Every everyday percentage question, answered live — what is X% of Y, X is what percent of Y, percent change, and quick tip and discount math. Just start typing.
"Percent" trips people up because the same word covers several different questions. This calculator lays them all out at once, so you never have to remember which way to divide. Type your numbers and every answer updates instantly — no formulas, no second-guessing.
It runs entirely in your browser, so nothing you enter is uploaded or stored — handy when you're working out figures from a paystub, an invoice, or a private budget.
No account, no upload — just type and read the answer.
Use the X is what percent of Y calculator: enter both numbers and read the percentage. 12 of 96 is 12.5%, and your own numbers compute just as instantly.
Enter the before and after values, and the calculator reports the change as a percentage: from 250 to 310 is a 24% increase. It handles decreases and the direction automatically.
The discount calculator takes the price and the percent off and shows what you pay and what you save: 30% off $80 is $56, saving $24.
The tip calculator turns the bill and your chosen percentage into the tip and total instantly, ending the post-dinner phone-math huddle.
Because 'X% of Y', 'X is what % of Y', and '% change from X to Y' are three different calculations wearing similar words. The calculator separates them into clearly labeled sections so the phrasing picks the math for you.