Free tool · No signup
Amazon Character Limit Checker
Paste your listing fields. Get live char + byte counts that catch the 249-byte backend trap before it de-indexes your terms.
Live character + byte counter
Counts UTF-8 bytes accurately. Backend uses bytes; everything else uses characters.
Total indexed (across all 5 bullets)
Counts run entirely in your browser. Nothing is uploaded or saved. Last verified against Seller Central on May 8, 2026.
Why bytes, not characters? ▾
A character is what shoppers see. A byte is what Amazon's storage layer counts. For plain English text, 1 character = 1 byte and you can ignore the distinction. For multi-byte characters, the difference matters in the backend field.
- ASCII letters: 1 byte
- Accented Latin (ö, ü, ß, é, ñ): 2 bytes
- Japanese, Korean, Chinese: 3 bytes
- Emojis: 4+ bytes
For the full reference, read Amazon character limits 2026.
Common questions
Why does the backend field count bytes instead of characters? ▾
Amazon stores backend search terms as UTF-8 text and enforces a uniform storage cap across every marketplace. ASCII letters use 1 byte each, accented Latin (ö, ü, ß) uses 2, Japanese 3, emojis 4 or more. One byte over 249 in US/UK/EU silently de-indexes every backend term you saved, with no error in Seller Central.
What happens if my Amazon title goes over the limit? ▾
Seller Central usually still saves it, but search results truncate at 70-80 chars on mobile and Amazon may auto-suppress non-compliant titles from search. In Apparel and Pet Supplies the category cap is enforced harder.
Why does the tool show only the first 1,000 bytes of bullets as "indexed"? ▾
Amazon's search algorithm only indexes the first 1,000 bytes across all five bullet points combined. Anything past that is visible to shoppers but invisible to search. A clean target is roughly 200 ASCII characters per bullet × 5 bullets = 1,000 bytes.
Does this tool save my listing copy? ▾
No. Counting runs entirely client-side. The page never sends your text anywhere. Refresh the page and your inputs are gone.
Listing not converting?
Audit a single ASIN end-to-end
The Deep Audit catches what byte counts and rule engines miss: funnel-stage diagnosis, review pain clusters, keyword-presence scoring against your listing copy. $99 per ASIN.
Run a Deep Audit →Manage many listings?
Catch issues across your whole catalogue
Keywords.am scans every listing weekly, flags problems before search rankings drop. From $49/mo.
Start free →