Unix Timestamp Converter

Convert Unix timestamps and dates with timezone, batch CSV, code snippets, and JWT decoding.

Browser Processing Only (Offline Ready)
1

Enter your text

Paste or type your content into the input field.

2

Adjust settings

Configure options to get the result you want.

3

Copy or save

Copy the output to clipboard or save it.

Key Features

Bidirectional Timestamp ↔ Date

Convert in both directions instantly. Type a Unix timestamp to see the date, or pick a date to get the timestamp — same input, paired output, zero round-trips.

Seconds, Milliseconds, Microseconds, Nanoseconds

Native support for all four precisions with Auto-detect by magnitude. View any timestamp in s, ms, µs, and ns side by side and copy any unit with one click.

Full IANA Time Zone Coverage

Search across 400+ IANA zones with live UTC offset display. Includes Local zone detection and DST-aware formatting for accurate cross-region work.

Batch Convert with CSV Export

Paste up to 5,000 lines of mixed timestamps and dates, auto-detect each row, and download a clean CSV with original input plus all output formats.

Copy-Ready Code Snippets

Generate ready-to-paste conversion snippets for Python, JavaScript, Go, Bash, and SQL — keep API integrations and database queries consistent across stacks.

JWT iat / nbf / exp Decoder

Paste any JWT to decode the payload locally and visualize Issued At, Not Before, and Expires claims with status badges (Valid / Expired / Not Yet Valid). Only the payload is decoded — signatures are never read or validated.

About This Tool

What is Unix Timestamp Converter?

Unix Timestamp Converter converts between Unix timestamps (seconds since January 1, 1970) and human-readable date/time formats. Enter a timestamp to see the date, or pick a date to get the timestamp.

Shows the current Unix timestamp live and supports both seconds and milliseconds formats.

Common Use Cases

  • Debugging: Convert API response timestamps to readable dates for debugging
  • Database Queries: Convert between timestamp formats for SQL queries
  • Log Analysis: Translate Unix timestamps in log files to human-readable times
  • Scheduling: Calculate future/past timestamps for cron jobs or scheduled tasks
  • Cross-Timezone Work: Compare timestamps across different timezones

Privacy-First Timestamp Processing

All conversions use browser-native Date API — no server calls, no data transmitted.

  • Your timestamps never leave your device
  • Works offline after the page loads

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FAQ

A Unix timestamp is the number of seconds that have elapsed since January 1, 1970 00:00:00 UTC (the Unix epoch).
Yes. Pick the unit explicitly from the dropdown, or leave it on Auto and the tool detects the unit from the magnitude of the number.
No. All processing — including JWT decoding and batch conversion — happens entirely in your browser. Nothing is uploaded.
Yes. Once the page has loaded, the tool works completely offline. For the best experience, install PrivaDeck as a PWA from your browser.
Batch input is capped at 5,000 lines per run to keep the page responsive. CSV export works on whatever was processed.
No. The tool only base64url-decodes the payload to read iat, nbf, and exp claims. It never validates the signature, and the token never leaves your browser.