Time Zone Converter
Convert a date and time from one time zone to another.
Pick a date and time, choose the source and target time zones, and see the converted local time. Daylight saving is handled by your browser, so results match the real clock. All local.
Converted time
Sunday, October 18, 2026 at 10:52:00 PM GMT+9
Formula & methodology
The entered wall-clock time is interpreted in the source zone, converted to a UTC instant using the browser Intl engine, then formatted in the target zone (including DST).
Worked example
- 09:00 in Asia/Tokyo → 00:00 in UTC (same day)
Frequently asked questions
Does it handle daylight saving time?
Yes. Conversions use your browser's time zone database, which includes DST rules.
Is my data sent anywhere?
No. All conversion happens locally in your browser.
Privacy
All processing happens locally in your browser. Your data is never uploaded.