Time Zone Converter
Convert time between time zones and cities worldwide, with daylight saving time handled automatically. Compare several cities and plan meetings.
What it does
This converter shows what time it is, or what time it will be, in several cities at once. Choose a date and time in one city and see the matching local time everywhere else, including the day of the week and whether it falls on the previous or next day. Daylight saving time is applied automatically using the official time zone database built into your browser, so changes in March, October or any other date are handled for each place. The 24-hour grid helps you find a meeting time that works for everyone.
How to use it
- Pick the date and time, and the city that time refers to, or press Now for the current time.
- Add the cities you want to compare by typing a city, a country, an abbreviation such as EST or an offset such as UTC+2.
- Read the time in each city, or click an hour in the grid to try another time. Copy the link to share the comparison.
Frequently asked questions
Does it handle daylight saving time?
Yes. Each city follows its own rules, including the countries that never change their clocks and those in the southern hemisphere, where summer time runs from October to March. When the clocks jump forward, one hour does not exist that day; when they go back, one hour happens twice. The converter warns you in both cases.
What is the difference between UTC and GMT?
UTC (Coordinated Universal Time) is the time standard the world's clocks are based on. GMT is the time zone of London in winter and, in everyday use, means the same time as UTC. Time zones are written as an offset from UTC, for example UTC−3 for São Paulo or UTC+9 for Tokyo.
Why does a city show the previous or next day?
Because at that moment it is already past midnight there, or not yet. When it is 23:00 on Monday in São Paulo, it is already 11:00 on Tuesday in Tokyo. The converter marks those cities so that you schedule on the right date.
How up to date are the time zone rules?
The rules come from the IANA time zone database that your browser includes and updates with every browser update. When a country changes its clocks, keeping your browser up to date is enough. Your list of cities stays saved in this browser only.