Date & Time calculator
Unix Timestamp Converter
Convert between Unix timestamps and human-readable dates.
About the unix timestamp converter
The Unix timestamp converter converts between Unix timestamps (seconds since Jan 1, 1970) and human-readable dates.
How to use this calculator
- 1
Enter timestamp
Enter a Unix timestamp in seconds or milliseconds.
- 2
View results
See the corresponding date in local time and UTC.
How the calculation works
Unix timestamp is seconds since Jan 1, 1970 00:00:00 UTC. Converts to local and UTC date/time.
Example: 1700000000 = Nov 14, 2023 at 22:13:20 UTC.
How date calculations work
Calendar math is trickier than it seems. Months have 28–31 days, leap years add an extra day every four years (except century years not divisible by 400), and time zones complicate exact hour counts. Our calculators use UTC-based date arithmetic to ensure consistent results regardless of your local time zone.
Important limitations
This tool provides a mathematical estimate based only on the values entered. It does not account for regulations, taxes, lender fees, market conditions, or individual circumstances. Results are for planning purposes only — consult a qualified professional for regulated, medical, financial, or construction decisions.
Frequently asked questions about unix timestamp converter
How accurate is the unix timestamp converter?+
The calculation follows the displayed formula and retains full numeric precision before formatting the result.
Can I use the result professionally?+
Use it as a planning estimate. Confirm regulated, medical, financial, or construction decisions with a qualified professional.