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How many characters can YouTube tags use?
The YouTube Data API sets the tag list at a maximum of 500 characters. Commas between tags count. A tag that contains a space also counts two quotation marks you do not type. Foo-Baz is 7. Foo Baz is 9. Together, with the comma, they are 17. This page counts a list. It does not add tags to a video, and the count does not predict views.
Count a tag list
How the 500 is counted
The number and the two counting rules are from the YouTube Data API videos resource, snippet.tags, as read on 2 November 2026. The property value has a maximum length of 500 characters. Commas between items in the list count toward the limit. If a tag contains a space, the API handles it as though it were wrapped in quotation marks, and the quotation marks count. YouTube's own example is that Foo-Baz contains seven characters and Foo Baz contains nine.
| Piece | Count |
|---|---|
| Foo-Baz | 7 |
| Comma between the tags | 1 |
| Foo Baz | 9 |
| Total | 17 of 500 |
YouTube Help, as read the same day, does not print the number 500. It says the title, thumbnail, and description matter more for discovery. Tags can be useful if the content is commonly misspelled. Otherwise, tags play a minimal role. Adding excessive tags to the video description is against YouTube's spam policies. A title and a description have their own limits in the character counter.
The end of the video is a different question. The end screen calculator finds the last 5 to 20 seconds.
Questions about YouTube tags
How many characters can YouTube tags use?
The YouTube Data API sets the maximum at 500 characters. Commas between tags count. A tag that contains a space also counts two quotation marks.
What does Foo-Baz, Foo Baz count as?
17. Foo-Baz is 7. The comma is 1. Foo Baz is 9, because the 7 characters count plus 2 quotation marks.
Why does a space add two characters?
The API handles a tag that contains a space as if it were wrapped in quotation marks, and those marks count toward the 500.
Do YouTube tags get more views?
No. YouTube says the title, thumbnail, and description matter more. Tags can help when a name is often misspelled, and otherwise play a minimal role.
Is this YouTube tag counter free?
Yes. It runs in your browser. There is no account and no charge.
Vlozy makes the video and can publish it to the YouTube account you connect. This page only counts a tag list. See what Vlozy does.