🕐 Unix Timestamp Converter
Convert epoch timestamps (seconds or milliseconds) to readable dates in local time, UTC and IST — and any date back to a Unix timestamp.
Frequently Asked Questions
What is a Unix timestamp?
A Unix timestamp (epoch time) is the number of seconds elapsed since 00:00:00 UTC on 1 January 1970, not counting leap seconds. It's the standard way computers store points in time — timezone-independent and easy to compare or sort.
How does the tool tell seconds from milliseconds?
By magnitude: values with 12 or fewer digits are treated as seconds, values with 13 or more digits as milliseconds. A 10-digit timestamp like 1752652800 is seconds (year 2026); the same moment in milliseconds is 13 digits: 1752652800000. The detected unit is always shown in the result so you can verify.
What is IST and what is its offset from UTC?
IST (Indian Standard Time) is UTC+5:30, used across all of India with no daylight saving time. This tool always shows the IST equivalent alongside UTC and your local time, which is handy when reading server logs stored in UTC.
Can timestamps be negative?
Yes — negative timestamps represent dates before 1 January 1970. For example, -86400 is 31 December 1969 00:00 UTC. This tool accepts negative values.
What is the year 2038 problem?
Systems that store Unix time in a signed 32-bit integer overflow on 19 January 2038 at 03:14:07 UTC (timestamp 2,147,483,647). Modern systems use 64-bit time values, which won't overflow for about 292 billion years.
Does the Date → Timestamp direction use my timezone?
Yes. The date and time you pick are interpreted in your browser's local timezone, then converted to the timezone-independent epoch value — the resulting timestamp identifies the same instant everywhere in the world.