The Problem with Timestamp Conversion
Every developer has been there: staring at 1735689600 in a log file, needing to know what date that actually is. Or trying to pass a timestamp to an API and unsure whether to use seconds or milliseconds.
Unix Timestamp Converter Pro solves all of this in one place — no login, no tracking, instant results.
Features
- Auto-detect seconds vs milliseconds (boundary: 10,000,000,000)
- 40+ timezones — displays the same moment in any timezone
- Multiple output formats: ISO 8601, RFC 2822, UTC string, date only, time only, relative time
- Live clock — shows current epoch updating every second
- Batch conversion — paste a list of timestamps, convert all at once
- Duration calculator — time between two timestamps in ms/s/m/h/days/weeks
- Reference timestamps — Unix epoch, Y2K, Y2K38, Jan 2025, and more (click to convert)
- Date → Epoch — pick a date/time and get the epoch back
Try It
👉 timestamp-converter-aaz.pages.dev
Part of devnestio.pages.dev — a growing collection of free developer tools.
Quick Reference
| Timestamp | Type | Date |
|---|---|---|
| 0 | seconds | 1970-01-01 (Unix epoch) |
| 946684800 | seconds | 2000-01-01 (Y2K) |
| 1735689600 | seconds | 2025-01-01 |
| 2147483647 | seconds | 2038-01-19 (Y2K38) |
| 1700000000000 | milliseconds | 2023-11-14 |
Built With
Pure Vanilla JS, single HTML file, no dependencies. Deployed on Cloudflare Pages for instant global CDN delivery.
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