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Time Zone Converter

Pick a date, a time and a place, and see what time it is everywhere else on your list. Daylight saving time is handled for every date.

Convert a time

    Runs on your device. Nothing you enter is sent to a server.

    How time zones work

    Every time zone is defined by its offset from Coordinated Universal Time (UTC), the reference clock of the world. New York is UTC−5 in winter, Berlin UTC+1, Tokyo UTC+9. To convert a time, you subtract the offset of the place you start from and add the offset of the place you want.

    Daylight saving time makes this harder, because many regions move their clocks one hour forward in spring and back in autumn, and not on the same days. The US switches on the second Sunday in March and the first Sunday in November, the EU on the last Sundays of March and October, and Australia the other way around. So for a few weeks each year, the gap between New York and London is four hours instead of five. This converter uses your browser's time zone database and gets these dates right.

    UTC offsets of major cities

    CityStandard timeDaylight saving time
    Los AngelesUTC−8UTC−7
    ChicagoUTC−6UTC−5
    New YorkUTC−5UTC−4
    São PauloUTC−3no DST
    LondonUTCUTC+1
    Berlin, Paris, MadridUTC+1UTC+2
    DubaiUTC+4no DST
    IndiaUTC+5:30no DST
    Singapore, Hong Kong, BeijingUTC+8no DST
    Tokyo, SeoulUTC+9no DST
    SydneyUTC+10UTC+11

    How to use the time zone converter

    1. 1Set the date and time, and the city or time zone they belong to. "Now" fills in the current time.
    2. 2Add the cities you want to compare. You can type a city, a zone like Europe/Paris, or a short name like PST or IST.
    3. 3Read the local time, date and offset for each place. Copy the result for an invitation, or copy a link to share the exact comparison.

    Tips for meetings across time zones

    • Watch the date. A call at 6 PM in Los Angeles is already the next morning in Tokyo. The converter marks the next and previous day.
    • Mind the switch weeks. In March and October/November, the US and Europe change their clocks on different dates, so recurring meetings shift for a few weeks.
    • Name the zone in invitations. Write "3 PM Berlin time" rather than "3 PM CET", because CET becomes CEST in summer.

    Frequently asked questions

    Does the converter handle daylight saving time?

    Yes. It uses the time zone database built into your browser, which knows when each region switches between standard and daylight time, including past and future dates. Pick the date you care about and the offsets are correct for that day.

    What happens with a time that does not exist?

    When clocks spring forward, one hour is skipped, for example 2:30 AM on that night in New York. The converter tells you and shows the time the clocks actually reach. When clocks fall back and an hour repeats, it uses the first of the two.

    What is the difference between UTC and GMT?

    For everyday use there is none: both are the reference time at zero offset. UTC is the precise atomic time standard, GMT is the time zone used in winter in the UK. In summer, London switches to BST, which is UTC+1.

    Why do some places have half-hour offsets?

    Countries choose their own offset. India uses UTC+5:30 for the whole country, Nepal UTC+5:45 and parts of Australia UTC+9:30. The converter shows minutes whenever an offset is not a whole hour.

    Is anything sent to a server?

    No. All conversions run in your browser. If you copy a share link, the date, time and zones you picked become part of that link.