Timezone Converter

Convert any time from one timezone to multiple target timezones — ideal for international meetings, remote work, and travel planning. Handles daylight saving automatically.

Source date & time

Use current time (live)

Source time zone

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Target zones

Time zones use the IANA tz database via your browser's Intl.DateTimeFormat. Daylight saving time is handled automatically.

Features

Convert any time to any zone

Compare multiple zones at once

Automatic DST handling

Search for cities and time zones

Live current-time view

How to Use

1. By default the current time is shown, compared across multiple target timezones.

2. To convert a specific time, uncheck 'Use current time' and enter a date and time.

3. Pick the source timezone for that time.

4. Click 'Add' to include more target timezones.

5. Click × to remove a timezone you no longer need.

About this tool

Scheduling across time zones is error-prone because offsets change with daylight saving time on different dates in different countries. This converter takes a date and time in one zone and shows the matching local time, date and UTC offset in as many target zones as you add. It uses the IANA time zone database built into your browser, the same source used by operating systems and programming languages, so daylight saving rules are applied for the specific date you enter rather than as a fixed offset. Leave it on live mode to see the current time around the world, or enter a future meeting time to check that it is reasonable for everyone. The list covers major cities on every continent plus your own zone.

Frequently Asked Questions

How does the converter handle daylight saving time?

It calculates the offset for the exact date and time you enter using the IANA rules in your browser. A meeting in March may have a different gap between London and New York than one in April, because the two regions change clocks on different dates.

Why should I use city names instead of abbreviations like CST?

Abbreviations are ambiguous: CST can mean Central Standard Time in North America, China Standard Time or Cuba Standard Time. IANA names such as America/Chicago or Asia/Shanghai identify exactly one set of rules.

What is the difference between UTC and GMT?

For everyday scheduling they show the same time. UTC is the precise atomic time standard used by computers, while GMT is a time zone used by the UK in winter, which switches to BST (UTC+1) in summer.

Why does the date change in some target zones?

When it is evening in one zone it can already be the next day further east, or still the previous day further west. The date under each time shows which calendar day applies there.

Can I share the converted times?

Copy the times from the list into your invitation, and include the time zone name for each participant. Calendar apps convert invitations automatically when the event is created with a specific time zone.