browser-based math with clear result cards.
- Use this arithmetic sequence nth term calculator to measure the nth term of an arithmetic sequence.
Arithmetic Sequence Sum Calculator
Use this arithmetic sequence sum calculator for quick browser-based math with clear result cards.
- Use this arithmetic sequence sum calculator for quick browser-based math with clear result cards.
- Use this arithmetic sequence sum calculator to measure the sum of the first n terms in an arithmetic sequence.
Geometric Sequence Nth Term Calculator
Use this geometric sequence nth term calculator for quick browser-based math with clear result cards.
- Use this geometric sequence nth term calculator for quick browser-based math with clear result cards.
- Use this geometric sequence nth term calculator to measure the nth term of a geometric sequence.
Geometric Sequence Sum Calculator
Use this geometric sequence sum calculator for quick browser-based math with clear result cards.
- Use this geometric sequence sum calculator for quick browser-based math with clear result cards.
- Use this geometric sequence sum calculator to measure the sum of the first n terms in a geometric sequence.
Fibonacci Number Calculator
Use this fibonacci number calculator for quick browser-based math with clear result cards.
- Use this fibonacci number calculator for quick browser-based math with clear result cards.
- Use this fibonacci number calculator to measure a Fibonacci number at a chosen position.
Triangular Number Calculator
Use this triangular number calculator for quick browser-based math with clear result cards.
- Use this triangular number calculator for quick browser-based math with clear result cards.
- Use this triangular number calculator to measure the triangular number for any positive integer.
Combination Calculator
Use this combination calculator for quick browser-based math with clear result cards.
- Use this combination calculator for quick browser-based math with clear result cards.
- Use this combination calculator to measure how many ways items can be chosen without regard to order.
Permutation Calculator
Use this permutation calculator for quick browser-based math with clear result cards.
- Use this permutation calculator for quick browser-based math with clear result cards.
- Use this permutation calculator to measure how many ordered arrangements can be made from a set.
Catalan Number Calculator
Use this catalan number calculator for quick browser-based math with clear result cards.
- Use this catalan number calculator for quick browser-based math with clear result cards.
- Use this catalan number calculator to measure a Catalan number for a small non-negative integer.
Harmonic Series Sum Calculator
Use this harmonic series sum calculator for quick browser-based math with clear result cards.
- Use this harmonic series sum calculator for quick browser-based math with clear result cards.
- Use this harmonic series sum calculator to measure the partial sum of the harmonic series up to n terms.
Range Calculator
Use this range calculator for quick browser-based math with clear result cards.
- Use this range calculator for quick browser-based math with clear result cards.
- Use this range calculator to measure the range of a list of numbers.
Variance Calculator
Use this variance calculator for quick browser-based math with clear result cards.
- Use this variance calculator for quick browser-based math with clear result cards.
- Use this variance calculator to measure the population variance of a number list.
Sample Variance Calculator
Use this sample variance calculator for quick browser-based math with clear result cards.
- Use this sample variance calculator for quick browser-based math with clear result cards.
- Use this sample variance calculator to measure the sample variance of a number list.
Root Mean Square Calculator
Use this root mean square calculator for quick browser-based math with clear result cards.
- Use this root mean square calculator for quick browser-based math with clear result cards.
- Use this root mean square calculator to measure the root mean square of a number list.
Geometric Mean Calculator
Use this geometric mean calculator for quick browser-based math with clear result cards.
- Use this geometric mean calculator for quick browser-based math with clear result cards.
- Use this geometric mean calculator to measure the geometric mean of positive values.
Harmonic Mean Calculator
Use this harmonic mean calculator for quick browser-based math with clear result cards.
- Use this harmonic mean calculator for quick browser-based math with clear result cards.
- Use this harmonic mean calculator to measure the harmonic mean of positive values.
Weighted Average Score Calculator
Use this weighted average score calculator for quick browser-based math with clear result cards.
- Use this weighted average score calculator for quick browser-based math with clear result cards.
- Use this weighted average score calculator to measure the weighted average from values and matching weights.
Slope Calculator
Use this slope calculator for quick browser-based math with clear result cards.
- Use this slope calculator for quick browser-based math with clear result cards.
- Use this slope calculator to measure the slope between two points.
Midpoint Calculator
Use this midpoint calculator for quick browser-based math with clear result cards.
- Use this midpoint calculator for quick browser-based math with clear result cards.
- Use this midpoint calculator to measure the midpoint between two points.
Distance Between Points Calculator
Use this distance between points calculator for quick browser-based math with clear result cards.
- Use this distance between points calculator for quick browser-based math with clear result cards.
- Use this distance between points calculator to measure the straight-line distance between two points.
Percent Error Calculator
Use this percent error calculator for quick browser-based math with clear result cards.
- Use this percent error calculator for quick browser-based math with clear result cards.
- Use this percent error calculator to measure the percent error between a measured value and an accepted value.
Simple Proportion Calculator
Use this simple proportion calculator for quick browser-based math with clear result cards.
- Use this simple proportion calculator for quick browser-based math with clear result cards.
- Use this simple proportion calculator to measure the missing value in a proportion.
Linear Interpolation Calculator
Use this linear interpolation calculator for quick browser-based math with clear result cards.
- Use this linear interpolation calculator for quick browser-based math with clear result cards.
- Use this linear interpolation calculator to measure an interpolated y-value between two known points.
Speed Distance Time Calculator
Use this speed distance time calculator for quick browser-based math with clear result cards.
- Use this speed distance time calculator for quick browser-based math with clear result cards.
- Use this speed distance time calculator to measure the average speed from distance and travel time.
Work Rate Calculator
Use this work rate calculator for quick browser-based math with clear result cards.
- Use this work rate calculator for quick browser-based math with clear result cards.
- Use this work rate calculator to measure how long two people take together when each can finish alone.
Coefficient Of Variation Calculator
Use this coefficient of variation calculator for quick browser-based math with clear result cards.
- Use this coefficient of variation calculator for quick browser-based math with clear result cards.
- Use this coefficient of variation calculator to measure the ratio of standard deviation to the mean.
Mean Absolute Deviation Calculator
Use this mean absolute deviation calculator for quick browser-based math with clear result cards.
- Use this mean absolute deviation calculator for quick browser-based math with clear result cards.
- Use this mean absolute deviation calculator to measure the average absolute distance from the mean.
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