Open the Iran time converter page: Go to https://www.xconvert.com/time-converter/iran to load Iran with Tehran time already in view on the comparison grid. This is useful if you are planning a call with a supplier in Tehran, checking support coverage for a remote team in Iran, or comparing business hours before booking travel connections through major regional hubs such as Dubai or Istanbul.
Add comparison cities: Click + Add City and search for cities such as London, Dubai, and New York to compare Iran against major finance, trade, and diaspora business centers. London is relevant for international banking and legal coordination, Dubai for regional commerce and aviation links, and New York for global media, technology, and cross-border client meetings involving Iranian partners or markets.
Select a time range on the grid: Click Select to enter selection mode, then drag across Tehran’s row from 9:00 AM to 11:00 AM Iran Standard Time to highlight a working window in purple. Because Iran is UTC+3:30, that same slot is 5:30 AM to 7:30 AM in London during standard time, 8:30 AM to 10:30 AM in Dubai, and 12:30 AM to 2:30 AM in New York during Eastern Standard Time, which quickly shows that a Tehran morning meeting is practical for the Gulf region but usually too early for North America.
Export and share the result: After selecting the range, use the export options for ICS download, Google Calendar, Gmail, Copy to clipboard, or Share link depending on how you need to distribute the schedule. For example, an ICS file helps a distributed operations team see the Tehran meeting in their own local calendars automatically, while a share link is convenient for confirming an interview slot or trade call across multiple countries.

Time Zones in Iran

Iran uses one official time zone nationwide: Iran Standard Time (IRST), which is UTC+3:30. That makes Iran one of the countries using a half-hour offset rather than a whole-hour offset, similar in concept to India’s UTC+5:30 and Afghanistan’s UTC+4:30, although Iran’s exact offset is different.

The country does not currently use multiple domestic time zones, unlike large states such as the United States, Russia, or Australia. Whether you are checking time in Tehran, Mashhad, Isfahan, Tabriz, Shiraz, or Ahvaz, the official civil time is the same across the entire country despite Iran’s large land area of 1,648,000 km².

A unique aspect of Iran’s timekeeping is that it historically used Iran Daylight Time (IRDT) at UTC+4:30 during parts of the year, but that seasonal shift has been discontinued. Today, the practical rule for scheduling is simpler: Iran stays on IRST (UTC+3:30) all year, so there is no spring-forward or fall-back clock change to account for inside the country.

For international coordination, the half-hour offset matters because Iran does not align neatly with many major business centers. For example, Iran is 30 minutes behind Dubai (UTC+4), 30 minutes ahead of Moscow during standard UTC+3 periods, 3 hours 30 minutes ahead of London when the UK is on GMT, and 8 hours 30 minutes ahead of New York when Eastern Time is on UTC-5.

Iran Country Details

Iran is a country in Asia with its capital in Tehran, the political, economic, and cultural center of the country. Tehran is the main reference city for time conversion tools because it hosts central government institutions, major universities, national media, and a large share of Iran’s corporate activity.

Iran has a population of 81,800,269 and a land area of 1,648,000 km², making it one of the larger and more populous countries in Western Asia. Its size means travel planning often involves long domestic distances between cities such as Tehran, Mashhad, Shiraz, Tabriz, and Bandar Abbas, even though all of them share the same national time zone.

The national currency is the Iranian rial (IRR), which is the official unit used for pricing, accounting, and financial references inside the country. For international business visitors, it is important to distinguish official currency notation from informal local pricing habits, since some transactions are colloquially discussed in tomans, which represent ten rials.

Iran’s listed languages here are fa-IR and ku, reflecting Persian (Farsi) as the dominant national language and Kurdish in Kurdish-speaking regions. For customer support, localization, or travel communication, Persian is the primary language used in government, media, transport systems, and most business documentation.

The international dialing code for Iran is +98. If you are calling Tehran or another Iranian city from abroad, you start with +98 followed by the local number format without the domestic trunk prefix, which is useful for confirming hotel bookings, freight arrangements, or family travel plans.

Daylight Saving Time in Iran

Iran does not currently observe daylight saving time. The country now remains on Iran Standard Time (IRST), UTC+3:30, throughout the entire year, which simplifies scheduling for recurring meetings, logistics planning, and international customer support coverage.

Historically, Iran used Iran Daylight Time (IRDT), UTC+4:30, with clocks typically moving forward in spring and back in autumn. However, a recent policy change ended this practice, and from 2023 onward Iran stopped changing clocks seasonally, so there is no longer a one-hour domestic shift to track each year.

This change is important for anyone using older scheduling habits or legacy software, because some people may still expect a seasonal switch around the Persian New Year period. If you are coordinating with airlines, vendors, or remote teams, the current rule is straightforward: all regions of Iran follow the same non-DST time year-round, including Tehran and other major cities.

The main seasonal complexity now comes from other countries’ DST changes, not Iran’s. For example, Iran stays at UTC+3:30 while London moves between GMT (UTC+0) and BST (UTC+1), and New York moves between EST (UTC-5) and EDT (UTC-4), so the time difference with Iran changes during the year even though Iran’s clocks do not.

Frequently Asked Questions

how many time zones does Iran have?

Iran has one official time zone for the entire country: Iran Standard Time (IRST). Even though Iran is geographically large, cities such as Tehran, Isfahan, Shiraz, Mashhad, and Tabriz all use the same national clock, so there are no internal time-zone differences to manage when scheduling domestic travel or meetings.

does Iran use daylight saving time?

Iran does not currently use daylight saving time. The country previously observed seasonal clock changes under Iran Daylight Time (IRDT), but that policy was ended, and since 2023 Iran has remained on UTC+3:30 year-round.

what is the time difference between Iran and UTC?

Iran is UTC+3:30, meaning local time in Iran is 3 hours and 30 minutes ahead of Coordinated Universal Time. For example, when it is 12:00 UTC, it is 3:30 PM in Tehran, which is why Iran often appears offset by a half hour rather than a full hour on world clock tools.

what currency does Iran use?

Iran uses the Iranian rial (IRR) as its official currency. Travelers, importers, and businesses should note that while official pricing is in rials, everyday conversation may sometimes refer to tomans, so understanding the conversion between the two is important when discussing prices locally.

what is the dialing code for Iran?

The international dialing code for Iran is +98. If you are placing a call from outside the country to Tehran or another Iranian city, you begin with +98 and then dial the local number in international format, which is essential for business calls, hotel confirmations, and family contact.

what time is it in Tehran compared with London or New York?

Tehran follows UTC+3:30, so it is 3 hours 30 minutes ahead of London when the UK is on GMT and 2 hours 30 minutes ahead when the UK is on BST. Compared with New York, Tehran is 8 hours 30 minutes ahead during EST and 7 hours 30 minutes ahead during EDT, so a 9:00 AM meeting in Tehran is 12:30 AM in New York during EST or 1:30 AM during EDT.

is the time the same everywhere in Iran?

Yes, the official time is the same everywhere in Iran. From the capital Tehran to major regional cities such as Mashhad, Shiraz, Tabriz, and Bandar Abbas, the country uses one standard national time, which makes domestic coordination simpler than in countries with multiple time zones.