Convert times between different time zones around the world
The world is divided into 24 standard time zones, each roughly 15 degrees of longitude wide. Times are expressed as offsets from Coordinated Universal Time (UTC). For example, Eastern Standard Time is UTC-5, meaning it's 5 hours behind UTC. This converter calculates the difference between any two zones and adjusts the time accordingly.
In our globally connected world, coordinating across time zones is essential for business meetings, international travel, remote work, and staying in touch with people abroad. Miscalculating time differences can lead to missed calls, late arrivals, or scheduling conflicts. A reliable converter eliminates guesswork and prevents costly mistakes.
Many regions observe Daylight Saving Time (DST), shifting clocks forward one hour in spring and back in fall. Not all countries participate—Arizona, Hawaii, and most of Asia and Africa skip DST entirely. This means time differences between two cities can change twice a year, making manual conversion tricky without a tool.
When scheduling across time zones, always specify the time zone (e.g., "3 PM EST"). Use UTC for international coordination to avoid confusion. Consider the International Date Line—crossing it changes the calendar date. For recurring meetings, pick a time that falls within business hours for all participants whenever possible.
UTC (Coordinated Universal Time) is the primary time standard by which the world regulates clocks. It's essentially the same as GMT (Greenwich Mean Time) and is used as a reference point for time zones.
EST (Eastern Standard Time) is UTC-5, used in winter. EDT (Eastern Daylight Time) is UTC-4, used during daylight saving time in summer. The switch happens in March and November.
Yes, our converter uses the Intl.DateTimeFormat API which automatically accounts for daylight saving time based on the current date and the selected time zones.