Ad Copy Character Checker
Live character counts against Google's responsive search ad limits, 30 per headline, 90 per description, with truncation warnings before you paste into the Ads editor.
Free · no signup · last reviewed August 29, 2026
Headlines (30 characters max. Google Ads RSA)
Descriptions (90 characters max)
Limits are Google’s responsive search ad caps: 30 characters per headline (15 slots), 90 per description (4 slots). Amber = within 4 of the cap. Display can still truncate on narrow screens, so front-load the meaning.
Methodology & honest limits
How it works: live counts against Google’s published responsive search ad limits. 30 characters per headline (up to 15), 90 per description (up to 4). Amber warns within four of the cap, because narrow screens truncate before the limit.
Honest limits: fitting is necessary, not sufficient. The checker validates length, not persuasion. Write for the search first, then trim to fit; a bland headline at 29 characters loses to a sharp one at 25.
Keep going
This is the work. Want it done?
Everything here is free to use yourself. That’s the point. If you’d rather a senior marketer just handle it, in your accounts and your name: 20-minute call, no pitch deck.