What is time zone converter?
A time zone converter helps you schedule calls, webinars, live streams and deadlines with people in other countries. Instead of doing the math by hand, you enter one time and read the matching local time in many cities.
Daylight saving time makes mental math risky, because the gap between two cities changes during the year. This tool uses the time zone database built into your browser, so it applies the rules for the date you pick.
How to use the time zone converter
- Choose the date and time of your meeting or event.
- Select the time zone that time belongs to.
- Press Calculate and read the table of local times.
How the time zone converter works
The tool turns your entered time into a single universal moment using the rules of the chosen zone, then formats that moment for each city with the browser's Intl time zone support.
Worked example
Common uses of the time zone converter
- Setting a meeting between teams in Toronto, London and New York.
- Choosing a good time for a live stream or webinar for a global audience.
- Checking when a product launch happens in each region.
- Calling family abroad without waking them.
- Converting a flight arrival time into your own time.
Tips and common mistakes
When you invite people from several countries, write the time in UTC as well as local time to avoid mistakes.
Check the date as well as the hour. Late evening in Asia can be the previous day in the Americas.
Background: what to know before you rely on it
Time zones exist because the sun reaches different places at different times. Before railways, each town kept its own local time. Standard zones were created in the nineteenth century to keep train timetables sane. Today there are more than thirty zones, some with half hour or forty five minute offsets, such as India and Nepal. Daylight saving time makes things harder, because countries change clocks on different dates, so the gap between two cities can shift for a few weeks each year. The safest way to share a time is to write it with the city or with UTC, for example 14:00 UTC.
Private, free and fast
This tool runs entirely in your browser. What you type or choose is not uploaded to a server and is not saved after you close the page, which keeps it fast and private. It is free to use as often as you like. See more in all date and time tools, or browse the full list of tools.
Frequently asked questions
How do I convert time between time zones?
Choose the original time and zone, then read the matching times in the table. The tool applies daylight saving rules automatically.
Does it handle daylight saving time?
Yes, for the date you select.
Which time zones are included?
Sixteen major zones across the Americas, Europe, the Middle East, Asia and Oceania.
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Results are for information and education. For legal, financial, medical or security decisions, check with a qualified professional. For legal deadlines, confirm how your contract or court counts days.