Unix Timestamp Converter
Convert Unix timestamps to readable dates and times. Convert any date to Unix timestamp. Perfect for developers and system admins.
Conversion Result
UTC Date: -
ISO 8601: -
Milliseconds: -
How to use the Unix Timestamp Converter
- To decode, enter a Unix timestamp in seconds.
- To encode, pick a date and time.
- Click Convert.
- Read the result in UTC and your local time.
Formula used
Worked example
Examples
1700000000 = 14 November 2023, 22:13:20 UTC (15 Nov, 03:43:20 IST)
1 January 2026 00:00 UTC = 1767225600
Seconds vs milliseconds
Most systems (Linux, PHP, databases) use seconds, giving 10-digit timestamps today. JavaScript and many APIs use milliseconds, giving 13 digits; divide by 1,000 before converting here. Unix time ignores leap seconds and is always UTC, so convert to IST by adding 5 hours 30 minutes.
Tips for accurate results
- A 13-digit value is in milliseconds.
- Timestamps are time-zone independent.
- Signed 32-bit systems overflow on 19 January 2038.
Frequently Asked Questions
The number of seconds since 1 January 1970 UTC.
Convert to UTC, then add 5:30.
32-bit signed timestamps run out on 19 January 2038.
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Content reviewed by Vinod, Easy Smart Calculator · Last updated October 2026
What is Unix Timestamp?
Unix Timestamp (Epoch Time): The number of seconds since January 1, 1970, 00:00:00 UTC. Used extensively in programming and system administration.
Key Facts
- Epoch Start: January 1, 1970, 00:00:00 UTC
- Current Timestamp: Continuously increasing
- Y2K38 Problem: 32-bit systems overflow on January 19, 2038
- Timezone Agnostic: Unix time is always in UTC
- Milliseconds: Some systems use milliseconds instead of seconds
Common Uses
- Database timestamps
- API responses
- Log files and audit trails
- Authentication tokens
- Event scheduling