Time Zone Converter

About the Time Zone Converter

A time zone calculator converts a time from one part of the world to another, telling you exactly what time it is elsewhere so you can schedule calls, coordinate with distant teams, catch live events, and avoid the classic mistake of waking a colleague at 3 a.m. In an era of remote work, global teams, and international friends and family, working across time zones is a daily reality, and getting it wrong has real consequences: missed meetings, blown deadlines, and confusion over which "Tuesday" a call actually falls on. The challenge goes beyond simply adding or subtracting hours, because the world's time zones are shaped by politics and geography as much as by longitude, and many regions shift their clocks twice a year for daylight saving time — but not all regions, and not on the same dates. Our calculator handles the conversion between locations, accounting for their UTC offsets, so you can find a common meeting time or translate a specific moment from one place to another quickly and reliably, without counting on your fingers or getting caught out by a daylight saving change.

How It Works

Every time zone is defined by its offset from Coordinated Universal Time (UTC), the global reference standard. New York in standard time is UTC−5, London is UTC+0, Tokyo is UTC+9, and so on. To convert a time from one zone to another, you translate the source time to UTC by removing its offset, then apply the destination's offset. The practical complication is daylight saving time (DST): many regions in North America, Europe, and parts of the southern hemisphere advance their clocks by an hour in spring and set them back in autumn, which changes their UTC offset for part of the year. Crucially, not all places observe DST — much of Asia, Africa, and equatorial regions do not — and those that do switch on different dates, so the time difference between two cities is not fixed year-round. This is why a call that was five hours apart in January might be four or six hours apart in July. A reliable time zone calculator accounts for each location's current offset, including whether DST is in effect, so the conversion reflects the actual clock time on the ground rather than a naive fixed difference.

Tips & Best Practices

• ✓Time differences aren't fixed year-round. Daylight saving time changes a region's UTC offset for part of the year, so two cities that are five hours apart in winter might be four or six apart in summer.
• ✓Not everywhere observes daylight saving. Much of Asia, Africa, and equatorial regions keep the same offset all year, while North America and Europe shift twice annually on different dates.
• ✓When scheduling recurring cross-border meetings, re-check the time after any country in the group changes its clocks. A standing call can drift by an hour if one side springs forward and the other doesn't.
• ✓Always confirm the date, not just the time. A late-evening call in one hemisphere can land on the following morning in another, so specify the day explicitly to avoid a 24-hour mix-up.
• ✓Use UTC as a neutral reference when coordinating across many zones. Stating an event in UTC lets everyone convert to their own local time without ambiguity.
• ✓Beware the international date line. Crossing it changes the calendar day, which trips up travellers and anyone scheduling between, say, the US west coast and Australia or New Zealand.
• ✓Some zones use half-hour or 45-minute offsets — India is UTC+5:30, Nepal is UTC+5:45, and parts of Australia use +9:30 — so don't assume every offset is a whole number of hours.
• ✓For important meetings, share a calendar invite with the time zone attached rather than a typed-out time. Calendar software converts automatically for each attendee and removes the guesswork.

Who Uses This Calculator

Remote workers and distributed teams use a time zone calculator constantly to schedule meetings that fall within reasonable working hours for everyone, and to find the overlap where colleagues in different regions are all awake and available. People arranging international calls with clients, partners, or family use it to pick a time that isn't the middle of the night for the other party. Travellers use it to know the local time at their destination before they arrive, to plan arrival calls home, and to manage jet lag by anticipating the shift. Anyone watching a live event — a sports match, a product launch, a webinar, or a broadcast scheduled in another country's time zone — uses it to work out when it starts locally. Freelancers and consultants working with overseas clients use it to set expectations about availability and deadlines that span the international date line. Event organisers publishing schedules for a global audience use it to communicate times clearly across regions. Because daylight saving changes shift offsets seasonally, people who coordinate recurring cross-border meetings use it to check whether a standing call time still works after the clocks change in one country but not the other.