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Time Zone Converter

Convert a time from one city to anywhere in the world, see the time difference and find a meeting time that works for everyone. Daylight saving is handled automatically.

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    Time difference
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    Meeting planner

    Tap an hour and every city jumps to it. Green ticks in the “Overlap” row mark hours that fall within everyone’s working day.

    How to use the time zone converter

    1. Type a city, country, abbreviation (EST, CET, GMT) or an offset such as UTC+5 into the box below the list and pick a match. Your own time zone is added first automatically.
    2. Tap the time on any card and type a new one (e.g. 3:30 pm, 1530 or 15:30). Every other city converts instantly. Use the calendar to change the date and the slider to scrub through the day.
    3. Press Move to top to make a city the reference; the slider, date and planner then follow its clock. Now returns to the live time.
    4. The meeting planner marks the hours that fall within everyone’s working day. Share the result with Copy times, or send the exact comparison with Copy link.

    How time zones and time differences work

    The world is divided into time zones, most about 15 degrees of longitude wide, and every local time is defined as an offset from UTC (Coordinated Universal Time). The difference between two places is simply the difference between their offsets: New York is UTC−5 in winter and London is UTC+0, so London is 5 hours ahead — 2:00 pm in New York is 7:00 pm in London. The converter does this for you and flags when the other city is already on the next day (+1 day) or still on the previous one.

    Daylight saving time

    In the United States and Canada clocks spring forward on the second Sunday in March and fall back on the first Sunday in November. The European Union changes on the last Sunday in March and the last Sunday in October. Because the dates differ, the gap between New York and London shrinks from 5 to 4 hours for a few weeks each spring and autumn — a classic cause of missed calls. In the southern hemisphere (Australia, New Zealand, Chile) daylight time runs from October to April. Many places, including Arizona, Japan, India, China and Turkey, do not change their clocks at all. The tool uses your browser’s up‑to‑date time zone database: a “DST” badge shows when a city is on daylight time, and any clock change in the next 60 days is listed with its date.

    Half‑hour and quarter‑hour zones

    Not every zone is a whole number of hours from UTC. India uses UTC+5:30, Iran UTC+3:30, Newfoundland UTC−3:30, Nepal UTC+5:45 and Adelaide UTC+9:30. Try New York, New Delhi and Kathmandu to see the minutes shift as well; the planner shows these as “:30” and “:45”.

    Scheduling across time zones

    For remote teams, the hard part is finding an hour when everyone is awake and at work. In the meeting planner each row is one city’s day: green cells are working hours, amber cells are early morning or evening, and purple cells are night. Adjust the working day to suit your team. When there is no overlap — Los Angeles, London and Tokyo is a famous example — the tool suggests the least painful slot instead.

    Abbreviations can be ambiguous: CST is both US Central (UTC−6) and China Standard Time (UTC+8), and IST means India, Ireland or Israel depending on who you ask. When you send an invite, naming the city or the UTC offset is the safest choice. Everything is calculated in your browser; nothing is sent to a server.

    Frequently asked questions

    What is the time difference between EST and PST?

    Pacific Time is 3 hours behind Eastern Time all year, because both regions switch to daylight saving on the same dates. When it is 12:00 pm in New York (EST/EDT), it is 9:00 am in Los Angeles (PST/PDT).

    How many hours ahead is London from New York?

    London is usually 5 hours ahead of New York. For a few weeks in March and in late October/early November the gap is 4 hours, because the US and the UK change their clocks on different dates.

    Is UTC the same as GMT?

    For everyday use they show the same time. UTC is the scientific standard kept by atomic clocks, while GMT is the time zone name used in the UK and parts of Africa. London uses GMT (UTC+0) in winter and BST (UTC+1) in summer.

    Does the converter account for daylight saving time?

    Yes. It uses the time zone database built into your browser, so it knows which cities observe daylight saving on the date you pick. Upcoming clock changes are shown on each card with their date.

    Are my cities saved?

    Your list and settings are stored only in this browser on this device, so they are there next time you visit. Copy link lets you share the exact comparison with someone else. Nothing is sent to a server.