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Timestamp Converter

Convert between Unix epoch, ISO 8601, and local time. Instant + live clock.

Accepts Unix epoch (seconds or milliseconds) and ISO 8601 / RFC 2822 timestamps.

Epoch seconds
1782692259
Epoch milliseconds
1782692259901
ISO 8601 (UTC)
2026-06-29T00:17:39.901Z
Local time
6/29/2026, 12:17:39 AM
UTC string
Mon, 29 Jun 2026 00:17:39 GMT
Relative
in 0 seconds

How it works

  1. 1Paste a Unix epoch (seconds or ms) or an ISO 8601 date.
  2. 2Read the equivalent in every common format below.
  3. 3Use the quick buttons to insert the current moment.

Use cases

  • Debug log timestamps quickly.
  • Build "expires at" or "issued at" fields for tokens.
  • Convert between database timestamps and user-readable dates.

Frequently asked questions

Seconds or milliseconds?

Both. We use a heuristic: values below 10^12 are interpreted as seconds, larger values as milliseconds.

Time zone?

ISO 8601 output is in UTC ("Z" suffix). The "Local time" row uses your browser's configured time zone.

Why is "now" off by a second?

The live clock updates every second; if you copy immediately after a tick, the value will be one second behind real-time. Use the Now buttons to refresh.

Read the guide
How to read Unix timestamps without doing math
Epoch seconds, milliseconds, ISO 8601 — the four formats every developer should be able to convert between, and what each one means.

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