Timezone Tools
Pick a date, a time, and two zones — get the converted time, with daylight saving handled automatically for both ends.
Each zone in the list is a real IANA timezone name (like America/New_York), not a fixed UTC offset — which means the conversion automatically accounts for daylight saving time on both ends, on whatever date you pick, rather than assuming a year-round fixed gap between zones that's only sometimes true.
For scheduling a call across several timezones at once rather than converting a single moment, use the Meeting Time Planner instead. For the current time right now rather than a specific date you choose, see the World Clock.
Related
Find overlapping working hours across several timezones at once.
The current time right now in major cities, live.
When a zone's clocks change next, so conversions don't go stale.