Timestamp Converter
Convert between Unix timestamps, ISO dates, and human-readable formats.
Enter Timestamp
Enter a Unix timestamp (seconds or milliseconds), ISO 8601 date, or any valid date string
Current Time
Unix:
1771887365
Unix (ms):
1771887365000
ISO:
2026-02-23T22:56:05.000Z
Local:
2/23/2026, 10:56:05 PM
Enter a timestamp or date to convert
How to Use the Timestamp Converter
Convert timestamps between different formats easily:
- Enter a Unix timestamp (in seconds or milliseconds), ISO 8601 date, or any valid date string in the input field
- The tool automatically detects the format and converts it to all other formats
- Use the 'Current Time' button to see the current Unix timestamp, or copy any converted format using the copy button
What is a Timestamp?
A timestamp is a sequence of characters or encoded information identifying when a certain event occurred, usually giving date and time of day, sometimes accurate to a small fraction of a second. In computing, timestamps are commonly represented as Unix timestamps (seconds since January 1, 1970 UTC) or in ISO 8601 format.
Unix Timestamps
Unix timestamps are a way to represent time as a single number:
- Unix timestamp in seconds: The number of seconds that have elapsed since January 1, 1970 (Unix epoch)
- Unix timestamp in milliseconds: The number of milliseconds since the Unix epoch (commonly used in JavaScript)
- The Unix epoch is January 1, 1970 00:00:00 UTC, which serves as the reference point for all Unix timestamps
Date Formats
Different systems use different date formats. This tool supports:
- Unix timestamp: Numeric representation (e.g., 1609459200 for seconds, 1609459200000 for milliseconds)
- ISO 8601: ISO 8601 format (e.g., 2024-01-01T00:00:00Z) - the international standard for date and time representation
- UTC string: UTC string format (e.g., Mon, 01 Jan 2024 00:00:00 GMT) - Coordinated Universal Time
- Local string: Local time string format - displays time in your browser's local timezone
Understanding Timezones
Timestamps can be represented in different timezones:
- UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks and time
- Local time depends on your geographic location and timezone settings
- Unix timestamps are always in UTC, but can be displayed in any timezone for human readability
Common Uses
- Logging events with precise timestamps for debugging and auditing
- Storing dates and times in databases as Unix timestamps for efficient storage and querying
- API responses often include timestamps in ISO 8601 format for interoperability
- Using timestamps to determine cache expiration and versioning