Unix Timestamp Converter
This tool translates numeric Unix epoch timestamps into localized, human-readable date-time strings and converts calendar dates back to epoch integers.
Unix Seconds
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Unix Milliseconds
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ISO 8601 (UTC)
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What is Unix Timestamp Converter?
The Unix epoch (also known as Unix time, POSIX time, or Epoch time) is a system for describing points in time, defined as the number of seconds that have elapsed since Thursday, 1 January 1970 (UTC), minus leap seconds. Because computers handle integers much more efficiently than complex calendar systems (handling leap years, timezone offsets, and month lengths), Unix timestamps are the universal standard for logging events, database storage, and API serialization.
How to use Unix Timestamp Converter
- Type or paste a Unix timestamp (seconds or milliseconds) to decode it into a date.
- Or click 'Current Time' to populate the inputs with the exact present moment.
- Or use the date-time picker fields to convert a calendar date into a Unix epoch integer.
- The translation happens live, showing local time, UTC time, and relative human representation.
- Click 'Copy' to grab the converted output.
Unix Timestamp Converter Example
Epoch: 1783850000
Local: 2026-07-12 09:53:20 UTC UTC: 2026-07-12 09:53:20 UTC
Frequently Asked Questions
What is Unix Epoch Time?
It is the total number of seconds that have elapsed since 00:00:00 UTC on January 1, 1970. It is a timezone-independent value.
What happens when Unix time reaches 2147483647?
This is known as the Year 2038 problem. On January 19, 2038, 32-bit signed integers will overflow, causing systems to roll back to 1901. Modern systems use 64-bit integers to prevent this issue.
How do I tell if a timestamp is in seconds or milliseconds?
Timestamps in seconds have 10 digits (e.g., 1718000000), while milliseconds have 13 digits (e.g., 1718000000000). This tool automatically detects both.
Is my timezone handled automatically?
Yes. The tool reads your browser's local timezone settings to convert the UTC timestamp into your local viewing time, while also displaying the raw UTC time.
How do I get the current Unix timestamp in code?
In JavaScript, use Math.floor(Date.now() / 1000). In Python, use import time; int(time.time()). In Bash, run date +%s.