Timestamp Converter
Convert Unix timestamps to human-readable dates and dates to timestamps. Supports seconds & milliseconds.
🕓 Timestamp → Date
📅 Date → Timestamp
How to Use
- Timestamp → Date: Enter a Unix timestamp and click "Convert to Date" to see the human-readable date.
- Date → Timestamp: Set the year, month, day, hour, minute, second and click "Convert to Timestamp".
- Check the Milliseconds box if your timestamp is in milliseconds instead of seconds.
- The current timestamp updates live at the top of the tool.
Features
Two-Way Convert
Timestamp to date and date to timestamp in one tool.
Live Clock
Current Unix timestamp updates in real time.
Multi-Format
UTC, local time, ISO 8601, and relative time output.
Quick Refs
Common reference timestamps for quick access.
Use Cases
- API Debugging: Convert timestamps from API responses to readable dates.
- Database Queries: Translate stored epoch values to human-readable format.
- Log Analysis: Convert log timestamps for debugging and monitoring.
- Scheduling: Calculate future timestamps for cron jobs and scheduled tasks.
- JWT Tokens: Decode expiration timestamps in authentication tokens.
Benefits
- Instant two-way conversion between timestamps and dates.
- Multiple output formats including UTC, local, ISO, and relative.
- Live current timestamp display for reference.
- Quick reference table for common timestamps.
- 100% browser-based, free, no signup.
Understanding Unix Timestamps
A Unix timestamp (also called epoch time or POSIX time) is the number of seconds that have elapsed since January 1, 1970, at 00:00:00 UTC. This date is known as the Unix epoch. Timestamps provide a simple, universal way to represent a specific moment in time as a single number, regardless of time zones or date formats.
Seconds vs Milliseconds
Traditional Unix timestamps are in seconds (10 digits, e.g., 1714800000). However, many modern systems like JavaScript and Java use milliseconds (13 digits, e.g., 1714800000000). This tool supports both formats — simply check the "Milliseconds" box when working with 13-digit timestamps.
Why Developers Use Timestamps
Timestamps are timezone-independent, making them ideal for storing dates in databases and transmitting them via APIs. They simplify date arithmetic — comparing, sorting, and calculating differences between dates becomes simple integer operations. Most programming languages provide built-in functions to convert between timestamps and human-readable dates.
Related Developer Tools
When working with timestamps in APIs, generate unique request IDs with the UUID Generator. Encode timestamp parameters in URLs using the URL Encoder Decoder. For testing timestamp-based logic, use the Online Code Editor to write and run JavaScript date operations. Convert between other units with the Unit Converter.
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp is the number of seconds since January 1, 1970, 00:00:00 UTC (the Unix epoch). It is a universal way to represent a point in time.
How do I know if my timestamp is in seconds or milliseconds?
Timestamps in seconds are typically 10 digits (e.g., 1714800000). Millisecond timestamps are 13 digits (e.g., 1714800000000).
Does it handle time zones?
Yes. The tool shows both UTC and your local time zone in the output.
What is the Y2K38 problem?
32-bit systems store timestamps as signed integers, which will overflow on January 19, 2038. 64-bit systems are not affected.
Can I convert negative timestamps?
Yes. Negative timestamps represent dates before January 1, 1970.
Is the live clock accurate?
The live clock uses your system's clock. It updates every second and is accurate to your device's time settings.
Is it free?
Yes, 100% free with no limits.