Timezone Converter — World Clock for 17 Time Zones (Free)

How to Use

Set the date and time you want to convert, or press Now for the current moment.
Choose the source time zone and read the converted time.
Scan the world clock below to compare all 17 zones side by side.

Everything runs locally in your browser. No time data is sent anywhere, and the clock keeps ticking in real time as long as the page is open.

Coordinating across time zones is a daily problem for remote teams, freelancers and anyone with clients overseas. A meeting that is 9 a.m. in New York can land at 10 p.m. in Tokyo, and a release window that works in Berlin may fall in the middle of the night in Sydney. Seeing all 17 zones at once makes it easy to find hours that work for everyone and to understand, at a glance, what time it is right now for each person in the conversation.

Tips

Schedule calls during overlapping business hours, for example late morning on the U.S. East Coast, which is early evening in Europe and the start of the next working day in Asia. When debugging timestamps in logs or APIs, convert everything to UTC first, then compare against each city clock.

Before announcing a deadline to a distributed team, confirm the time zone you are using. A countdown in local time is unambiguous for the person who set it, but teammates elsewhere need the same instant expressed in their own zone.

Why use it

Adding and subtracting offsets in your head is error-prone, and web searches for “time in London” give you one city at a time. This converter puts all 17 zones on a single screen, updates every second, and keeps your conversions private in the browser — free, with no sign-up.

Real-world use cases

API development: Format JSON responses from Chrome DevTools before committing fixtures.
Debugging: Validate timestamps, regex or hashes without switching to a terminal or IDE.
On-call fixes: From your phone, quickly convert timezone or generate a UUID for a hotfix branch.

How it compares

Tool	Offline	Privacy	Setup	Cost
This tool	Yes	100% local	None	Free
Server tools	No	May log IP	None	Free/Ads
CLI / IDE plugin	Yes	Local	Install & config	Free

For quick checks without context switching, the browser tool is fastest. For CI, keep the CLI as source of truth.

Pro tips

Bookmark the tool. With prefetch enabled, it opens near-instantly next time.
For secrets like hashes with salts, prefer your local terminal for production values.
Pair UUID/Password generators with your password manager for rotation workflows.

FAQ

How do I convert time between time zones?

Pick a date and time, choose a source time zone, and the converter shows the equivalent time in the target zone instantly. Press Now to jump back to the current moment.

Which time zones are included?

The world clock covers 17 zones, from UTC to the major cities of Asia, Europe, the Americas and Oceania, including Shanghai, Tokyo, London, New York, Los Angeles and Sydney.

Does the clock update automatically?

Yes. When you clear the custom time, the world clock refreshes every second and always shows the current time in all 17 zones.

Does the converter handle daylight saving time?

Yes. Times are computed with the standard time zone database, so offsets follow each zone, including daylight saving adjustments where they apply.

Is it safe to paste production secrets?

Local processing is safer than server tools, but avoid pasting real production secrets anywhere.

Does this work offline?

Yes. After the first load the tool works without network.