Timestamp Converter
Unix ↔ date with time zones
1785269620Acepta segundos (10 dígitos) o milisegundos (13 dígitos)
Un Unix timestamp es el número de segundos transcurridos desde el 1 de enero de 1970 a las 00:00:00 UTC (epoch). Se utiliza ampliamente en programación para:
- Almacenar fechas de forma compacta en bases de datos
- Ordenar y comparar fechas de manera eficiente
- APIs REST y formatos de intercambio de datos
- Logs de sistema y registros de auditoría
Timestamp Converter: Between Unix, ISO 8601 and Human Formats
Unix timestamps (seconds or milliseconds since 1/1/1970) are the standard for storing dates in databases, APIs, and file systems. Our converter transforms between Unix, ISO 8601 (2026-01-15T10:30:00Z), RFC 2822, and readable formats in your local time zone.
Includes automatic timezone (browser detects yours), manual selection from over 400 IANA zones, and support for both seconds and milliseconds (JavaScript's Date.now() returns milliseconds).
Ideal for developers debugging logs, analysts interpreting exported data, or anyone comparing dates from different systems. Runs in the browser without dependencies.
How does it work?
- 1Enter a timestamp or date
Input Unix seconds/ms, ISO 8601, or use the interactive date picker.
- 2Select the timezone
By default the browser's timezone. Change it to visualize the date in any world zone.
- 3See conversions
You get the equivalent in all formats simultaneously (Unix, ISO, RFC, readable).
Frequently Asked Questions
Both are valid, but different systems use different units. JavaScript uses milliseconds (Date.now() returns 1735689600000). Unix systems, MySQL and PHP use seconds (1735689600). The difference is a factor of 1000.
Best practice: always store dates in UTC in the database. Convert to the user's local time only for display. Our converter shows both explicitly to avoid confusion.
The 'Year 2038 problem': 32-bit Unix timestamps overflow on 2038-01-19 03:14:07 UTC. Modern systems use 64 bits, which extends the limit to year 292 billion. If your legacy system uses 32-bit timestamps, migrate before 2038.