Basic Calculator
Add, subtract, multiply and divide with a simple keypad or your keyboard.
How to use it
Click the keys or use your keyboard: digits, + - * /, Enter or = for equals, Backspace to delete and Escape to clear. Operations run in the order you enter them, for example 2 + 3 × 4 gives 20, like a simple pocket calculator. Results are rounded to 12 significant digits to hide tiny floating-point errors such as 0.1 + 0.2.
Related guide
How to Calculate Percentages Without Mistakes