How to use this tool
Replace the example values with your own inputs. Results update as you type. Keep your measurement period and definitions consistent, then use the result to inform the next question in your advertising review.
The formula
Responsive search ad headlines allow 30 characters and descriptions allow 90. Double-width characters count as two.
Worked example
A headline of 28 Latin characters fits within the 30-character limit. A description of 92 exceeds its limit by two.
What the result can tell you
This checks length only. Google still evaluates policy compliance, combinations, rendering and asset quality. Preview the final ad in Google Ads.
Is it free, and where do my inputs go?
The tool runs in your browser without an account or an ad-platform connection. Calculation inputs are not sent to WhatWins. If you save a scenario, it stays in this browser on this device.