The Only Percentage Calculator You Need — 4 Calculations in One Tool

I use percentages constantly and always forget the formula. So I built one tool that handles all four common percentage calculations. 1. What is X% of Y? Example: What is 25% of 200? → 50 2. X is what % of Y? Example: 50 is what % of 200? → 25% 3. Percentage Change Example: From 100 to 150 → +50% 4. Increase/Decrease by % Example: 80 + 20% = 96 | 80 - 20% = 64 Percentage Calculator Simple, instant, no signup. More calculators: Tax Calculator Compound Interest BMI Calculator Tip Calculator Full toolkit: devtools-site-delta.vercel.app