Seconds vs. Milliseconds
10-digit numbers are treated as seconds; 13-digit as milliseconds. Both representations are always shown in the output so you can copy whichever you need.
tool / devops
Unix Timestamp Converter
Paste a timestamp from a log, JWT, or API response. Seconds and milliseconds are detected automatically. Converts both ways.
← Back to toolsTimestamp → Date
Date → Timestamp
Enter a date and time to get the UNIX timestamp.
Common Sources
- JWT
iat/exp— always seconds - JavaScript
Date.now()— milliseconds - Unix
date +%s— seconds - Most API responses — check the docs; usually seconds
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