01Live
Percentage Calculator
Calculate percentages, percentage change and percentage differences.
Open calculator → Category 03
Math & Statistics
Solve everyday and academic problems involving percentages, fractions, algebra, geometry, probability and data analysis. These calculators can help you check a result, explore a formula or understand numerical relationships. Confirm the input format, units, rounding and assumptions, and use the working or a trusted reference when learning a method.
Math & Statistics Tools
All 50 Category 03 tools are now live, tested and connected.
02Live
Fraction Calculator
Add, subtract, multiply, divide and simplify fractions.
Open calculator →03Live
Decimal Calculator
Perform calculations with decimal numbers and convert between decimal forms.
Open calculator →04Live
Ratio Calculator
Simplify ratios and calculate equivalent ratios and proportions.
Open calculator →05Live
Proportion Calculator
Solve proportions and find missing values in equivalent ratios.
Open calculator →06Live
Average Calculator
Calculate the arithmetic average from a set of numbers.
Open calculator →07Live
Weighted Average Calculator
Calculate an average when values have different weights.
Open calculator →08Live
Mean, Median & Mode Calculator
Calculate mean, median, mode and basic descriptive statistics.
Open calculator →09Live
Greatest Common Factor (GCF) Calculator
Find the greatest common factor of two or more integers.
Open calculator →10Live
Least Common Multiple (LCM) Calculator
Find the least common multiple of two or more integers.
Open calculator →11Live
Algebra Calculator
Solve common algebraic expressions and equations.
Open calculator →12Live
Linear Equation Calculator
Solve linear equations and find the unknown variable.
Open calculator →13Live
Quadratic Equation Calculator
Solve quadratic equations and calculate their real or complex roots.
Open calculator →14Live
System of Equations Calculator
Solve systems of linear equations with multiple variables.
Open calculator →15Live
Exponent Calculator
Calculate powers, exponents and exponential expressions.
Open calculator →16Live
Logarithm Calculator
Calculate logarithms for common, natural and custom bases.
Open calculator →17Live
Square Root Calculator
Calculate the square root of a number.
Open calculator →18Live
Cube Root Calculator
Calculate the cube root of a number.
Open calculator →19Live
Scientific Notation Calculator
Convert numbers to and from scientific notation.
Open calculator →20Live
Polynomial Calculator
Perform calculations with polynomial expressions.
Open calculator →21Live
Area Calculator
Calculate the area of common two-dimensional shapes.
Open calculator →22Live
Perimeter Calculator
Calculate the perimeter of common geometric shapes.
Open calculator →23Live
Volume Calculator
Calculate the volume of common three-dimensional shapes.
Open calculator →24Live
Surface Area Calculator
Calculate surface area for common three-dimensional shapes.
Open calculator →25Live
Triangle Calculator
Calculate triangle sides, angles, area and perimeter.
Open calculator →26Live
Right Triangle Calculator
Calculate sides, angles and area of a right triangle.
Open calculator →27Live
Circle Calculator
Calculate circle radius, diameter, circumference and area.
Open calculator →28Live
Rectangle Calculator
Calculate rectangle area, perimeter and dimensions.
Open calculator →29Live
Square Calculator
Calculate square area, perimeter, diagonal and side length.
Open calculator →30Live
Trapezoid Calculator
Calculate trapezoid area, perimeter and related dimensions.
Open calculator →31Live
Pythagorean Theorem Calculator
Find a missing side of a right triangle using the Pythagorean theorem.
Open calculator →32Live
Distance Calculator
Calculate distance between points or locations using selected inputs.
Open calculator →33Live
Midpoint Calculator
Find the midpoint between two points on a coordinate plane.
Open calculator →34Live
Slope Calculator
Calculate the slope of a line from two coordinate points.
Open calculator →35Live
Angle Calculator
Calculate unknown angles using common geometric relationships.
Open calculator →36Live
Trigonometry Calculator
Calculate common trigonometric values and solve triangle relationships.
Open calculator →37Live
Sin Cos Tan Calculator
Calculate sine, cosine and tangent for an angle.
Open calculator →38Live
Law of Sines Calculator
Solve triangle sides and angles using the law of sines.
Open calculator →39Live
Law of Cosines Calculator
Solve triangle sides and angles using the law of cosines.
Open calculator →40Live
Polygon Calculator
Calculate properties of regular polygons including area and perimeter.
Open calculator →41Live
Standard Deviation Calculator
Calculate population or sample standard deviation from data.
Open calculator →42Live
Variance Calculator
Calculate population or sample variance from data.
Open calculator →43Live
Z-Score Calculator
Calculate a z-score and compare a value with a distribution mean.
Open calculator →44Live
Percentile Calculator
Find percentile rank and values within a dataset.
Open calculator →45Live
Probability Calculator
Calculate basic probabilities and probability relationships.
Open calculator →46Live
Permutation Calculator
Calculate the number of ordered arrangements of items.
Open calculator →47Live
Combination Calculator
Calculate the number of unordered selections from a set.
Open calculator →48Live
Factorial Calculator
Calculate factorials of non-negative integers.
Open calculator →49Live
Confidence Interval Calculator
Estimate confidence intervals from sample statistics and a confidence level.
Open calculator →50Live
Sample Size Calculator
Estimate the sample size needed for a survey or statistical study.
Open calculator →Building Math & Statistics one tool at a time.
Each tool will be built with clear inputs, transparent formulas, useful explanations and a mobile-friendly interface.
RoadmapAll 50 Math & Statistics tools are live and connected in this category. Each calculator has been built and verified for its intended formulas and inputs.
All 50 LiveEvery calculator in Category 03 is now connected. Choose any tool above to start calculating.