Percentage Calculator

About This Tool

Let’s be honest—percentages come up all the time. Whether you're figuring out a tip at dinner, checking your grade, or just trying to understand that “30% off” sale at the store, you need to do a quick math check. That’s where a percentage calculator steps in. It’s not flashy. It’s not complicated. It just works. I built this because I got tired of guessing. You know the feeling—standing in line, trying to calculate 18% of $47.50 in your head, only to second-guess yourself and overpay. This tool cuts through the noise. Plug in your numbers, hit calculate, and move on with your life. It’s simple by design. No ads, no sign-ups, no nonsense. Just a clean interface that gives you the answer you need, fast.

Key Features

• Calculate what percentage one number is of another (e.g., “What percent is 25 of 200?”)
• Find a percentage of a number (e.g., “What is 15% of 80?”)
• Determine the original number when you know the result after a percentage increase or decrease
• Works with decimals and whole numbers—no need to round before you start
• Instant results—no waiting, no loading screens
• Mobile-friendly, so you can use it on your phone while shopping or at a restaurant
• No data saved or tracked. Your numbers stay with you.

FAQ

Q: Do I need to download anything to use this?
A: Nope. It runs right in your browser. No app, no install, no hassle.

Q: Can it handle percentages over 100%?
A: Absolutely. If you're calculating growth or markup, numbers over 100% are totally normal. The calculator handles them just fine.