Short answer
A Google Ads character limit checker counts each line of ad text against the limit for its field. Responsive search ad headlines allow 30 characters, descriptions 90 and display paths 15. Sitelink text allows 25 characters and each sitelink description line 35. In Chinese, Japanese and Korean, every character counts as 2.
How to use the Google Ads Character Limit Checker
- Pick the field you are writing, such as a headline, description, sitelink or callout.
- Type or paste your text. Put several lines in at once to check a whole set.
- Fix anything marked red (over the limit) or amber (an editorial problem Google may reject).
- Copy the clean lines, or download them as a CSV for your records.
What are the Google Ads character limits for each field?
Every text field in Google Ads has its own limit, and the limit is the same whether you write in the Google Ads interface, Google Ads Editor or the API. These are the limits this checker uses:
| Field | Limit | Notes |
|---|---|---|
| Responsive search ad headline | 30 | 3 to 15 per ad |
| Responsive search ad description | 90 | 2 to 4 per ad |
| Display path (Path 1, Path 2) | 15 | Each |
| Performance Max long headline | 90 | 1 to 5 per asset group |
| Performance Max short description | 60 | At least one description must fit |
| Business name | 25 | |
| Sitelink text | 25 | 12 in double-width languages |
| Sitelink description line | 35 | Line 1 and line 2 |
| Callout | 25 | 12 in double-width languages |
| Structured snippet value | 25 | 3 to 10 values per header |
| Price asset header and description | 25 | 3 to 8 items |
| Lead form headline | 30 | |
| Lead form call-to-action description | 30 |
Sources: Google's help pages on responsive search ads, sitelinks, callouts and Performance Max asset groups, and the Google Ads API asset definitions for sitelink descriptions, snippet values and price items.
How does Google count characters?
Spaces and punctuation count. A headline like "Same-Day Drain Repair" is 21 characters, not 18. In double-width languages such as Chinese, Japanese and Korean, Google counts every character as 2, so a 30-character headline holds 15 of them. The checker applies the same rule, so a mixed line is counted the way Google counts it.
Being under the limit does not mean the whole line always shows. Google picks which headlines and descriptions to combine, and on small screens it may show fewer of them. Short, complete lines are safer than lines written to the last character.
Which editorial problems does the checker flag?
Google rejects ads for presentation problems as well as length. The checker looks for the ones that are easy to miss:
- Repeated punctuation such as "!!" or "??", which Google's punctuation and symbols policy does not allow.
- All-caps words that are not acronyms or brand names, under the capitalization policy.
- Phone numbers in ad text, which are not allowed. Use a call asset instead (policy).
- Extra or missing spaces and emoji or decorative symbols.
- Generic calls to action such as "click here", which Google's style and spelling policy names as an example of unclear ad text.
- Exclamation marks in callouts, sitelinks and structured snippets, where Google's asset rules do not allow them.
The flags are warnings, not a verdict. Google's own review decides. For a fuller check of claims and restricted industries, run the text through the Google Ads Policy Pre-checker.
Tips for writing to the limit
- Write the full thought first, then cut words, not meaning. "Free same-day quotes" says more than "We offer quotes the same day".
- Vary headline lengths. A few short headlines give Google more ways to combine them.
- Keep each sitelink and callout specific: "Upfront pricing" beats "Great service".
- Check the result in context with the Google Ads Preview Tool, or start from a full set of lines with the Google Ads Copy Generator.
Sources
- About responsive search ads (Google Ads Help)
- Responsive search ads overview (Google Ads API)
- About sitelink assets (Google Ads Help)
- About callout assets (Google Ads Help)
- Step 4: Set up your asset group and assets (Google Ads Help)
- Google Ads API asset definitions (googleapis on GitHub)
- Editorial policy (Google Advertising Policies Help)
Updated 2 October 2026 by the Paid Pilot team. Google Ads is a trademark of Google LLC; Paid Pilot is an independent agency.