Percentage of a Number Calculator
Find what percentage X is of Y — instantly.
How to find what percentage one number is of another
Percentage = (Part ÷ Whole) × 100
Example: What percentage is 45 of 180? → (45 ÷ 180) × 100 = 25%
Common uses
- Test scores: You got 42 out of 60 — (42 ÷ 60) × 100 = 70%
- Survey results: 230 of 400 respondents said yes — (230 ÷ 400) × 100 = 57.5%
- Budget tracking: Spent $320 of a $500 budget — (320 ÷ 500) × 100 = 64%
- Progress: Completed 15 of 20 tasks — (15 ÷ 20) × 100 = 75%
Frequently asked questions
(30 ÷ 120) × 100 = 25%. Divide the part (30) by the whole (120), then multiply by 100.
(1 ÷ 4) × 100 = 25%.