Check log timestamps in seconds or milliseconds and convert them into readable GMT dates.
Timestamp converter
Convert Unix seconds and milliseconds into readable GMT and local dates, then turn human-friendly dates back into Unix values.
Quick samplesUseful for testing
Epoch/Unix Converter
About this tool
Use this Unix timestamp converter to turn seconds or milliseconds into readable dates, then convert readable dates back to Unix time.
No signup requiredRuns in your browserInstant results
Turn release or event dates into Unix values for APIs, databases, or scheduled jobs.
Compare Unix seconds, milliseconds, ISO strings, and local date output in one place.
Why use this tool?Key benefits
Works instantly
Paste your input and get the result immediately — no page reload, no waiting, no configuration needed to get started.
Your data stays private
All Epoch/Unix Converter processing runs locally in your browser. Nothing you paste is sent to a server or stored anywhere.
Focused workspace
A dedicated page for Epoch/Unix Converter means a clean, distraction-free workspace you can bookmark and come back to anytime.
Frequently asked questionsCommon questions answered
These answers explain common epoch/unix converter tasks, expected input formats, and edge cases so both visitors and search engines can understand what this tool does.
What is the difference between Unix seconds and Unix milliseconds?
Unix seconds count whole seconds since January 1, 1970, while Unix milliseconds count thousandths of a second from the same point in time. Many APIs use one or the other depending on precision needs.
How do I know whether a timestamp is in seconds or milliseconds?
A 10-digit value is usually Unix seconds and a 13-digit value is usually Unix milliseconds. This tool accepts both and converts them into readable output.
Why does the date to timestamp converter ask for a timezone?
The same local date and time can represent different moments depending on timezone. Choosing GMT or your local timezone makes the conversion explicit and prevents ambiguous results.
Can I compare GMT output with my local time?
Yes. The timestamp output includes ISO output, GMT output, local output, and Unix values so you can compare the same instant in multiple representations.