Compare current time across multiple cities. Add locations, see local date and time with timezone, and share a link with your selection.
Search and add at least one city above to compare times.
A timezone converter is a tool that shows the same moment in time in different places around the world. When it is 9:00 in London, what time is it in Tokyo, New York, or Sydney? Because the Earth is divided into time zones—roughly one per 15° of longitude—the clock time and even the calendar date differ from one city to the next. A timezone converter answers that in one view: you pick a reference time and see the equivalent local time (and date) for every city you add.
This free world time converter and world clock lets you add as many cities as you need, adjust the reference moment with a 15-minute step slider, and share a link so colleagues, clients, or friends see the same comparison without recalculating. Use it as a time difference calculator to find the exact gap between two cities, or simply compare time zones before scheduling a meeting or booking a flight.
Converting between time zones is useful whenever people or events span more than one region. Common situations include:
When it is 9:00 on Monday morning in London (GMT/BST), it is 4:00 in New York (EST/EDT) and 17:00 or 18:00 in Tokyo (JST), depending on British Summer Time. So a morning meeting in London is still the previous evening in New York and late afternoon or early evening the same day in Tokyo.
Sydney is often 17–19 hours ahead of Los Angeles. When it is 10:00 Monday in Sydney, it can still be Sunday afternoon in LA. That difference is important when planning live events, releases, or support windows that need to cover both regions.
The same moment can fall on different calendar days. When it is 23:30 on Tuesday in London, it is already 07:30 or 08:30 on Wednesday in parts of Asia. Deadlines like “end of day Tuesday” must be defined by timezone (e.g. end of day Tuesday in the contract’s governing timezone) to avoid confusion.
Time zones are based on the rotation of the Earth. The planet is divided into 24 main zones (in practice there are more because of half-hour or 15-minute offsets). Each zone is usually one hour apart from its neighbours. Times are often expressed as an offset from UTC (Coordinated Universal Time), for example UTC+1 for Paris in winter or UTC-5 for New York (Eastern Standard Time).
Many countries use daylight saving time (DST): clocks move forward by one hour in spring and back in autumn. So the same place can have different offsets at different times of the year (e.g. London is UTC+0 in winter and UTC+1 in summer). Our converter uses the correct offset for the date and time you choose, so you always see the right local time.
Because of timezone offsets, the same instant can fall on different calendar days in different places. For example, when it is late evening on Tuesday in Europe, it can already be Wednesday morning in Asia. The converter shows the local date and time for each city, so you see exactly when it is there.
The slider bar is coloured by hour type in the first location’s timezone: green for typical working hours (e.g. 9–17), amber for non-working evening hours, and rose for typical sleeping hours. The emoji next to each city’s time shows the same for that city’s local time: working, non-working, or sleep. This helps you quickly see when it is a good time to call or schedule.
Yes. Use the “Copy link” button below the slider. The link includes your chosen cities and the selected time. Anyone opening it will see the same comparison without having to search or set the time again.
You can add as many cities as you need. The list grows with each search and selection. Remove individual cities with the trash icon or clear all with “Remove all” to start over.
Yes. The times shown use each location’s correct offset for the date and time you select, including daylight saving time where it applies. So you always see the real local time.
The slider moves in 15-minute steps so you can quickly try different reference times (e.g. 9:00, 9:15, 9:30) without typing. Many meetings start on the hour or half-hour, so 15-minute steps cover typical scheduling needs.