Unix Timestamp Converter
Convert between Unix timestamp and datetime. For API, logs, DB.
About this tool
This tool converts Unix timestamp and datetime in one click. Three features: 1) Enter timestamp for datetime, pick datetime for timestamp, 2) Millisecond support, 3) Get current timestamp. Ideal for API, logs, and DB datetime handling.
Look at an API response or database log and wonder what that timestamp is in your local time? Converting a 10- or 13-digit number back to a datetime, or getting the timestamp for a specific time, happens all the time during development. Paste it into this tool and it converts instantly in both directions. Milliseconds are supported too, so it works for both frontend development and backend debugging.
Tool interface
Current timestamp:
Usage
- Enter Unix timestamp (seconds) to convert to datetime
- Pick datetime to convert to timestamp
- Millisecond (13 digits) supported. Get current time available
When to use
Checking API datetime params, converting log timestamps, verifying DB datetime columns.
Examples
1700000000 → 2023/11/15 12:13:20 (JST), get current timestamp.
FAQ
What is Unix timestamp?
Seconds (or ms) since Jan 1, 1970 00:00:00 UTC. Standard for dates in APIs and databases.
What is Jan 1, 1970 UTC?
Unix epoch—the reference date for timestamps. Used as origin in many programming languages.
Milliseconds vs seconds?
1 second = 1000 ms. Date.now() returns ms; many APIs use seconds. 10 digits = seconds, 13 digits = ms.
How to convert timestamp to datetime?
In code: new Date(timestamp*1000) for seconds, new Date(timestamp) for ms. This tool does it instantly.
How to use the Unix timestamp converter tool?
Enter a timestamp to convert it to a date, or select a date to convert it to a timestamp. Milliseconds are supported.
How do I get the current Unix timestamp?
Click Current in this tool to see the timestamp for the current time.
How do I check API datetime parameters?
Convert the timestamps your API returns with this tool to read them as human-friendly datetimes.
How do I read log timestamps?
Enter a numeric log value (e.g., 1700000000) into this tool to convert it to a datetime and understand it at a glance.
What's the difference between JST and UTC?
JST is Japan Standard Time (UTC+9). This tool converts the datetime you select to a timestamp. Watch out for timezones.
How do I tell seconds from milliseconds by digit count?
10 digits = seconds, 13 digits = milliseconds. This tool supports both and shows the correct datetime automatically.
Is Unix Timestamp Converter free?
Free to use, no sign-up required.
Is data sent to a server?
Data stays on your device; we do not store it on our servers.
Supported browsers?
Tested on recent Chrome, Edge, Firefox, and Safari.
Offline use?
Core features work offline after the first load.
vs CLI or desktop apps?
Unix Timestamp Converter is an install-free online alternative to CLI or desktop apps.
When to use it?
Use it when: Checking API datetime params, converting log timestamps, verifying DB datetime columns.
Usage example?
Example: 1700000000 → 2023/11/15 12:13:20 (JST), get current timestamp.
Main features?
Timestamp↔datetime conversion, Millisecond support, Current time
How is this different from similar tools?
Unix Timestamp Converter runs in the browser with no install—ideal for quick checks before heavier CLI or IDE workflows.
Search keywords
unix timestamp converter, epoch to date, timestamp to date, unix time converter, date to unix timestamp, epoch converter, epoch time converter
Basic workflow
- Enter Unix timestamp (seconds) to convert to datetime
- Pick datetime to convert to timestamp
- Millisecond (13 digits) supported. Get current time available
Practical use cases
- Checking API datetime params, converting log timestamps, verifying DB datetime columns.
- This tool converts Unix timestamp and datetime in one click. Three features: 1) Enter timestamp for datetime, pick datetime for timestamp, 2) Millisecond support, 3) Get current timestamp. Ideal for API, logs, and DB datetime handling.
- Timestamp↔datetime conversion
- Millisecond support
Privacy & data handling
Data stays on your device; we do not store it on our servers.
Things to watch out for
- Treat Unix Timestamp Converter as a quick check — re-verify critical values in your editor or CI before shipping.
- If a browser extension breaks the page, retry in a private window with extensions disabled.
- Very large pastes can freeze a tab briefly — wait for the result before closing the tab.