JavaScript Date Formatter
Convert any date into ISO, UTC, local and Unix formats. Free, private and instant.
About the JavaScript Date Formatter
Dates appear in many formats across APIs and logs. Converting one value to ISO, UTC, local and Unix shows how each system will read it.
When to use it
Use it to debug timezone issues, build query parameters, or check what a timestamp means in your local time.
How to use the JavaScript Date Formatter
- Enter or paste your input in the fields above.
- The result updates as you type, or press Run.
- Press Copy to copy the output.
Frequently asked questions
Is the JavaScript Date Formatter free?
Yes. It is completely free, with no signup and no usage limits.
Is my data uploaded anywhere?
No. Everything runs locally in your browser, so what you type never leaves your device.
Does the JavaScript Date Formatter work on mobile?
Yes. The tool is responsive and works on phones, tablets and desktops.
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