About WorldTimeConverter.net

WorldTimeConverter.net was created to make time zone conversion fast and straightforward. You enter a time and get an answer immediately, with no account required.

The site is actively maintained and keeps growing based on what users search for and ask about: new converter pairs, new calculators, and prompt corrections whenever an issue is reported.

The tools use the IANA Time Zone Database, the same one your phone and operating system use. Daylight Saving Time transitions are applied automatically based on the actual calendar date, including the US–EU mismatch weeks in spring and autumn.

Everything is free. No signup, no account, no subscription. Every tool on this site works immediately, on any device, in any browser.

Timezone and DST data comes from the IANA Time Zone Database, applied through standard browser/JavaScript timezone APIs rather than hand-maintained offset tables. That means conversions follow DST rule changes without a manual update here. It also means a conversion is only as current as your browser's copy of the database, so keep your browser up to date, especially after a country announces a clock change.

Public holiday data comes from a third-party API (Nager.Date), which covers many countries but not all of them. The holiday dropdown lists 77, and countries the data set does not have, such as India, Israel and Thailand, are left out. Moon phase, illumination, and rise/set times are calculated directly from standard astronomical algorithms (not a live feed), so they can differ by a few minutes from specialized observatory almanacs. Where a data source has a known limitation, the relevant page states it clearly.

Before pages are published or changed, the facts on them are checked against a primary source: the time zone database for clock rules, the text of a law or regulation where one is cited, and the data provider's own limits. Automated tests also check every date on the daylight saving pages against the time zone database, so a wrong date fails the test run. Many pages carry a "last updated" date, and pages that depend on a recent decision say as of which date they were checked.

Found an error, such as a wrong conversion, an outdated holiday, or a broken page? Please let us know through the contact form and we will look into it.

Remote and distributed teams. Finding the one overlap window where New York and Bangalore are both in working hours, setting recurring meetings that survive DST transitions, figuring out why the UTC timestamp in a log file doesn't match what you expected.

Travelers and digital nomads, who want to know what time it is at home while abroad, convert flight departure times to local time, and tell clients what hours they're available without making them do the math themselves.

Developers and technical users: converting epoch timestamps, understanding the difference between UTC and GMT, looking up IANA timezone identifiers, and checking whether a country is currently on standard or daylight time.