Time Zone Converter & Meeting Planner

Time Zone Converter & Meeting Planner lets you compare the local time in any cities side by side and find the best time to meet across time zones — free, fast and with no sign-up. Add the cities your team, family or clients are in, and a live world clock shows each one’s current time, date and UTC offset at a glance.

Drag the shared 24-hour timeline to convert any moment between zones, or let the planner highlight the window that falls inside everyone’s working hours. Each city’s working day is shaded in green, a “best time to meet” banner picks the slot that works for the most people, and a world map colours each city by day or night so you can see where the sun is.

It handles daylight saving time automatically, works for every IANA time zone on Earth, and lets you share a link to a proposed time in one tap. Use it to schedule a global call, plan a trip, time a message to a friend abroad, or simply answer “what time is it there right now?”

Time Zone Converter & Meeting Planner App

How to use it

1. Add the cities you want to compare — start typing a city name in the search box, or tap a popular-city chip. Press My city to add the one nearest you.
2. Set the date and time in your reference city (the highlighted row), or drag the blue time bar to scrub through the day.
3. Read each city’s local time, date and UTC offset; a +1d / −1d tag appears when it’s a different calendar day there.
4. Set your working hours, then use the best-overlap banner — tap Jump to best time to land on the window that suits the most cities.
5. Switch between Planner and List view, toggle 12/24-hour time, open the Map, and press Share to copy a link to your chosen time.

How to find the best time to meet across time zones

The hard part of scheduling across time zones isn’t the conversion — it’s finding a slot that is daytime for everyone. The planner solves that visually: each city’s working hours are shaded green on one shared 24-hour timeline, so the overlap (or the painful lack of it) is obvious at a glance. The best-overlap banner scans the whole day and names the window that lands inside working hours for the most cities, and the world map shows which cities are in daylight versus night. If no time works for everyone, widen the working-hours range or drop the hardest city and the suggestion updates instantly.

Time zone converter vs meeting planner — which do you need?

Reach for the converter (the list view) when you have one moment in mind — “my 2 PM call, what time is that for everyone?” — and want a clean table you can copy into an email. Reach for the planner (the timeline view) when you’re still choosing the time and need to see, across the day, where everyone’s working hours overlap. Both are driven by the same selected instant, so you can flip between them without losing your place.

UTC, GMT and daylight saving time, explained

Every time zone is described by its offset from UTC — the global reference time. New York in winter is UTC-5; London is UTC+0; India is UTC+5:30. Offsets aren’t fixed: most of North America, Europe and the southern hemisphere shift their clocks for daylight saving time, so a city’s offset (and the gap between two cities) changes by an hour at different times of year — and the two hemispheres switch in opposite seasons. That’s why doing the maths by hand is error-prone. This tool reads the live IANA rules for the exact date you pick, so the answer is always the one that will actually be on the clock that day.

Where the data comes from

Time-zone conversions are computed entirely in your browser using the IANA time zone database (the same database that powers operating systems worldwide), so they are daylight-saving aware and always current. The city list is built from SimpleMaps World Cities (CC BY 4.0) via the open city-timezones dataset, and each city carries its authoritative IANA zone. Worldwide place search uses Photon (© OpenStreetMap contributors), and the map basemap is © CARTO and © OpenStreetMap contributors.

Coverage and accuracy

Every IANA time zone on Earth is supported, and the built-in list covers about 1,350 major cities across 224 countries and territories — enough for almost any meeting. Anything not in the list is reachable through worldwide search. Times for cities picked from the list are exact; only zones detected for arbitrary remote points near a border are approximate. The clocks tick live and recompute for any past or future date you choose.

Frequently asked questions

How do I convert a time between time zones?

Add the cities you care about, then set the date and time in your reference city (or drag the time bar). Every other city instantly shows the matching local time, date and UTC offset — so 3:00 PM in New York reads as 8:00 PM in London and 4:00 AM the next day in Tokyo. Switch to the list view for a clean, copyable converter table.

How do I find the best time for a meeting across time zones?

The planner shades each city’s working hours in green on a shared 24-hour timeline and highlights the window that falls inside working hours for the most cities. The “best overlap” banner names that window, and one tap jumps the whole board to it. Widen or narrow the working-hours range to match your team.

What is the difference between a time zone converter and a meeting planner?

A time zone converter answers “what time is it there?” for a single moment across places. A meeting planner adds working-hours awareness, so across a whole day you can see which times work for everyone at once. This tool does both: drag the bar to convert any instant, or use the overlap finder to schedule.

Does it handle daylight saving time (DST)?

Yes. All times are computed with the IANA time zone database built into your browser, which encodes every daylight-saving rule and historical change. When a city is on summer time its offset and label update automatically and a DST badge appears — and a meeting set for a future date uses the rules in force on that date.

What is the difference between UTC and GMT?

UTC (Coordinated Universal Time) is the modern global time standard; GMT (Greenwich Mean Time) is an older term for the mean solar time at 0° longitude. For everyday scheduling they are the same, and every city’s offset is shown relative to UTC — for example UTC-5 or UTC+5:30.

Can I add any city in the world?

The search box covers about 1,350 major cities instantly and offline. For anywhere else it falls back to a worldwide place search and detects the time zone from the location. Cities picked from the built-in list carry their exact official zone; zones detected for remote points near a border are approximate.

How do I share a meeting time?

Press Share to copy a link that encodes your cities, the selected time and your settings. Anyone who opens it sees the same board — handy for proposing a time in a chat or email. The link updates as you change the board.

What time zone does it use for me?

By default it uses your device’s own time zone, as reported by your browser — no location permission needed. Press “My city” to add the nearest city to your location, or simply search for your city and set it as the reference.

How accurate are the time zones near borders?

Cities chosen from the built-in list use their authoritative IANA zone, so they are exact. The worldwide search maps an arbitrary point to a zone using an offline boundary dataset, which can be off near time-zone borders in sparsely populated areas — pick the nearest named city if in doubt.