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  3. Unix Timestamp Converter
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Unix Timestamp Converter

Convert between Unix/Epoch timestamps and human-readable dates. Supports seconds and milliseconds with timezone information

Convert between Unix timestamps and human-readable dates. Enter a timestamp to see the corresponding date and time, or pick a date to get the timestamp. Supports seconds and milliseconds.

Runs in your browser and files never uploadedMore converters & encodersJump to full guide

Related reading

  • Working with Time Zones: A Developer's Guide to Dates and Times14 min read

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Unix Timestamp Converter: a worked example

A log line records `1700000000` and you need the human date to correlate it with an incident timeline.

Unix timestamp (seconds)

1700000000
Unix Timestamp Converter produces

Human time

UTC:   2023-11-14 22:13:20
Local: 2023-11-14 23:13:20 (Europe/Berlin)
Relative: ~6 months ago

A Unix timestamp counts seconds since 1970-01-01 UTC, so it is timezone-agnostic until rendered, the tool shows UTC and your local zone side by side to prevent off-by-hours mistakes when correlating logs. It also handles millisecond timestamps and converts the other way for building queries.

What is Unix Timestamp Converter?

Convert between Unix timestamps and human-readable dates. Enter a timestamp to see the corresponding date and time, or pick a date to get the timestamp. Supports seconds and milliseconds.

How to use

  1. 1Enter a Unix timestamp (seconds or milliseconds) to see the date.
  2. 2Or select a date and time to get the corresponding timestamp.
  3. 3Toggle between seconds and milliseconds format.

Key features

  • Bidirectional conversion: timestamp to date and date to timestamp
  • Seconds and milliseconds precision
  • Shows the date in your local timezone and UTC
  • Current timestamp display with live updates

Common use cases

  • Log analysis

    Convert epoch timestamps from application logs into readable dates for debugging.

  • Database queries

    Generate timestamp values for SQL WHERE clauses when filtering by date ranges.

  • API development

    Convert between human-readable dates and the epoch format many APIs use for time fields.

Frequently asked questions

What is a Unix timestamp?

The number of seconds (or milliseconds) that have elapsed since January 1, 1970, 00:00:00 UTC, also known as the Unix epoch.

How do I know if a timestamp is in seconds or milliseconds?

Timestamps in seconds are typically 10 digits (until the year 2286). Millisecond timestamps are 13 digits.

Private by design

Conversions run on your device in JavaScript. The values you enter are never sent over the network.