How to Call a US Number from Thailand?

Before dialing a US number from Thailand, you must understand the correct sequence of the US phone number format for international calls. This includes the exit code of Thailand, the US country code, the area code, and the subscriber landline/mobile number.

1. Exit Code of Thailand: The exit code is the number dialed first to make an international call from Thailand. The Thailand exit code is 001. Alternatively, you can also use the “+” sign instead of the exit code.
2. US Country Code: The United States country code is 1. This code routes your call to the US phone network.
3. Area Code: Unlike many other countries, the United States uses the same numbering format for both mobile and landline phone numbers. Both types of numbers include the 3-digit area code that represents a specific geographic region.
4. Subscriber Number: The subscriber number is the 7-digit local phone number assigned to a landline or mobile phone in the US. Once combined with the area code, it completes the full US phone number format.

To dial the US from Thailand, enter the exit code of Thailand (001), followed by the US country code (1), the 3-digit area code, and the 7-digit subscriber number.

• Step 1: Dial Thailand’s exit code, 001 or the”+” sign.
• Step 2: Enter the US country code, 1.
• Step 3: Dial the area code of the US city you want to reach.
• Step 4: Enter the subscriber number.

To reach a US toll-free number from Thailand, dial Thailand’s international exit code (001), followed by the US country code (1), and the toll-free number.

• Step 1: Dial 001, Thailand’s exit code, or use the “+” sign.
• Step 2: Enter the US country code 1.
• Step 3: Dial the US toll-free prefix (800, 844, 855, 866, 877, or 888).
• Step 4: Dial the remaining toll-free subscriber number.

Note: When calling a US toll-free number from Thailand, the call may not always connect. If the call does connect, international calling charges may apply.

The best time to call the United States from Thailand for business purposes is between 9:00 PM and 8:00 AM Thailand time, which aligns with standard US business hours across major time zones. For personal calls, contacting the US during the evening hours after 6:00 PM local time is ideal, which corresponds to early morning hours in Thailand (around 6:00 AM to 10:00 AM).

The United States has 6 primary time zones (Eastern, Central, Mountain, Pacific, Alaska, and Hawaii–Aleutian), while Thailand has 1 time zone (Indochina Time, UTC+7). As a result, Thailand is approximately 12 to 15 hours ahead of the US, depending on the US time zone.

Here’s a clear table showing the best time to call the US from Thailand while aligning with US business hours.

Note: Since the US observes Daylight Saving Time while Thailand does not, the time difference may vary at certain times, so always double-check the current local time before calling.

The cost of calling the USA from Thailand is 2.70 to 4.65 Thai Baht per minute using traditional calling and 0.30 to 1 Thai Baht per minute using VoIP services. Calls made with calling cards cost around 1 to 1.50 Baht per minute, while calls made through social media apps are free.

Calling the USA from Thailand using a traditional mobile or landline carrier is usually the most expensive option. Rates usually range from 2.70 to 4.65 Baht per minute, depending on the provider and calling plan. However, subscribing to an international calling plan can help reduce these costs.

VoIP services offer virtual numbers that allow you to call the USA from Thailand using an internet connection instead of a traditional mobile network. Because calls are routed online, VoIP significantly reduces international calling costs compared to standard carriers. Rates are usually much lower, often starting from 0.3 to 1 Baht per minute, depending on the service and plan selected.

Calling cards are one of the most budget-friendly choices for dialing the USA from Thailand. These prepaid cards are easy to find online or in local shops and allow you to make international calls at lower rates, usually between 1 and 1.50 Baht per minute. You simply dial an access number, enter your PIN, and then call the US number.

You can also call US contacts using social media and messaging apps like WhatsApp, Viber, or Messenger. These platforms use internet data for voice and video calls. Both you and the recipient must have the same app installed and a stable internet connection. This method is free or low-cost but depends on internet quality for clear and stable calls.

Calling a US number from Thailand is simple once you understand the correct dialing format and available calling options. By using Thailand’s international exit code (001 or +), followed by the US country code (1) and the recipient’s phone number, you can easily connect to any US landline or mobile number.

Beyond the dialing format, it is also important to consider call timing and cost, as international calls can become expensive and time zone differences may affect availability.