Unix Timestamp Converter

Overview

• Converts between Unix timestamps (seconds or milliseconds elapsed since 1970-01-01) and human-readable date formats (ISO 8601, UTC, and local time).
• Useful for converting a numeric-only timestamp found in an API response or log into a human-readable date, or the other way around.
• Supports both seconds and milliseconds as input units, explicitly selected via radio buttons.

Usage

1. In "Timestamp to Date", enter the Unix timestamp you want to convert and select its unit (seconds or milliseconds), then click "Convert".
2. The result is displayed in three formats: ISO 8601, UTC, and local time.
3. To convert the other way, enter a date and time into the "Date to Timestamp" field and click "Convert".

Example

1704067200 (seconds)

ISO 8601: 2024-01-01T00:00:00.000Z
UTC: Mon, 01 Jan 2024 00:00:00 GMT

Use Cases

• Converting a Unix timestamp stored in a log or database into an actual date to check it
• Working backward from a specific date to prepare a timestamp, such as an expiration (exp), to include in an API request
• Checking how a moment looks in different timezones by viewing UTC and local time side by side

FAQ

Notes

• Local time is displayed in the timezone configured on your browser or device. Opening this on a different environment may show a different time.
• Mixing up seconds and milliseconds results in a very different date. Use the rough digit count (about 10 digits for seconds, about 13 for milliseconds) as a guide when choosing the unit.
• In the "Date to Timestamp" field, enter a date-time string in a format the browser can parse, such as ISO 8601.