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Unix Timestamp Converter Online — Epoch to Human Date

Convert Unix timestamps to human-readable dates, or turn any date into a Unix epoch number. The tool handles seconds and milliseconds, displays the result in your local timezone and UTC, and outputs ISO 8601 strings ready to drop into logs, APIs, and database fixtures.

Features

  • Seconds & milliseconds

    Auto-detects whether your timestamp is in seconds or milliseconds.

  • Local + UTC view

    See the same instant in both your local timezone and UTC, side by side.

  • ISO 8601 output

    Copy ISO 8601 (`2026-05-21T08:30:00Z`) for APIs and structured logs.

  • Now button

    One click pastes the current timestamp in seconds and milliseconds.

How to convert Unix timestamp to date

Translate between epoch numbers and human dates in two clicks.

  1. Enter a timestamp or datePaste a Unix timestamp (seconds or milliseconds), or pick a date and time.
  2. Read the conversionThe output shows the date in local time, UTC, and ISO 8601 format simultaneously.
  3. Copy the format you needEach output has a copy button for use in queries, log filters, or code.

Examples

Convert a timestamp to a date

Input
1716000000
Output
Local: 2024-05-18 11:20:00 (+07:00)
UTC:   2024-05-18 04:20:00
ISO:   2024-05-18T04:20:00Z

Convert a date to a timestamp

Input
2026-01-01T00:00:00Z
Output
Seconds:      1767225600
Milliseconds: 1767225600000

Frequently Asked Questions

What is a Unix timestamp?
A Unix timestamp (or epoch time) counts the number of seconds since January 1, 1970 UTC. It is a timezone-independent way to represent a single moment in time.
How do I tell if a timestamp is in seconds or milliseconds?
Modern timestamps in seconds have 10 digits (~1,700,000,000). Timestamps in milliseconds have 13 digits (~1,700,000,000,000). The tool auto-detects and labels both.
Why does the local time differ from UTC?
The local time uses your browser's timezone, including DST adjustments. UTC is timezone-independent. The tool shows both so you can spot timezone bugs quickly.
Does it handle dates before 1970?
Yes. Unix timestamps can be negative for dates before 1970-01-01. The tool accepts and displays negative timestamps correctly.
Can I convert in batch?
Today the tool converts one value at a time. Batch conversion is on the roadmap. In the meantime, write a one-liner in your shell or editor for bulk work.