X is What Percent of Y?
Find what percentage one number is of another. Everything runs locally in your browser.
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How it works
Divide the part by the whole and multiply by 100: (X ÷ Y) × 100. So 30 of 150 = 30 ÷ 150 × 100 = 20%. For all three percentage modes, use the full Percentage Calculator.
Where you'd use this
Turning two raw numbers into a share: conversion rates, test scores, market share, or what proportion of a budget a line item consumes.
For example: If 30 of 150 visitors sign up, that is 20%. Take care when the total itself changes — 30 of 150 and 40 of 250 are 20% and 16%, so more signups can still mean a worse rate.
FAQ
30 is what percent of 150?
20%. Divide 30 by 150 and multiply by 100.
Is my data uploaded?
No — it runs entirely in your browser.