Maths & statistics
Calculators that show the method, not just the answer. 5 tools, all free and all running in your browser.
Type a whole expression and see the answer as you write it, or use the keypad. Degrees and radians both supported, with every result kept in a history list you can click to reuse.
Paste a column of numbers in any format — commas, spaces, or one per line — and every summary statistic is calculated at once, including the quartiles and standard error that most average calculators leave out.
Enter two fractions, mixed numbers, decimals or whole numbers and pick an operation. The answer comes back simplified, along with its mixed-number, decimal and percentage forms.
Type the equation the way it's written on the page — something like 2x^2 - 7x + 12 = 0 — and the coefficients fill in automatically, or enter a, b and c directly if you already have them. Either way you get the roots, the discriminant, the vertex and the factored form.
Enter any list of whole numbers and get both the lowest common multiple and the highest common factor, along with each number's prime factorisation so you can see where the answer comes from.