← YouTube Tools
⏱️
YouTube Duration Converter
Convert seconds to H:MM:SS format for YouTube timestamps, or convert H:MM:SS back to total seconds. Useful for writing video descriptions, chapters and embed start times.
Seconds → H:MM:SS
H:MM:SS → Seconds
How to Use
1
Choose your direction
Use the top converter for seconds → timestamp (useful for YouTube embed t= parameter), or the bottom for timestamp → seconds.
2
Enter the value
Type total seconds (e.g. 3661) or a time string (e.g. 1:01:01 for 1 hour, 1 minute, 1 second).
3
Use the result
H:MM:SS format is for video chapters and descriptions. Seconds are used in YouTube embed URLs (?start=N).