Time Zone Converter

How to use the time zone converter

1. Choose the zone your time is in — yours is preselected.
2. Pick a date and time, or leave it empty for right now.
3. Toggle the zones you care about and read the table.

About this tool

Pick a time in one zone and see it everywhere else at once, with each row marked as working hours, outside them, or probably asleep — which is the actual question when scheduling across continents.

Offsets are not fixed, and that is where most manual conversions go wrong. Daylight saving moves them, and the changeover dates differ between countries: the gap between London and New York is five hours for most of the year but four for about two weeks each spring. Because this converts at the exact moment you choose using the browser's time zone database, picking the real meeting date matters when it falls near a changeover.

When no time is entered it acts as a live world clock, updating as you watch.

Common uses

• Finding a meeting slot that suits three continents.
• Checking whether it is a reasonable hour to call someone.
• Converting a webinar time for an audience elsewhere.

Frequently asked questions

Why does the offset change during the year?

Daylight saving. Countries shift on different dates, so the gap between two places is not constant — which is why converting at the actual meeting date matters.

Where do the time zone rules come from?

Your browser's built-in IANA time zone database, the same source operating systems use. No lookup is made over the network.