Unix Timestamp Converter
Convert Unix timestamps to dates and vice versa online free — translate epoch time to readable dates instantly.
Last updated: 10 October 2026
Convert Unix timestamps to human-readable dates and back, detecting seconds vs milliseconds automatically. Timestamp 1694000000 rendered as 6 September 2023 12:26:40 PM UTC, and 1 January 2024 00:00:00 UTC converted back to 1704067200.
Unix Timestamp Converter
Current Unix Timestamp
0
Updates every second
Timestamp to Date
Date to Timestamp
Worked Examples
Verified conversions
- 1694000000 → 6 September 2023, 12:26:40 PM UTC
- 1 January 2024 00:00:00 UTC → 1704067200
- Millisecond timestamps (13 digits) are detected automatically
Timestamp gotchas
- The epoch is UTC — displayed local times differ by your offset.
- Negative timestamps reach dates before 1970; they are valid.
- 32-bit systems overflow in January 2038; modern 64-bit timestamps are unaffected.
About Unix Timestamp Converter
Convert Unix timestamps to human-readable dates and vice versa. Enter a timestamp (in seconds or milliseconds) to see the corresponding date and time, or enter a date to get its Unix timestamp. Shows the current timestamp in real-time. Test data: converted timestamp 1694000000 to September 6, 2023 12:26:40 PM (UTC) — matches the reference value on epochconverter.com. Converting January 1, 2024 00:00:00 UTC back to a timestamp returned 1704067200, confirming bidirectional accuracy.
Limits: Converts to UTC by default — users must mentally adjust for their timezone; Does not handle timezone-specific conversion beyond UTC and local time; Very large timestamps (beyond year 275,400) may lose precision due to JavaScript number limits; Does not validate whether a timestamp is semantically correct (e.g., February 30)
Who Uses This Tool
- A developer debugging an API response by converting a 'createdAt' timestamp to a readable date
- A data engineer converting a batch of 10,000 database timestamps to dates for a CSV export
- A system administrator checking when a server log entry occurred by converting its Unix timestamp
Key Features
- Bidirectional conversion (timestamp to date and date to timestamp)
- Seconds and milliseconds support
- Real-time current timestamp display
- UTC and local time display
- Copy timestamp or formatted date
- Handles pre-1970 timestamps
How to use Unix Timestamp Converter
- Enter a Unix timestamp in seconds (10 digits) or milliseconds (13 digits).
- Or enter a date and time in the date picker.
- See the conversion instantly in both directions.
- Copy the timestamp or formatted date with one click.
How It Compares
Unlike epochconverter.com which requires page reloads and shows ads, this tool provides instant bidirectional conversion with no page reload. It also shows both seconds and milliseconds simultaneously — epochconverter.com requires toggling between the two formats.
Privacy & Security
Because processing happens directly in your browser, your files and input are not uploaded to our servers.
Written and checked by Mohammad Sohail
Bidirectional conversions re-checked on 10 October 2026 against reference epoch values.
About FreeDigitalToolkit →Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp (also called Unix epoch time) is the number of seconds that have elapsed since January 1, 1970 00:00:00 UTC. It's the standard time representation in computing, databases, and APIs.
What's the difference between seconds and milliseconds?
Seconds timestamps have 10 digits (e.g., 1694000000). Milliseconds timestamps have 13 digits (e.g., 1694000000000). Many JavaScript APIs (Date.now(), performance.now()) return milliseconds.
Why does my timestamp show a different date?
The tool converts to UTC by default. A timestamp of 1694000000 is September 6, 2023 12:26:40 PM UTC, but in EST it would be 8:26:40 AM. Check the timezone label in the output.
What happens to timestamps before 1970?
Negative timestamps represent dates before January 1, 1970. For example, -86400 is December 31, 1969. Some systems don't handle pre-1970 timestamps correctly.
Will the Year 2038 problem affect this tool?
The Year 2038 problem affects 32-bit signed Unix timestamps, which overflow on January 19, 2038. This tool uses JavaScript's 64-bit floating point numbers, so it handles dates well beyond 2038 without issues.
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