The idea is simple: apart from regular numbers (like 4, 3.14 or 43942), you can also input ranges (like 4~6, 3.1~3.2 or 40000~45000). The character between the two extremes of the range is a tilde (~), a little wave symbol. You can find it on most keyboards, but for convenience, I also included it in the keypad above.

Omni Calculator solves 3708 problems anywhere from finance and business to health. It’s so fast and easy you won’t want to do the math again!