Utilix
Developer Tools

Unix Timestamp Converter

Convert Unix timestamps (seconds or ms) to ISO, UTC, local, and relative time.

  • Unix seconds1777880995
  • Unix milliseconds1777880995000
  • ISO 8601 (UTC)2026-05-04T07:49:55.000Z
  • UTC stringMon, 04 May 2026 07:49:55 GMT
  • Local timeMon May 04 2026 07:49:55 GMT+0000 (Coordinated Universal Time)
  • Relativenow

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About Unix Timestamp Converter

Unix Timestamp Converter parses a unix timestamp (seconds or milliseconds — auto-detected) or an ISO date string, and shows it in every common format: ISO 8601, UTC, local time, and relative ("2 hours ago"). One-click copy each line. Useful for debugging timestamps in log files, converting epoch values from APIs, and quickly reading "what time was this event in my time zone". Unix timestamps (a.k.a. epoch time) count seconds since 1970-01-01 UTC. They show up everywhere — in API responses, database columns, JWT exp/iat claims, log files, file metadata, cron schedules, and operating system timestamps. The trouble is that "1716148800" tells you nothing on its own. Pasting it here surfaces the human-readable date in your local time zone, in UTC, and as a relative phrase (e.g. "in 2 hours" or "3 days ago"). The reverse direction is just as common — given a date you know, get the epoch value to use in a database query, an API request, or a feature-flag rollout cutoff.

How Unix Timestamp Converter works

  1. Paste a Unix timestamp (10 digits = seconds, 13 digits = milliseconds — auto-detected) or an ISO date.
  2. The tool converts to all common formats simultaneously.
  3. View ISO 8601 (the standard machine format), UTC (the reference time zone), and your local time.
  4. A relative-time line ('2 hours ago', 'in 3 days') makes recent timestamps instantly readable.
  5. Click any line to copy that format — use it in your code, query, or document.

When to use Unix Timestamp Converter

  • Decode a Unix timestamp from a log line to figure out exactly when an event happened.
  • Convert an API's epoch response into a human-readable local time.
  • Inspect JWT exp and iat claim timestamps to see if a token is about to expire.
  • Build a feature-flag rollout cutoff timestamp for use in code or config.
  • Compare two timestamps from different log sources after normalizing them to the same format.
  • Generate the epoch value for a SQL query like 'WHERE created_at > 1716148800'.

Why choose Utilix Unix Timestamp Converter

  • Auto-detects seconds vs milliseconds — no manual switching.
  • Shows local, UTC, ISO, and relative time side by side, so you don't have to copy-paste between three tools.
  • Local-only — safe for log timestamps from internal systems.
  • Live updating means you can iterate on a timestamp value and immediately see the result.
  • No signup, no popups, no daily limit.

Frequently asked questions