How do I convert a UNIX timestamp to a human date?

Enter a UNIX timestamp (seconds or milliseconds) and click Now or Live if needed. The tool auto-detects seconds vs milliseconds and shows UTC and your chosen timezone.

How do I convert a date/time to a UNIX timestamp?

Switch to Human → Unix, set the date and time (or paste a date string), choose a timezone, and the tool returns UNIX seconds and milliseconds.

Does the tool support timezones?

Yes. Select UTC, Local, or any IANA timezone (e.g., Asia/Kuwait). Output includes ISO 8601 with offset and a formatted string in the chosen timezone.

Is my data uploaded or stored?

No. All calculations run locally in your browser. Nothing is uploaded to a server.

Can it handle milliseconds and relative time?

Yes. It auto-detects seconds vs milliseconds and shows “time ago/in” relative output. You can also display milliseconds in formatted results.

Is there a batch converter and CSV export?

Yes. Paste multiple lines (timestamps or parseable dates) into Batch Converter and export results as CSV.

UNIX Timestamp Converter

Epoch seconds/ms ↔ human date/time with timezones, live now, relative time & batch CSV — all local, no upload.

Privacy-first • Local processing

Timezone

24-hour Show ms

UNIX Timestamp

Auto-detects seconds vs milliseconds.

UTC

ISO 8601

—

RFC 2822

—

In Local

ISO 8601

—

RFC 2822

—

Seconds

—

Milliseconds

—

Relative

—

Weekday/Week/Day-of-year

—

Shortcuts: R reset • L live toggle

Batch converter (paste lines of timestamps or dates)

Uses selected timezone & display options

Input	Epoch (s)	UTC ISO	In TZ	Relative

About this UNIX converter

Convert epoch timestamps (seconds or ms) to human dates and back. Pick any timezone, see ISO/RFC formats, relative “time ago”, ISO week and day-of-year. Includes “Now” with live updates and a batch converter with CSV export. All calculations run locally in your browser.

Convert UNIX → human

Paste a timestamp (sec/ms) and the tool formats it in UTC and your selected timezone.

Convert human → UNIX

Set date/time or paste a date string; get UNIX seconds and milliseconds instantly.

Timezone support

Use UTC, Local, or any IANA timezone (e.g., Asia/Kuwait).

Seconds vs milliseconds

Auto-detected. Toggle millisecond display in the options.

Privacy

Everything runs locally in your browser—no uploads.

Batch & CSV export

Paste multiple lines and export results as CSV from the Batch Converter.

Last updated: October 20, 2025

UNIX Timestamp Converter

About this UNIX converter

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