Unix Timestamp Converter
Free online timestamp converter. Convert Unix timestamps to human-readable dates and back. Support for multiple formats and timezones.
Current Time
Conversion Results
Unix (seconds)
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Unix (milliseconds)
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ISO 8601
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UTC String
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Local Time
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Relative Time
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Convert between Unix timestamps and human-readable dates instantly. Support for multiple output formats including ISO 8601, UTC, local time, and relative time.
All conversions happen locally in your browser. Your data never leaves your device.
How to Use This Tool
- 1 Enter a Unix timestamp, date/time, or ISO 8601 string
- 2 Select your timezone for accurate local time conversion
- 3 View all format conversions instantly
- 4 Copy any format you need with one click
- 5 Use common timestamps as quick references
Use Cases
Log Analysis
Convert timestamps in logs to readable dates for debugging.
API Development
Work with timestamp fields in REST APIs and databases.
Database Queries
Convert dates for SQL queries and data migrations.
Task Scheduling
Calculate future timestamps for scheduled jobs and cron tasks.
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's a universal way to represent time independent of timezones.
What's the difference between seconds and milliseconds?
Unix timestamps are traditionally in seconds, but JavaScript and many APIs use milliseconds. Milliseconds are 1000x larger (13 digits vs 10 digits currently).
What is the Year 2038 problem?
32-bit systems store timestamps as signed integers, overflowing on January 19, 2038. Modern 64-bit systems don't have this limitation.
How do timezones affect timestamps?
Unix timestamps are always in UTC. Timezone only affects how you display the local time. The underlying timestamp value is the same globally.
What is ISO 8601?
ISO 8601 is an international standard for date/time representation (e.g., 2024-01-15T14:30:00Z). The Z suffix indicates UTC time.