What is the difference between seconds and milliseconds timestamps?

A milliseconds timestamp is 1,000 times larger than the equivalent seconds timestamp, and typically has 13 or more digits for recent dates.

What happens on January 19, 2038?

That date is the well-known limit for 32-bit signed Unix timestamps in seconds — modern 64-bit systems, and this tool, are unaffected.

Is my timestamp data sent anywhere?

No — conversion happens entirely in your browser.

Can I convert a negative timestamp?

Yes — negative Unix timestamps representing dates before 1970 are supported.

Does this show my local time zone?

Yes — results include your browser's detected local time zone alongside UTC.

What if I choose the wrong unit?

The resulting date will be wildly incorrect (typically far in the past or future) — switch the unit and check again.

Herramientas de Fecha y Hora

Convertidor de Tiempo Unix — Herramienta Gratuita en Línea

Convierte una marca de tiempo Unix en segundos o milisegundos a una fecha.

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Resultados Instantáneos
100% Privado

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Timestamp unit

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What Is Unix Time?

Unix time (or epoch time) counts the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC — a simple, time-zone-independent way for computers to represent a specific moment as a single number.

This tool converts a Unix timestamp — in either seconds or milliseconds, whichever your system uses — into a readable calendar date, shown in ISO 8601, UTC and your local time zone.

¿Quién Usa Esta Herramienta?

Para Empresas

Convert a Unix epoch value from an API response into a readable date.

Para Uso Personal

Figure out what real-world date a Unix timestamp represents.

Para Estudiantes

Learn how Unix epoch time works for a systems or networking course.

Para Oficinas

Convert a timestamp stored in a database field into a readable date.

Por Qué Usar Esta Herramienta

Características Clave

Seconds or Milliseconds

Choose the unit your timestamp uses.

Multiple Output Formats

See ISO 8601, UTC, local time and a relative format at once.

Instant Conversion

Results update immediately as you type.

100% Private

Converted entirely in your browser — nothing is transmitted.

El Resultado

Beneficios

No Ambiguity

Explicitly choose seconds or milliseconds instead of guessing.

See Every Format at Once

ISO, UTC, local and relative time, all in one result.

No Software Needed

Convert directly in the browser — no script or spreadsheet formula required.

Paso a Paso

Cómo Usar Convertidor de Tiempo Unix

Enter a Unix Timestamp

Type the epoch timestamp you want to convert.

Choose Seconds or Milliseconds

Select the unit your timestamp uses.

Read the Converted Date

See the matching calendar date in every common format.

Especificaciones

Detalles Técnicos

Detalle	Valor
Entrada	Unix timestamps in seconds or milliseconds
Procesamiento	Not applicable — single timestamp conversion
Salida	Exact conversion using your browser's native Date object

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Privacidad y Seguridad

Lo que realmente sucede con tu archivo al usar esta herramienta.

100% Client-Side

This tool runs entirely inside your browser using JavaScript — nothing you type or generate is ever sent anywhere.

No Upload, Ever

There is no file upload and no server processing step — your data never leaves your device.

Works Offline

Once this page has loaded, the tool keeps working even without an internet connection.

Nothing Stored

Nothing you enter is saved on our servers — refreshing the page clears everything.

No Tracking of Your Input

We have no way to see what you type, generate or convert with this tool.

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Consejos

Check Your API's Documentation for the Unit

Different systems use seconds or milliseconds inconsistently — check the source before converting.

Use This to Sanity-Check Expiry Timestamps

Quickly confirm a token or session expiry timestamp is in the future, not the past.

Preguntas Frecuentes