18 free tools
Free maths and science tools for school
Check homework, see the working and practise: graphs, statistics, equations, geometry, chemistry and times tables, on a phone or a computer.
Maths
- Graphing calculatorPlot functions, zoom and find where they cross.
- Scientific calculatorTrig, logs, powers, memory and history.
Units Converter & CalculatorOpen - Quadratic solverRoots with the working, real or complex.
- LCM and HCF calculatorWith the prime factors and working.
- Fraction calculatorAdd, subtract, multiply and divide fractions.
- Area and volumeCircles, triangles, cylinders, spheres and more.
- Percentage calculatorA percent of a number, or the change between two numbers.
- Ratio calculatorSolve a proportion or simplify a ratio.
- Multiplication tablesAny times table to print or practise.
- Roman numeralsConvert between numbers and Roman numerals.
Statistics
Science
Grades and attendance
About these tools
The graphing calculator plots several functions at once, zooms and pans, and finds roots and the points where curves cross. The quadratic solver shows each step to the roots, real or complex, and the LCM and HCF calculator shows the prime factors behind the answer.
For statistics, the mean, median and mode calculator adds the range and quartiles, and the standard deviation calculator shows the sample and population results with every step. The area and volume calculator covers flat shapes and solids with their formulas.
For science, the periodic table shows every element with its key data, the chemical equation balancer finds the coefficients for a reaction, and the resistor colour code tool reads the bands on a resistor. Multiplication tables print or turn into a practice quiz, and the attendance calculator shows how many classes you can miss and still keep 75%.
Questions
Do the tools show the working?
Yes. The solvers and statistics tools show each step, so you can follow the method and check your own work.
Do these work on a phone?
Yes. Each tool works in a current phone browser, and the graphing calculator supports pinch to zoom.
Can I print a times table?
Yes. Pick a table or a range and press Print for a clean sheet, or switch to practice for a quick quiz.
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