Timezone Converter
Convert time between any timezones
Timezone Converter is a free online tool from BrowserUtils that convert time between any timezones. It runs entirely in your browser — your data never leaves your device. No account required.
How to use Timezone Converter
- 1 Paste or type your input into the editor above.
- 2 The tool processes your data instantly — right in your browser, with nothing sent to a server.
- 3 Copy the result with one click or continue editing your input.
About Timezone Converter
Free online timezone converter. Convert any time between world timezones using the browser Intl API with full daylight saving support. This tool runs entirely in your browser — your data is never sent to a server. Just paste your input, get instant results, and copy with one click. No sign-up or installation required.
Timezone Converter specs
- Runtime
- 100% client-side (browser)
- Built on
- Native Date and Intl.DateTimeFormat APIs with full IANA timezone database support
- Cost
- Free — no account, no rate limits, no usage caps
- Browser support
- Chrome 90+, Firefox 88+, Safari 14+, Edge 90+
- Part of
- 299 developer tools on BrowserUtils (100% client-side)
Questions
Does this handle daylight saving time?
Yes, the converter uses the Intl.DateTimeFormat API which automatically accounts for daylight saving time transitions in each timezone.
How many timezones are supported?
All IANA timezones recognized by your browser are supported, covering every major city and region worldwide.
How do I convert a time from EST to PST?
Select America/New_York as the source timezone and America/Los_Angeles as the target. Enter the time you want to convert and the result appears instantly. The offset between EST and PST is typically 3 hours.
Does the timezone converter work offline?
Yes. The conversion uses the browser built-in Intl API, which includes timezone data. No server request is needed.
Why does the time difference between two cities change during the year?
Countries adopt daylight saving time on different dates, or not at all. This means the offset between two cities can shift by an hour or more depending on the time of year.
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