Time Zone Difference (World Clock)

About this calculator

This tool shows the current local time in two chosen cities side by side and the exact time difference between them, correctly accounting for each location's UTC offset and whether either city is currently observing daylight saving time, which is often the part people get wrong when doing this in their head. Because DST start and end dates differ by country, the gap between two cities can actually change by an hour at certain times of year even though neither city's own clock changed.

It is used by remote teams and freelancers scheduling a meeting across time zones, by people planning a call with family or friends abroad, and by travelers figuring out what time it will be at their destination when they land. Anyone who has been burned by joining a video call an hour early or late because of a DST mismatch tends to start double-checking with a tool like this instead of doing the math manually.