Arithmetic & Percentage Calculators

The percentage calculator handles the four questions people actually ask — what is X% of Y, X is what percent of Y, percentage increase, and percentage decrease — as separate inputs rather than one box you have to reverse-engineer. The fraction calculator adds, subtracts, multiplies and divides, then reduces to lowest terms and shows the mixed number.

Every tool in this group prints the steps it took. That makes them useful for checking homework rather than just finishing it, and for the moments where you need to explain the result to someone else.