About this Unix Timestamp Converter
Unix Timestamp Converter provides two-way conversion between human-readable date/time input and Unix seconds used in many systems and APIs.
Formula or method
Unix time counts seconds elapsed since 1970-01-01 00:00:00 UTC, excluding leap seconds.
Example
Timestamp 0 corresponds to 1970-01-01 00:00:00 UTC.
Common uses
- Debug API timestamps.
- Convert a local date/time to Unix seconds.
- Read a Unix timestamp as a UTC date.
How to use this tool
- Enter the values or text requested by the calculator.
- Choose units or options when the tool provides them.
- Select the calculation button and review the result.
- Use the formula, example and notes on this page to check whether the result fits your situation.
Important note
Date-to-timestamp mode interprets the browser date/time input in your local time zone; timestamp-to-date output is shown in UTC.
Frequently asked questions
Are timestamps in seconds or milliseconds?
This tool uses Unix seconds.
Which time zone is used for timestamp output?
Timestamp-to-date output is displayed in UTC.