Maths, Education & Science Calculators

Algebra, trigonometry, statistics, equations and science.

100 tools · 100% Free · Works Offline

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Percentage CalculatorWork out a percentage of a number, percentage increase or decrease, or the difference between…

Percentage Change CalculatorCalculates the percentage change between an old and a new value.

Rule of Three CalculatorSolve direct and inverse proportion problems fast with this rule of three calculator, useful…

Standard Deviation CalculatorCalculate sample or population standard deviation and variance from your data set, free and…

All Maths, Education & Science Calculators (100)

Guide to Maths Calculators

This hub spans school and university maths, applied statistics, and the physics and chemistry formulae people reach for mid-problem: students checking homework, teachers building marking keys, and technicians running quick unit or rate calculations. The tricky part is that near-identical-sounding tools do different jobs, so knowing whether you want a probability, an average, or an error figure matters more than the name.

Grades, marks and study

Use the final grade and test grade tools while a semester is running to see what you still need; GPA once results are in, and typing speed for keyboard practice.

GPA Calculator Final Grade Calculator Test Grade Calculator Fraction to Percent Calculator Typing Speed Calculator

Descriptive statistics and spread

Start with mean, median or mode to summarise a data set, then move to standard deviation, percentile and z-score when you need to describe how spread out or unusual a value is.

Average (Mean) Calculator Median Calculator Mode Calculator Standard Deviation Calculator Percentile Calculator Z-Score Calculator Normal Distribution Calculator

Probability and inference

Pick binomial or conditional probability for specific event set-ups, and confidence interval or margin of error when you are reasoning from a sample back to a population.

Probability Calculator Binomial Probability Calculator Conditional Probability Calculator Confidence Interval Calculator Margin of Error Calculator Permutations Calculator Combinations Calculator

Algebra and equations

Reach for the quadratic, linear or polynomial solvers for single equations, the system solver for simultaneous ones, and the graphing calculator to see the shape before you solve.

Quadratic Equation Calculator Linear Equation Solver System of Equations Calculator Polynomial Root Calculator Logarithm Calculator Graphing Calculator

Physics and chemistry formulae

Use force, energy and momentum tools for mechanics questions, and molarity, pH or stoichiometry for solution and reaction work where you already know the given quantities.

Force, Mass & Acceleration Calculator Kinetic Energy Calculator Projectile Motion Calculator Molarity Calculator pH Calculator Stoichiometry Calculator (Moles, Mass & Particles)Density Mass Volume Calculator

Percentages, ratios and everyday maths

For a plain percentage use the percentage or change tools; reach for reverse percentage to strip a figure back out, and ratio or proportion tools for scaling and dilution.

Percentage Calculator Percentage Change Calculator Reverse Percentage Calculator Percent Error Calculator Ratio Calculator Proportion Calculator Dilution Ratio Calculator

Important calculation notice

These calculators are intended for education, estimation and preliminary checks. Verify all inputs, units, assumptions, material properties and applicable standards. Safety-critical or final engineering designs should be checked by a suitably qualified professional.

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Maths, Education & Science Calculators

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Popular Calculators

All Maths, Education & Science Calculators (100)

Numbers, Algebra & Sequences30 calculators

Percentages & Everyday Maths11 calculators

Statistics & Probability17 calculators

Geometry & Trigonometry11 calculators

Physics, Chemistry & Motion26 calculators

Education & Grades5 calculators

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