Math Tools
Clear, step-by-step maths calculators. Calculate percentages, averages and ratios, add and simplify fractions, solve quadratic equations, find standard deviation, LCM and GCD, round numbers or significant figures, count permutations and combinations, work with matrices, and calculate area, perimeter and volume of common shapes. Expressions are evaluated with a safe parser, never with eval, and where it helps the calculators show the working so students can follow each step.
18 Math Tools
Most popular first.
- Percentage CalculatorFind percentages, change and differences.Open Tool
- Basic CalculatorCalculator with keypad, brackets and history.Open Tool
- Scientific CalculatorTrig, logs, powers, factorials and memory keys.Open Tool
- Fraction CalculatorAdd, subtract, multiply and divide fractions.Open Tool
- Average CalculatorMean, median, mode, range, std dev, weighted mean.Open Tool
- Ratio CalculatorSimplify ratios, solve proportions, split totals.Open Tool
- Standard DeviationPopulation and sample SD and variance.Open Tool
- Quadratic SolverReal and complex roots with the discriminant.Open Tool
- Area and PerimeterArea and perimeter of ten 2D shapes.Open Tool
- LCM and GCDLeast common multiple and greatest common divisor.Open Tool
- Rounding CalculatorRound to decimals, sig figs or a multiple.Open Tool
- Pythagorean TheoremFind a missing side of a right triangle.Open Tool
- Prime Number CheckerIs it prime? Prime factors and divisors.Open Tool
- Probability CalculatorSingle, combined, conditional and binomial odds.Open Tool
- Permutations & CombinationsnPr and nCr, with and without repetition.Open Tool
- Shape Volume CalculatorVolume and surface area of 3D shapes.Open Tool
- Matrix CalculatorAdd, multiply, invert and find determinants.Open Tool
- Sig Figs CalculatorCount and round to significant figures.Open Tool
Frequently Asked Questions
What can I do with these Math tools?
Percentages, fractions, equations, statistics, geometry and more.
Which Math tools are most popular?
The most used are Percentage Calculator, Basic Calculator, Scientific Calculator. Tools are listed here in order of popularity.
Do I need to install anything or sign up?
No. Each tool opens in your browser, works without an account and is free to use. Files and text are processed on your device unless a tool clearly states otherwise.