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⏱️ Timestamp Converter

Unix time,
20+ formats, both ways

Seconds, milliseconds, ISO 8601, UTC, RFC 2822, SQL, Excel serial and more — plus a live clock, batch mode, and duration math. All in your browser.

Current Unix Timestamp
—
—
— ms

Convert a Timestamp or Date

Paste any Unix timestamp (seconds, ms, µs or ns — auto-detected) or a date/time string below.

Build a Date → Timestamp

Pick a calendar date and time (Yr-Mon-Day Hr:Min:Sec AM/PM) in any time zone and get its Unix timestamp.

Duration Between Two Timestamps

Add or Subtract Time

Batch Conversion

One timestamp or date per line. Unit is auto-detected per line.

⚠ Year 2038 Problem Countdown

Systems storing Unix time as a signed 32-bit integer overflow at 03:14:07 UTC on 19 January 2038 (timestamp 2147483647).

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Human-Readable Time Reference

UnitSeconds
1 minute60
1 hour3,600
1 day86,400
1 week604,800
1 month (~30.437 days)2,629,743
1 year (365.25 days)31,557,600

Get the Current Timestamp in Code

Quick reference for getting "now" and parsing a timestamp back to a date, per language.

🕘 Local History

Saved only on this device — never uploaded anywhere.

No conversions yet.
How To

How to use every option

  1. Watch the live clock — the top panel ticks the current Unix timestamp every second; toggle Live off to freeze it, or click "Load Current Time Into Converter" to send it to the main converter.
  2. Convert a timestamp or date — paste any value into the main input. Digit count (10/13/16/19) auto-detects seconds, milliseconds, microseconds, or nanoseconds; ISO strings and most date text are also accepted. Click Convert.
  3. Compare a time zone — pick a zone from "Compare against time zone" before or after converting to see that value alongside your local time and UTC in the results grid.
  4. Review all formats — the results grid lists 20+ formats (Unix seconds/ms/µs/ns, ISO 8601, UTC, RFC 2822, 12h/24h, Y-M-D, D/M/Y, M/D/Y, full written date, weekday, day-of-year, ISO week, relative time, Excel serial, .NET ticks, SQL datetime, cookie-expiry format and more). Click any value to copy it, or the 📌 to pin it.
  5. Use pinned formats — pinned rows move to their own panel and keep updating whenever you convert a new value, handy for a format you check often.
  6. Build a date manually — enter Year/Month/Day, Hour/Minute/Second, AM/PM, and a time zone, then click "Build Timestamp" to get the Unix value for that exact moment.
  7. Calculate a duration — enter two timestamps or dates (leave B blank to use "now") to get the difference broken into years/days/hours/minutes/seconds.
  8. Add or subtract time — enter a base timestamp (or leave blank for now), an amount, a unit, and a direction to get the resulting timestamp in every format.
  9. Convert in batch — paste one timestamp or date per line into Batch Conversion, click Convert All, then copy the table or copy it as CSV.
  10. Check the Year 2038 countdown and the unit/code reference tables for quick facts and per-language snippets to get "now" or parse a timestamp in your own code.
  11. Revisit past conversions from Local History, saved only on this device.
Capabilities

Built to replace a dozen timestamp tools

⏱️
Live Ticking Clock
The current Unix timestamp updates every second, with a one-click send to the converter.
🔢
20+ Formats, Both Ways
Unix (s/ms/µs/ns), ISO 8601, UTC, RFC 2822, SQL, Excel serial, .NET ticks and more.
🌐
Time Zone Compare
See any moment in your local zone, UTC, and a second zone of your choice at once.
📌
Pin Your Favorites
Pin the formats you check most; they stay visible and update live.
📦
Batch Conversion
Paste a list of timestamps or dates and convert them all in one table.
➕
Duration & Offset Math
Find the gap between two timestamps, or add/subtract time from any moment.
💻
Code Snippets
Copy-ready "get now" and "parse timestamp" snippets for 15+ languages.
🔒
100% Private
Every calculation runs locally using your browser's Intl API — nothing is uploaded.

Frequently Asked Questions

It's the number of seconds (or milliseconds) that have elapsed since the Unix Epoch — 00:00:00 UTC on 1 January 1970 — not counting leap seconds.

Digit count is the fastest check: 10 digits is usually seconds, 13 is milliseconds, 16 is microseconds, and 19 is nanoseconds. This tool auto-detects the unit as you type.

No. A Unix timestamp always represents one exact moment in UTC. Time zones only change how that same moment is displayed to a viewer.

Yes, using a negative number, which counts seconds backward from the epoch. This tool supports negative timestamps.

Systems that store Unix time as a signed 32-bit integer will overflow at 03:14:07 UTC on that date — the Year 2038 problem. 64-bit or unsigned storage is unaffected.

No. Every conversion and calculation runs locally in your browser using the Intl API. Nothing is sent to or stored on our servers.

Yes, while the tab is open and Live Mode is on, the current timestamp panel ticks every second. Turn it off to freeze a value you want to inspect or copy.

Yes. Use Batch Conversion to paste one timestamp or date per line and get a table of results you can copy or export as CSV.

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