How To Call To Thailand From USA: Updated For 2025
Quick Answer
To call Thailand from the United States:
- Landline:
011 + 66 + Area Code (1-2 digits) + Local Number (6-7 digits) - Mobile:
011 + 66 + Mobile Number (8 digits, e.g., 8X XXX XXXX)
Examples:
- For a Bangkok landline (Area Code 2):
011 + 66 + 2 + XXX XXXX - For a Thai mobile phone (e.g., starting with 81):
011 + 66 + 81 XXX XXXX
Thailand is on Indochina Time (ICT), UTC+7, and does not observe daylight saving. This is typically 11-12 hours ahead of US Eastern Time (ET), depending on US DST.
How to Dial Thailand from the US
How to Call a Landline in Thailand
To call a Thai landline from the United States, follow these steps:
- Step 1 – Dial the US exit code: Start by dialing
011. - Step 2 – Dial Thailand's country code: Next, key in
66. - Step 3 – Dial the Thai Area Code: Thai area codes are 1 digit for Bangkok and surrounding provinces (e.g.,
2for Bangkok) or 2 digits for other provinces (e.g.,53for Chiang Mai). When calling from abroad, drop the leading0if it's part of the domestic area code. - Step 4 – Dial the local phone number: This is typically a 6 or 7-digit number. The total number of digits (area code + local number) after the country code will be 8.
For example, to call a Bangkok landline number that is locally 02 XXX XXXX, you would dial: 011 66 2 XXX XXXX
How to Call a Mobile Phone in Thailand
Calling a Thai mobile phone from the US involves these steps:
- Step 1 – Dial the US exit code: Start by dialing
011. - Step 2 – Dial Thailand's country code: Next, key in
66. - Step 3 – Dial the Thai mobile number (without the leading 0): Thai mobile numbers start with a prefix like
6,8, or9after the country code (the domestic leading0is dropped). The total mobile number after+66is 8 digits.
For example, if the Thai mobile number is 081 XXX XXXX, you would dial: 011 66 81 XXX XXXX from the US.
Understanding Thai Phone Numbers
Thai phone numbers use the country code +66. When dialing internationally, the leading 0 from a domestic area code or mobile prefix is dropped.
Landline Numbers
- Format from US:
011 + 66 + Area Code (1-2 digits) + Subscriber Number (6-7 digits) - The total number of digits for a landline after
+66is 8. For Bangkok (area code2), it's+66 2 XXX XXXX. For other provinces with 2-digit area codes (e.g., Chiang Mai area code53), it's+66 53 XXX XXX.
Mobile Numbers
- Format from US:
011 + 66 + Mobile Prefix (1 digit: 6, 8, or 9) + Subscriber Number (7 digits) - Thai mobile numbers are 8 digits long after the country code
+66. They start with prefixes like6X,8X, or9X(where the X is part of the 8-digit national number). For example,+66 8X XXX XXXX.
Thai Area Codes (Fixed Lines)
When calling a landline in Thailand from the US, dial 011 + 66, then the area code (dropping any leading '0' used for domestic calls), followed by the local subscriber number. The total number of digits after +66 is 8.
| Area Code (Dial after 66) | Provinces/Areas Covered | Example Local Format |
|---|---|---|
2 | Bangkok, Nonthaburi, Pathum Thani, Samut Prakan, Phutthamonthon (Nakhon Pathom) | XXX XXXX (7 digits) |
32 | Phetchaburi, Prachuap Khiri Khan, Ratchaburi | XXX XXX (6 digits) |
34 | Kanchanaburi, Nakhon Pathom (except Phutthamonthon), Samut Sakhon, Samut Songkhram | XXX XXX (6 digits) |
35 | Ang Thong, Phra Nakhon Si Ayutthaya, Suphan Buri | XXX XXX (6 digits) |
36 | Lop Buri, Saraburi, Sing Buri | XXX XXX (6 digits) |
37 | Nakhon Nayok, Prachin Buri, Sa Kaeo | XXX XXX (6 digits) |
38 | Chachoengsao, Chon Buri (incl. Pattaya), Rayong | XXX XXX (6 digits) |
39 | Chanthaburi, Trat | XXX XXX (6 digits) |
42 | Bueng Kan, Loei, Mukdahan, Nakhon Phanom, Nong Bua Lamphu, Nong Khai, Sakon Nakhon, Udon Thani | XXX XXX (6 digits) |
43 | Kalasin, Khon Kaen, Maha Sarakham, Roi Et, Nam Nao (Phetchabun) | XXX XXX (6 digits) |
44 | Buri Ram, Chaiyaphum, Nakhon Ratchasima (Korat), Surin | XXX XXX (6 digits) |
45 | Amnat Charoen, Si Sa Ket, Ubon Ratchathani, Yasothon | XXX XXX (6 digits) |
52 | Chiang Mai (some areas), Chiang Rai (some areas), Lamphun (some areas), Mae Hong Son (some areas) | XXX XXX (6 digits) |
53 | Chiang Mai (main), Chiang Rai (main), Lamphun (main), Mae Hong Son (main) | XXX XXX (6 digits) |
54 | Lampang, Nan, Phayao, Phrae | XXX XXX (6 digits) |
55 | Kamphaeng Phet, Phitsanulok, Sukhothai, Tak, Uttaradit, parts of Phichit | XXX XXX (6 digits) |
56 | Chai Nat, Nakhon Sawan, Phetchabun (most), parts of Phichit, Uthai Thani | XXX XXX (6 digits) |
73 | Narathiwat, Pattani, Yala | XXX XXX (6 digits) |
74 | Phatthalung, Satun, Songkhla (incl. Hat Yai) | XXX XXX (6 digits) |
75 | Krabi, Nakhon Si Thammarat, Trang | XXX XXX (6 digits) |
76 | Phang Nga, Phuket | XXX XXX (6 digits) |
77 | Chumphon, Ranong, Surat Thani (incl. Koh Samui) | XXX XXX (6 digits) |
Note: This list is comprehensive. The local subscriber number completes the 8-digit national number after +66.
Thai Mobile Phone Prefixes
Thai mobile phone numbers are 8 digits long after the +66 country code. They begin with specific prefixes (the first digit of the 8-digit number after +66, which was the second digit of the 9-digit domestic number starting with 0).
| Mobile Prefix (First digit after +66) | Example Full Mobile Number (after +66) |
|---|---|
6 | 6X XXX XXXX (e.g., 61 XXX XXXX) |
8 | 8X XXX XXXX (e.g., 81 XXX XXXX) |
9 | 9X XXX XXXX (e.g., 92 XXX XXXX) |
The 'X' represents further digits of the 8-digit mobile number. Specific ranges (e.g., 81, 92) are assigned to different operators, but number portability is in effect.
Time Difference
Thailand operates on Indochina Time (ICT), which is UTC+7. Thailand does not observe Daylight Saving Time and remains on UTC+7 year-round.
The time difference compared to the US East Coast (ET):
- When the US is on Eastern Daylight Time (EDT, UTC-4, typically March to November): Thailand is 11 hours ahead of ET. (e.g., 12 PM EDT is 11 PM in Thailand).
- When the US is on Eastern Standard Time (EST, UTC-5, typically November to March): Thailand is 12 hours ahead of ET. (e.g., 12 PM EST is 12 AM the next day in Thailand).
Thailand's Phone System
Thailand has a well-developed telecommunications sector, regulated by the National Broadcasting and Telecommunications Commission (NBTC). The country boasts a high mobile penetration rate, with major operators including AIS (Advanced Info Service), True Corporation (which merged with DTAC), and National Telecom (NT, a state-owned enterprise formed from the merger of TOT and CAT Telecom). These operators provide extensive 2G, 3G, 4G/LTE coverage, and have been actively deploying 5G networks across the nation. The fixed-line infrastructure is also robust, particularly in urban areas. Thailand is a regional leader in digital innovation and connectivity.
Best Times to Call
Considering Thailand is 11-12 hours ahead of US Eastern Time (ET):
- Calls from the US ET zone are best made in the evening to align with Thailand's morning or early afternoon. For example, 8 PM - 10 PM ET would correspond to 7 AM - 9 AM or 8 AM - 10 AM the next day in Thailand.
- Alternatively, very early morning calls from the US (e.g., 7 AM ET) would reach Thailand in their late evening (6 PM or 7 PM ICT).
- Thai business hours are typically Monday to Friday, from around 8:30/9:00 AM to 5:00/6:00 PM ICT.
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