Math Tools
This category collects math calculators for common numeric problems such as percentages, ratios, averages, algebra, geometry, and other everyday calculations.
These tools are useful when you want a quick result for a single task without building the formula manually. They help with practical calculations used in school, work, shopping, planning, and general problem solving.
What these tools are useful for
Everyday calculations
Use math tools for discounts, markups, percentages, averages, ratios, simple comparisons, and other quick calculations that come up in daily life.
Study and practice
Some pages are useful for checking formulas, reviewing results, and solving structured math problems more quickly while studying or practicing.
Work and planning
Math calculators can help with estimates, numeric checks, measurement-based planning, and repeated business or project calculations where speed and consistency matter.
Browse math tools
Search the available tools below if you already know the type of calculation you need.
Percent Calculator
Calculate percentages, percent of a number, and percentage-based results.
OpenSales Tax Calculator
Calculate sales tax, final price, or pre-tax amount from a tax rate.
OpenPercentage Change Calculator
Calculate percentage change between an old value and a new value.
OpenAverage Calculator
Calculate the average of a list of numbers.
OpenPercentage Increase Calculator
Calculate percent increase from an original value to a higher value.
OpenPercentage Decrease Calculator
Calculate percent decrease from an original value to a lower value.
OpenDiscount Calculator
Calculate discount amount, final price, and savings from an original price and discount rate.
OpenFraction Calculator
Add, subtract, multiply, divide, or simplify fractions.
OpenRatio Calculator
Simplify ratios and compare values in ratio form.
OpenProportion Calculator
Solve proportions and equivalent ratios from known values.
OpenMean / Median / Mode Calculator
Calculate mean, median, mode, and basic summary values from a data set.
OpenPercentage Difference Calculator
Calculate percentage difference between two values.
OpenReverse Percentage Calculator
Find the original value before a percentage increase or decrease.
OpenSquare Root Calculator
Calculate the square root of a number.
OpenExponent Calculator
Calculate powers from a base number and exponent.
OpenLog Calculator
Calculate logarithms using common or custom bases.
OpenGCD / LCM Calculator
Find the greatest common divisor and least common multiple of numbers.
OpenScientific Calculator
Calculate scientific expressions with powers, roots, logs, trigonometry, and constants.
OpenStandard Deviation Calculator
Calculate standard deviation from a data set.
OpenVariance Calculator
Calculate variance from a list of numbers.
OpenPermutation and Combination Calculator
Calculate permutations and combinations for counting arrangements and selections.
OpenFactorial Calculator
Calculate factorial values for whole numbers.
OpenBinary Calculator
Perform basic calculations with binary numbers.
OpenHex Calculator
Calculate or convert hexadecimal values for technical and programming tasks.
OpenNumber Base Converter
Convert numbers between decimal, binary, hexadecimal, octal, and other bases.
OpenRandom Percentage Calculator
Generate or calculate random percentage values for testing and examples.
OpenDistance Formula Calculator
Calculate distance between two points using coordinate values.
OpenSlope Calculator
Calculate the slope between two points.
OpenTriangle Area Calculator
Calculate triangle area from base and height or other common inputs.
OpenPythagorean Theorem Calculator
Solve right triangle side lengths using the Pythagorean theorem.
OpenCircle Area Calculator
Calculate the area of a circle from radius or diameter.
OpenCircle Circumference Calculator
Calculate circle circumference from radius or diameter.
OpenQuadratic Equation Calculator
Solve quadratic equations and find real or complex roots.
OpenMatrix Calculator
Perform common matrix calculations and operations.
OpenMatrix Multiplication
Multiply matrices and review the resulting matrix values.
OpenMatrix Determinant
Calculate the determinant of a square matrix.
OpenVector Calculator
Calculate vector operations such as magnitude, addition, and components.
OpenDot Product Calculator
Calculate the dot product of two vectors.
OpenCross Product Calculator
Calculate the cross product of two 3D vectors.
OpenLinear Equation Solver
Solve linear equations and find unknown values.
OpenInequality Solver
Solve inequalities and identify solution ranges.
OpenLogarithm Base Calculator
Calculate logarithms with a selected base.
OpenLog2 Calculator
Calculate base-2 logarithms for numbers and data-related values.
OpenLog10 Calculator
Calculate base-10 logarithms for numbers and scientific values.
OpenCube Root Calculator
Calculate the cube root of a number.
OpenNth Root Calculator
Calculate nth roots using a selected root degree.
OpenAbsolute Value Calculator
Calculate absolute value and distance from zero.
OpenPrime Number Checker
Check whether a number is prime.
OpenPrime Factorization
Find the prime factors of a whole number.
OpenRandom Prime Generator
Generate random prime numbers within a selected range.
OpenModulo Calculator
Calculate remainders using modulo division.
OpenGeometric Mean Calculator
Calculate geometric mean from a set of positive numbers.
OpenHarmonic Mean Calculator
Calculate harmonic mean from a list of numbers.
OpenRange Calculator
Calculate the range of a data set.
OpenIQR Calculator
Calculate interquartile range from a data set.
OpenCovariance Calculator
Calculate covariance between two data sets.
OpenCorrelation Calculator
Calculate correlation between two variables or data sets.
OpenZ-Score Calculator
Calculate z-score from a value, mean, and standard deviation.
OpenNormal Distribution Calculator
Calculate normal distribution probabilities and related values.
OpenBinomial Distribution Calculator
Calculate binomial probability from trials, success probability, and outcomes.
OpenPoisson Distribution Calculator
Calculate Poisson probabilities from an average event rate.
OpenConfidence Interval Calculator
Calculate confidence intervals from sample statistics.
OpenProbability Calculator
Calculate basic probability values for events and outcomes.
OpenOdds Calculator
Convert between odds, probability, and implied chance.
OpenSample Size Calculator
Estimate sample size from confidence level, margin of error, and population assumptions.
OpenConfidence Level Calculator
Calculate confidence level-related values for statistical estimates.
OpenT Test Calculator
Calculate t-test results for comparing sample means.
OpenChi Square Calculator
Calculate chi-square statistics for observed and expected values.
OpenANOVA Calculator
Calculate ANOVA results for comparing multiple group means.
OpenRegression Calculator
Calculate regression values for relationships between variables.
OpenStandard Error Calculator
Calculate standard error from sample statistics.
OpenPopulation Variance Calculator
Calculate population variance from a full data set.
OpenSample Variance Calculator
Calculate sample variance from a data set.
OpenMedian Absolute Deviation Calculator
Calculate median absolute deviation from a data set.
OpenQuartile Calculator
Calculate quartiles and summary values from a data set.
OpenPercentile Calculator
Calculate percentile rank or percentile value from data.
OpenSkewness Calculator
Calculate skewness to measure distribution asymmetry.
OpenKurtosis Calculator
Calculate kurtosis to describe distribution shape.
OpenBayes Theorem Calculator
Calculate conditional probability using Bayes’ theorem.
OpenProbability Density Calculator
Calculate probability density values for selected distributions.
OpenCumulative Distribution Calculator
Calculate cumulative probability for selected distributions.
OpenTriangle Perimeter Calculator
Calculate triangle perimeter from side lengths.
OpenTriangle Angle Calculator
Calculate triangle angles from known sides or angle values.
OpenPolygon Area Calculator
Calculate polygon area from side length, apothem, or coordinate values.
OpenTrigonometry Calculator
Calculate trigonometric values such as sine, cosine, and tangent.
OpenSin Calculator
Calculate sine values for angles in degrees or radians.
OpenCos Calculator
Calculate cosine values for angles in degrees or radians.
OpenTan Calculator
Calculate tangent values for angles in degrees or radians.
OpenLogarithm Solver
Solve logarithmic expressions and equations.
OpenEquation Solver
Solve equations and find unknown values.
OpenCircle Sector Calculator
Calculate circle sector area, arc length, or central angle.
OpenSphere Volume Calculator
Calculate sphere volume from radius or diameter.
OpenCone Volume Calculator
Calculate cone volume from radius and height.
OpenPyramid Volume Calculator
Calculate pyramid volume from base area and height.
OpenHow to choose the right calculator
If your problem is about comparing parts of a number, start with percentage or ratio tools. If it is about repeated values or summaries, use averages or statistics-related pages. If the problem involves shapes or measurements, choose a geometry-oriented calculator.
Splitting these tasks across focused tools makes results easier to read and avoids turning one page into a large general-purpose calculator with too many unrelated inputs.
Why this category is separate
Math tools are different from converters, finance calculators, or general utilities because they are centered on numeric relationships and formula-based problem solving rather than one fixed workflow.
Grouping them in one category makes it easier to browse related calculators together and helps visitors move from a general math task to the specific page that matches the formula or result they need.