Calculator

A percentage on its own is divided by 100, so 25% is 0.25. After + or −, it is taken of the number before it: 200 + 15% is 230 and 200 − 10% is 180. After × or ÷, it works as a fraction: 3450 × 18% is 621.

Brackets first, then powers, then multiplication and division, then addition and subtraction, just like on a scientific calculator. So 2 + 3 × 4 is 14, and (2 + 3) × 4 is 20.

Yes. Type into the field at the top using the keyboard; the result updates as you type, and Enter replaces the calculation with its result.

Degrees by default, so sin 30 is 0.5. Switch to radians with the button above the calculation, or add ° or rad to a single number: sin(90°) is 1 in either mode.

Yes, in the search box and in the calculation field. 5 plus 3, 12 times 4, 5 squared, the square root of 81 and 2 to the power of 10 all work, as do π, e, 5! and 1.5e6.