RSA Character Counter
Check Responsive Search Ad headlines (30) and descriptions (90) against Google & Microsoft Ads limits as you type.
How to use
Enter headlines
Type each Responsive Search Ad headline (max 30 characters).
Add descriptions
Type your descriptions (max 90 characters each).
Stay in the green
Any field over its limit turns red — trim it to fit.
What this tool does
- Enforces Google’s live Responsive Search Ad limits as you type: 30 characters per headline (up to 15 headlines), 90 characters per description (up to 4 descriptions).
- Flags any field over its limit in red immediately — no submitting to Google Ads first to find out it was rejected.
- Counts characters, not words — matches exactly what Google Ads itself counts against the limit.
Related tools
- Multi-Language RSA Fit Checker — The same limits, checked across EN/ES/PT/FR/DE translations at once
- ASA/CAP Ad Copy Checker — Check the same ad copy for UK advertising-standards red flags
- Keyword Match Tool — Build the keyword list your headlines and descriptions should echo
Last updated: 19 August 2026 · Built by the CWA Europe PPC team.
Frequently asked questions
What is the RSA Character Counter?
It is a real-time character counter designed for Responsive Search Ads that checks each headline against the 30-character limit and each description against the 90-character limit, flagging anything that is too long.
How do I use it?
Type or paste your headlines and descriptions into the provided fields; the counter updates instantly and highlights any asset that exceeds the Google Ads character limit so you can trim it before uploading.
Does it support multiple headlines and descriptions at once?
Yes, you can enter up to 15 headlines and 4 descriptions to match the full RSA asset limits, and each one is checked individually.
Is this tool free?
Completely free, with no account or sign-up needed.