Unix Timestamp Converter
Convert Unix timestamps to readable dates and back — in seconds or milliseconds, with local time, UTC and ISO 8601 side by side.
Your converted date and time
Paste a Unix timestamp — or pick a date below — to see it as a readable local time, UTC and ISO 8601 string.
How it works
A Unix timestamp is a single number that pins down an exact moment anywhere in the world. It counts the seconds since midnight UTC on 1 January 1970, which makes it easy for computers to compare, sort and store — and completely unreadable for humans. This converter turns one into the other, in both directions.
How it works
- Seconds to milliseconds:
ms = seconds × 1000. - The date is built from the epoch:
1970-01-01T00:00:00Z + ms. - UTC is shown as-is; local time applies your device's current offset.
- ISO 8601 (
2026-08-01T09:00:00Z) is the safe format for APIs and logs.
A worked example
The timestamp 1767225600 is 1 January 2026 at 00:00 UTC. In London during winter that is also 00:00, because the UK is on GMT. Move the same instant to July and the clock reads 01:00, because British Summer Time adds an hour — the number never changed, only the way it is displayed.
How to interpret your result
Check the digit count first. Ten digits is seconds, thirteen is milliseconds, and mixing them is the single most common cause of dates landing in 1970 or in the far future. If the UTC and local rows differ, that gap is your timezone offset — the same gap that will appear for users in other countries.
Common real-world uses
- Reading timestamps in server logs, error reports and analytics exports.
- Debugging API responses that return raw epoch values.
- Checking token or cookie expiry times.
- Setting scheduled jobs and cache lifetimes.
- Comparing event times across countries without timezone confusion.
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