Unix-tijdstempelconverter
Converteert tussen Epoch-seconden en voor mensen leesbare datums.
Detecteert automatisch seconden versus milliseconden.
Current Unix Timestamp
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Epoch → Date
Date → Epoch
Common Timestamps
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About
A free online tool that instantly converts Unix timestamps (Epoch time) to human-readable date formats and vice versa. The current Unix time is displayed in real time and can be copied with one click.
Automatically detects 10-digit (seconds) and 13-digit (milliseconds) timestamps, preventing conversion errors when analyzing logs from JavaScript, Java, or other programs. All processing is done in your browser — no data is ever sent to a server.
How to Use
Choose Direction
Select either "Epoch → Date" or "Date → Epoch" and fill in the corresponding input field.
Enter a Value
Enter a Unix timestamp number or pick a date and time from the date picker. Seconds vs milliseconds are auto-detected.
Copy the Result
Review the converted result (local time, UTC, ISO 8601, relative time) and click the copy button.
Glossary
- Unix Timestamp
- The number of seconds elapsed since January 1, 1970 00:00:00 UTC. Also called Epoch time.
- Epoch
- The reference point in time. In Unix systems, this is 1970-01-01T00:00:00Z.
- UTC (Coordinated Universal Time)
- The world's primary time standard. Japan Standard Time (JST) is UTC+9.
- JST (Japan Standard Time)
- UTC+9 timezone, used in Japan (Asia/Tokyo).
- ISO 8601
- International standard for representing dates and times: e.g., 2025-04-10T03:00:00+09:00.
- Millisecond Timestamp
- A 13-digit timestamp used by JavaScript's Date.now(). Equal to Unix timestamp × 1000.
- Y2K38 Problem
- A bug where systems storing Unix timestamps as 32-bit signed integers will overflow on January 19, 2038. Not an issue on 64-bit systems or JavaScript.
- Timezone Offset
- The difference from UTC. JST is +09:00, EST is −05:00.
FAQ
- Q.What is the difference between a 10-digit and 13-digit timestamp?
- A 10-digit timestamp represents seconds since Epoch. A 13-digit timestamp represents milliseconds (used by JavaScript's Date.now()). This tool automatically detects which format you're using.
- Q.Is my timestamp data sent to a server?
- No. All conversions are performed entirely in your browser using the JavaScript Date API. No network requests are made.
- Q.Can I convert to different timezones?
- Yes. Select from UTC, JST, EST, PST, CET, and other major timezones in the dropdown.
- Q.Does it handle negative values (dates before 1970)?
- Yes. JavaScript's Date object supports negative millisecond values, allowing conversions for dates before the Unix Epoch.
- Q.What is the Y2K38 problem?
- Systems storing Unix timestamps as 32-bit signed integers will overflow at 2147483647 (January 19, 2038, 03:14:07 UTC). JavaScript and 64-bit systems are not affected.
- Q.Does it work on mobile?
- Yes. The tool is fully responsive and works on smartphones and tablets.
Use Cases
🔍 API Log Debugging
Instantly convert Epoch values in API responses to readable dates.
📊 Database Inspection
Decode Unix timestamp columns in MySQL or PostgreSQL databases.
🌍 Cross-Timezone Scheduling
Find out what time a specific Epoch value corresponds to in different timezones.
🧪 Test Data Generation
Generate timestamps for specific dates to use in test cases.
Feedback sturen
Laat ons uw mening weten om ons te helpen de tool te verbeteren.
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