6 calculators
Maths tools and calculators
Every tool here prints its working, not just the answer, so you can check a method as well as a result. They run entirely in your browser; nothing you type is sent anywhere.
- T01 · Numbers
Fraction Calculator
Add, subtract, multiply and divide fractions, with the answer simplified and shown as a decimal.
- T02 · Numbers
Percentage Calculator
Find a percentage of a number, express one number as a percentage of another, or work out percentage change.
- T03 · Measurement
Unit Converter
Convert length, mass, volume and temperature between metric and imperial units.
- T04 · Algebra
Equation Solver
Solve linear equations ax + b = c and quadratic equations ax² + bx + c = 0 with every step shown.
- T05 · Data & Statistics
Average & Spread Calculator
Paste a list of numbers to get the mean, median, mode, range and standard deviation.
- T06 · Money & Finance
Compound Interest Calculator
See how savings grow with compound interest, year by year, compared with simple interest.