Convert Time Zones
Planning a call across continents or reading a deadline given in another city's time? Pick a date and time, and see it in every time zone you add, with daylight saving time worked out for that date.
- Free
- Runs in your browser
- Daylight saving handled
- No sign-up
How It Works
Compare times in three steps.
Pick a date and time
It starts at the current time in your own time zone.
Choose its time zone
The zone the time is given in, for example America/New_York.
Compare zones
See the same moment in each listed zone, and add or remove zones.
Why time zones need a date
The offset from UTC is not fixed for most places. New York is 5 hours behind UTC in winter and 4 in summer, and countries change their clocks on different dates, so the gap between two cities can change for a few weeks each year. The converter uses the date you pick and the IANA time zone database built into your browser, the same data your phone and computer use to set their clocks.
Zones are named after a city in the region (Europe/Paris, not CET) because a city name records the full history of that place's clock changes.
Every time zone
All IANA zones, from America/Los_Angeles to Asia/Kathmandu (UTC+05:45).
Daylight saving
Offsets come from the chosen date, not from today.
Missing hours flagged
When the clocks jump forward, the skipped hour does not exist; the tool tells you instead of guessing.
Your own list
Add the cities you work with and remove the rest.
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Why Use This Converter
Meeting times without mental arithmetic.
Several zones at once
See the time for everyone in a meeting on one screen.
Date-aware offsets
Correct across the weeks when the US and Europe change clocks on different days.
Starts in your zone
Your device's time zone and the current time are filled in.
Private
Calculated in your browser; no location is sent anywhere.
Frequently Asked Questions
Questions people ask about the Time Zone Converter.
Because they change their clocks on different dates. The US moves its clocks in March and November, the EU on the last Sunday of March and October, and many countries never change. Pick the actual date of your meeting.
For everyday use they show the same time. GMT is also the winter time zone of the UK; in summer the UK uses BST, one hour ahead. UTC never changes, which is why servers and schedules use it.
Pick the nearest large city in the same country and region, for example America/Chicago for Dallas or Asia/Kolkata for anywhere in India.
From the IANA time zone database built into your browser. It is updated with browser and operating system updates when a country changes its rules.
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