Toolwinder
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Timestamp Converter

Convert between Unix timestamps, ISO 8601, UTC, and local time. Runs completely in your browser.

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About This Tool

Converts between Unix timestamps, ISO 8601 strings, and local or UTC time, auto-detecting whether a pasted timestamp is in seconds or milliseconds. A live-updating current timestamp at the top saves you from looking it up separately.

Frequently Asked Questions

Does this handle both seconds and milliseconds?+
Yes. The tool auto-detects whether your input is in seconds or milliseconds based on its magnitude, so you don't need to specify.
What timestamp formats can I convert between?+
Unix timestamps, ISO 8601 strings, local date/time, UTC, and human-readable relative time (e.g. '3 hours ago').
Is the current timestamp live?+
Yes, the current Unix timestamp at the top updates every second, and you can copy it or load it into the converter with one click.

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