Four essential percentage calculators in one tool. Fast, accurate, and 100% client‑side.
All calculations happen in your browser. No data sent to any server.
Real‑time updates as you type. Supports decimals and large numbers.
Responsive design works flawlessly on phones and tablets.
1️⃣ Select the type of percentage calculation you need.
2️⃣ Enter the required numbers in the fields.
3️⃣ The result updates instantly – no button to press.
4️⃣ Click "Copy Result" to copy the current result to clipboard.
✅ Perfect for discounts, tips, statistics, and everyday math.
Percentage calculations are everywhere – from shopping discounts to exam scores, financial changes to data analysis. Our tool covers the four most common scenarios: finding a percentage of a number, determining what percent one number is of another, and calculating percentage increase or decrease. Each mode updates in real time as you type, giving you instant answers without clunky buttons. All computation is done locally, so your data never leaves your device.
Yes, the calculator supports decimal numbers for precise results.
Increase = ((New - Old) / Old) × 100. Decrease = ((Old - New) / Old) × 100. Negative results show as 0%.
Absolutely. No data leaves your browser. Everything is client‑side.