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Time Zone Converter
Compare a time across cities worldwide.
100% FreeRuns instantlyNo watermark
- 1Choose toolOpen the Vootkit workspace.
- 2Add inputProvide the content or settings.
- 3ProcessLet the browser do the work.
Private by designProcessed on your device where possible.
Works on any deviceDesktop, tablet and mobile browsers.
No installationOpen the page and start working.
Always free coreUse the free plan for everyday tasks.
How to use Time Zone Converter
Provide the content or settings.
02Let the browser do the work.
03Copy, download or continue.
04Your files stay private
Your work is processed locally in your browser where possible and is never added to a Vootkit upload library.
Learn more about privacyScheduling across timezones goes wrong twice a year, when one country changes clocks and the other has not yet — or never does. A fixed offset you memorised in January is wrong in April.
What Time Zone Converter does
Converts a specific date and time between timezones using the IANA timezone database built into your browser.
Because it uses real timezone rules rather than fixed offsets, daylight saving is handled for the actual date you enter — including the weeks when two regions have switched and the other has not.
Why offsets are not enough
| Source of rules | The IANA timezone database, built into your browser |
|---|---|
| Daylight saving | Applied automatically for the date you enter |
| Why the date matters | The offset between two zones changes across the year |
| Northern switch | Usually March and October/November |
| Southern switch | The opposite months — offsets can move by two hours |
| No daylight saving | Much of Asia and Africa, and Arizona in the US |
| Clock source | Your device |
Detailed steps
- Enter the date and time, not just the time — the date decides the offset.
- Pick the source and target timezones.
- Read the converted time.
Worth knowing
The dangerous window is the few weeks each spring and autumn when one region has changed clocks and the other has not. The usual gap between London and New York is five hours, but for about two weeks a year it is four. Meetings booked on a remembered offset land an hour out, and only in that window.
Frequently Asked Questions
Why does the offset change depending on the date?
Daylight saving. Regions switch on different dates, and some never switch at all, so the gap between any two zones is not constant. That is exactly why entering the date matters as much as the time.
Which timezone should I use for a country with several?
Pick the city rather than the country. The US spans six zones and Australia three, so "US time" is meaningless — IANA names are city-based for this reason.
Is my device’s clock used?
For the current time, yes. The conversion rules come from the timezone database rather than your clock, so an incorrect device time shifts the starting point but not the arithmetic.
How should I write a time for an international invite?
Include the timezone abbreviation and the UTC offset, and let calendar software do the conversion. Sending a bare "3pm" to a global team is how meetings get missed.
Is Time Zone Converter free?
Yes. The Vootkit free plan includes 5 tool runs a day. Upgrade to Vootkit Pro for unlimited daily use, an ad-free workspace and saved workflows.
Are my files uploaded?
No. Time Zone Converter runs entirely in your browser — your file is processed on your own device and never sent to a server. There is nothing for us to store or delete.
Do I need to install anything?
No. Time Zone Converter works in any modern browser on desktop, tablet or phone. Open the page and start.
How often can I use it? Is there a daily limit?
On the free plan you get 5 tool runs a day. When you reach the limit you'll see a prompt to upgrade, and it resets the next day. Vootkit Pro removes the cap entirely for unlimited daily use.
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This tool processes everything locally in your browser. You can disconnect from the internet after the page loads and it will still work.