Math Calculators

From percentages and fractions to roots and averages, these calculators give instant, step-by-step answers for homework, exams and everyday sums. No app to install — just type and see the result. The first live calculator is the Percentage Calculator, with three modes: a percentage of a number, what percentage one number is of another, and percentage increase or decrease — each showing the working so you can follow the math. Later batches add fraction and decimal calculators, averages, ratios, square roots, powers, logarithms, area and volume calculators and a scientific calculator, all with the same step-by-step style. Because they run in your browser, they work offline after the first load, which makes them handy in exams revision, in the classroom, and in shops and markets where the signal is weak. Every result is free, with no account and no ads inside the calculator. Teachers and students can use them to check homework, and shopkeepers can use them to work out discounts and change without reaching for a calculator app.