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Free Online Unix Timestamp Generator

Convert an ISO instant with explicit offset to Unix seconds.

Your input stays on this device. Processing is bounded; regex runs in a worker with a two-second timeout.

Result



How to use Unix Timestamp Generator
Convert an ISO instant with explicit offset to Unix seconds. Calendar dates use Gregorian rules. Instants require an explicit UTC offset; Unix timestamps use seconds, not milliseconds. Endpoints and timezone choices are shown beside the controls.
  1. Set ISO timestamp with UTC offset.
  2. Run the tool, review the result and its stated limitations, then copy or download if needed.
Example & practical use
Convert an ISO instant with explicit offset to Unix seconds. The example below demonstrates ISO timestamp with UTC offset.
Example input:
{
  "instant": "1970-01-01T01:00:00+01:00"
}
Expected result (relevant fields):
0
Features & result limitations
Calendar dates use Gregorian rules. Instants require an explicit UTC offset; Unix timestamps use seconds, not milliseconds. Endpoints and timezone choices are shown beside the controls.
Frequently asked questions
What inputs does Unix Timestamp Generator accept?
ISO timestamp with UTC offset
How should I interpret the Unix Timestamp Generator result?
Calendar dates use Gregorian rules. Instants require an explicit UTC offset; Unix timestamps use seconds, not milliseconds. Endpoints and timezone choices are shown beside the controls.
Where does Unix Timestamp Generator process my data?
Inputs are processed locally in your browser. Submitted text is not sent to external services. A successful-run event increments an aggregate tool counter without your input.