My UTC offset is correct but the timezone name is wrong — how?

Multiple IANA timezone regions may share the same UTC offset. The browser reports the timezone configured in your OS, which may not match your physical location.

Does DST affect what this tool shows?

Yes — the UTC offset shown is the current one, so it will differ between summer and winter in regions that observe DST.

Can I use this to convert times to other timezones?

This tool shows your own timezone. For conversion between timezones, use a dedicated time zone converter tool.

What Is My Timezone

Detect your timezone, UTC offset and current local time.

By AbraCalc Editorial Team · Reviewed by AbraCalc Methodology Review · Last reviewed: 2026-06-26 2 sources

Embed this tool on your site

<iframe src="https://abracalc.com/device/what-is-my-timezone/embed.html" width="360" height="340" style="border:1px solid #e6e1f0;border-radius:12px" loading="lazy"></iframe>

Cite this tool

APA

AbraCalc. (2026). What Is My Timezone [Online calculator]. Retrieved from https://abracalc.com/device/what-is-my-timezone/

BibTeX

@misc{abracalc-what-is-my-timezone, author = {AbraCalc}, title = {What Is My Timezone}, year = {2026}, howpublished = {\url{https://abracalc.com/device/what-is-my-timezone/}} }

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How to use this tool

Open this page — it runs instantly in your browser, no signup or install.
Allow any permission prompt if asked; everything stays on your device.
Use the on-screen controls — results update live.

Detect your timezone, UTC offset and current local time.

How it works

This widget detects your local timezone using the JavaScript Intl.DateTimeFormat().resolvedOptions().timeZone API, which returns the IANA timezone identifier for your current locale (for example, America/New_York or Europe/Berlin). It also displays your current UTC offset and the current local date and time.

The UTC offset shown is the offset active right now, which accounts for Daylight Saving Time (DST) adjustments. If your region observes DST, the offset will differ between summer and winter — this tool always reflects the current offset, not a fixed annual value.

Use this when scheduling international calls, verifying that your system clock is set to the correct timezone, or debugging date/time bugs in a web application that behaves differently in different locales.

Worked example

Find your IANA timezone for a configuration file

Open the tool.
Copy the IANA timezone string (e.g., 'America/Chicago').
Paste it into your application's timezone configuration field.
Confirm the UTC offset matches your expected local time.

Your configuration file now correctly references 'America/Chicago' with the current offset of UTC-5 (or UTC-6 in winter), ensuring accurate local time handling.

Common mistakes to avoid

Assuming the UTC offset is fixed year-round — many timezones shift by 1 hour during Daylight Saving Time.
Using the abbreviation (e.g., EST) instead of the IANA name in software — abbreviations are ambiguous and not unique globally.
Reading timezone info from this tool on a phone and applying it to a laptop that has a different timezone configured.

Key terms

IANA Timezone: A standardized timezone name from the IANA Time Zone Database, such as 'America/New_York'. These names account for historical and DST rule changes.
UTC Offset: The difference between your local time and Coordinated Universal Time. For example, UTC+2 means your clock is 2 hours ahead of UTC.
Daylight Saving Time (DST): The practice of advancing clocks by one hour during summer months to extend evening daylight. It changes the UTC offset seasonally.

Frequently asked questions

My UTC offset is correct but the timezone name is wrong — how?: Multiple IANA timezone regions may share the same UTC offset. The browser reports the timezone configured in your OS, which may not match your physical location.
Does DST affect what this tool shows?: Yes — the UTC offset shown is the current one, so it will differ between summer and winter in regions that observe DST.
Can I use this to convert times to other timezones?: This tool shows your own timezone. For conversion between timezones, use a dedicated time zone converter tool.