When to use this tool
- Validate API date strings.
- Convert ISO timestamps into Unix epoch values.
- Check whether a Z suffix represents UTC.
Date formats
ISO 8601 converter
Paste an ISO or RFC date string and convert it into UTC, local, and Unix timestamp formats.
ISO 8601
2026-06-27T14:28:15.191Z
RFC 2822
Sat, 27 Jun 2026 14:28:15 GMT
Unix seconds
1782570495
Local string
Sat Jun 27 2026 22:28:15 GMT+0800 (China Standard Time)
ISO 8601 Converter: definition and examples
ISO 8601 is a standard date-time format designed to be unambiguous across systems.
How to use it
- Paste an ISO, RFC, or date string.
- Review the parsed UTC and local outputs.
- Copy ISO, RFC, or Unix seconds.
Example
2026-06-27T10:00:00Z is an ISO 8601 timestamp for 10:00 UTC.
Frequently asked questions
What does Z mean in ISO 8601?
Z means the timestamp is in UTC.
What does an offset like +05:30 mean?
It means the local time is five hours and thirty minutes ahead of UTC.