Convert times across the world. This free time zone converter changes a date and time from one zone to another, daylight-saving aware, showing the converted local time, the difference and UTC.
Enter a date and time in the “from” zone, then pick the “to” zone. Conversions are daylight-saving aware, using your browser’s time-zone data. Leave date blank to use today.
Times are converted through UTC using the offset each zone has on that date, so daylight saving is handled automatically. Some zones change their clocks on different dates each year.
What This Time Zone Converter Does
This time zone converter turns a date and time in one zone into the equivalent local time in another, automatically accounting for daylight saving time in both zones. It also shows the time difference between zones and the corresponding UTC time.
How the Conversion Works
The converter finds the exact UTC instant that corresponds to your entered date and time in the “from” zone, using that zone’s actual offset on that specific date – then displays that same instant in the “to” zone’s local time. This two-step process through UTC is what makes daylight saving time handled correctly, since each zone’s offset can differ depending on the date.
For example, 3:00 PM in New York (Eastern Daylight Time, UTC-4) in August converts to 8:00 PM in London (British Summer Time, UTC+1) – a 5-hour difference.
Why Time Differences Change Throughout the Year
Many countries observe daylight saving time, but they don’t all start and end it on the same dates – some don’t observe it at all. This means the time difference between two cities can shift by an hour at certain points in the year, which is why a converter needs to check each zone’s actual offset for the specific date entered, not just a fixed year-round difference.
Why UTC Is Shown
UTC (Coordinated Universal Time) doesn’t observe daylight saving and serves as the common reference point behind every time zone conversion. Showing the UTC equivalent is useful for scheduling international meetings, server logs, or any context where a single unambiguous reference time matters.
How to Use the Time Zone Converter
- Enter a date and time (leave the date blank to use today).
- Choose the “from” zone the time is currently in.
- Choose the “to” zone to see the converted local time, difference and UTC.
Also need to convert measurements? Try our Unit Converter.