Seconds to Duration Converter
Enter a number of seconds to see it broken down into days, hours, minutes, and seconds with HH:MM:SS format.
100% client-side · no upload
How to use
- Enter the number of seconds you want to convert.
- Click Convert to see the result in HH:MM:SS, plain English, and a full unit breakdown.
- Use it for video durations, countdowns, API timeouts, or any time value in seconds.
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Frequently Asked Questions
- Is this seconds to duration converter free?
- Yes, completely free with no signup and no usage limits.
- Does my data leave my device?
- No. All calculations run in JavaScript inside your browser. Nothing is sent to any server.
- Does it work on mobile?
- Yes. The converter is mobile-first and works on iPhone Safari and Android Chrome.