Time Zone Converter
Enter a date and time in your local zone, pick a target time zone, and see the converted time — DST handled automatically.
Convert time
How time zone conversion works
Every moment in time is absolute; time zones just label it with different clock readings. Conversion = your local time → UTC → target zone's local time, applying that zone's UTC offset and daylight-saving rules for the exact date.
Frequently asked questions
How do time zone converters work?
They take a moment in time and re-express it in another zone's local clock, accounting for each zone's UTC offset and daylight saving rules on that date.
What is the time difference between New York and London?
Usually 5 hours (London ahead), but 4 hours for a few weeks each year because the US and Europe start and end daylight saving on different dates.
What does UTC mean?
UTC (Coordinated Universal Time) is the global time standard. Every time zone is defined as an offset from UTC, e.g. UTC+9 for Tokyo.
Do time zones observe daylight saving?
Some do, some don't — and switch dates differ by region. This converter uses your browser's built-in time zone database, so DST is applied correctly for the date you enter.
What is the best time for a meeting across US and Asia?
There is no perfect overlap: try early morning US / evening Asia, or use this converter to test a few slots against everyone's local time.