How to use this tool
- Type or paste your complete YouTube video description into the text box.
- Review the live character, word, and line counts plus the first 150-character preview.
- If over the limit, remove at least the reported number of characters. Review chapter timing, links and the finished description separately in YouTube Studio.
Official description maximum: 5,000 characters
YouTube’s description guidance states that descriptions allow a maximum of 5,000 characters (checked September 20, 2026). The total covers the full description, including your summary, timestamps, resource URLs and credits.
The first-150-character panel is a writing aid. It is not an official search snippet length or a promise about where YouTube will truncate your text. Check the actual video page and its mobile display.
Within-limit and over-limit examples
Short example: 72 characters
Learn to label a charging cable with paper tape and a pen in one minute.
This leaves 4,928 characters. Being within the limit only answers a length question.
At the boundary: 5,000 characters
A complete draft counted at 5,000 has zero characters remaining. Adding one ordinary letter takes it to 5,001, or one over.
Over the limit: 5,080 characters
Remove at least 80 characters. For example, removing an 82-character repeated sentence leaves 4,998, with two remaining. Preserve necessary credits and disclosures.
This browser counter uses UTF-16 units; some emoji and combined symbols take more than one unit. This is a counting convention, not a claim about YouTube’s internal implementation. Confirm unusual symbols and drafts near the maximum in YouTube Studio.
Build the description and check chapters separately
Copy the YouTube tutorial description template for a summary, prerequisites, chapters and resources. If chapters do not appear, follow the timestamp and eligibility checks; the character count cannot diagnose chapter availability.
Practical tips for better YouTube descriptions
- Open with one or two clear sentences explaining what the video covers and who it helps.
- Put the most useful information early instead of beginning with a long list of links.
- Use short paragraphs, descriptive headings, and line breaks so the text is easy to scan.
- Add chapters, sources, credits, disclosures, and relevant links only when they help the viewer.
- Write naturally, avoid repeated keywords, and check that every promise matches the video.
Example YouTube description structure
1. Opening summary
In one or two sentences, explain the video topic and the result or information viewers can expect.
2. Helpful details
Add supporting context, key points, or a short list of resources mentioned in the video.
3. Chapters or timestamps
Use clearly labelled timestamps when the video has useful sections viewers may want to revisit.
4. Links, credits, and disclosures
Finish with relevant links, creator credits, sources, and any necessary sponsorship or affiliate disclosure.
Plan and polish the rest of your video
Check your packaging with the YouTube Title Length Checker, estimate your draft with the YouTube Script Length Calculator, or explore a scenario with the YouTube Revenue Calculator.
For more guidance, read How to Write Better Video Descriptions and use the YouTube Video Planning Checklist.
Frequently asked questions
What is the maximum YouTube description length?
YouTube’s official help states a maximum of 5,000 characters. Use only the space your summary and supporting information need; filling the limit is not a goal.
Is 150 characters an official YouTube preview limit?
No. This tool uses 150 characters as an illustrative preview of your opening. It is not an official or guaranteed search-display limit. Review the description on YouTube itself.
Do spaces and line breaks count as characters?
Yes. This counter includes spaces, punctuation and line breaks, as well as the text of links and timestamps. It counts UTF-16 units, so some emoji and combined symbols can use more than one unit; confirm a draft near the limit in YouTube Studio.
Will a longer description improve my YouTube ranking?
Not automatically. A useful description can give viewers context, but length alone does not guarantee rankings, views, or traffic.
Should I add links and timestamps?
Add them when they help the viewer. Keep the video summary near the top, label sections clearly, and include only relevant links, chapters, credits, or disclosures.
Does this tool save my description?
No. The tool works in your browser, and your text is not saved or sent to an AI service.