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Time zone converter
Convert an appointment between places. Simple, private, right in your browser.
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A LITTLE GUIDANCE
How to use this tool
- Enter a local date and time and its source zone.
- List up to twelve destination IANA time zones.
- Convert; if daylight saving creates an ambiguous time, explicitly select earlier or later.
A worked example
2026-01-15 09:00 America/New_York → 14:00 UTC; a DST-gap input is rejected or resolved explicitly.
What to know
The conversion uses time-zone rules supplied by the runtime. Future rules may change. By default, repeated or nonexistent local times are rejected instead of silently choosing an instant.
Supported inputs and limits
Source dates from 1900 through 2100; up to 12 destination zones.
Where is my data processed?
In your browser. Cloud saving is optional: only the supported inputs, settings or files you explicitly choose are uploaded. Download or save anything you want to keep before closing the page. Read our privacy details.
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