Unix Timestamp Converter
Free online unix timestamp converter. No sign-up, no installation. Runs entirely in your browser.
Current Unix Timestamp
Live timestamp that updates every second
Unix Timestamp to Date
Convert a unix timestamp to human-readable date and time
Auto-detects seconds (10 digits) or milliseconds (13 digits)
Date to Unix Timestamp
Convert a date and time to unix timestamp
What is a Unix Timestamp?
A Unix timestamp (also called Epoch time, POSIX time, or Seconds since Epoch) is the number of seconds that have elapsed since January 1, 1970, 00:00:00 UTC. It is widely used in computing, databases, APIs, and system logs to represent a specific moment in time in a standardized, timezone-independent format.
Timestamps can be expressed in seconds (10 digits, ~year 2286) or milliseconds (13 digits, more precise). This converter automatically detects which format you’re using and converts between timestamps and human-readable dates.
How to Use This Converter
Live Timestamp: View and copy the current unix timestamp in seconds or milliseconds.
Timestamp to Date: Paste a unix timestamp (in seconds or milliseconds) and instantly see the equivalent UTC time, local time, ISO 8601 format, and relative time (e.g., “3 days ago”).
Date to Timestamp: Select a date and time, choose your timezone (local or UTC), and convert it to a unix timestamp in seconds or milliseconds. Useful when generating timestamps for APIs and databases.
Common Use Cases
- Debugging API responses and logs that use unix timestamps
- Scheduling tasks and cron jobs (requires epoch time)
- Analyzing database records with timestamp fields
- Testing expiration dates for tokens and certificates
- Converting between different time formats for compatibility
- Calculating time differences between events
Frequently Asked Questions
What’s the difference between seconds and milliseconds?
A unix timestamp in seconds is the standard format (e.g., 1672531200). Milliseconds multiply that by 1000 for higher precision (e.g., 1672531200000). This tool auto-detects which one you’re using based on the number of digits.
Can I use this offline?
Yes! This converter runs entirely in your browser with no server calls. It works offline once the page is loaded.
What timezone is used for conversions?
Unix timestamps are always in UTC. The converter shows both UTC time and your local time automatically. When converting from date to timestamp, you can choose to interpret the input as UTC or your local timezone.
Why does my timestamp show a different date on my phone?
The same timestamp represents the same moment in time worldwide, but the local time display depends on your device’s timezone setting. UTC time will always be the same.
When will unix timestamps run out?
In 32-bit systems (seconds only), timestamps will overflow on January 19, 2038. However, 64-bit systems and millisecond-precision timestamps have room for billions of years. This is known as the “Year 2038 problem.”
Is my data private?
Yes. All conversions happen locally in your browser. We don’t store, transmit, or log any timestamps or dates you enter.