How to Call a US Phone Number from India (Dialing Steps + Cost Guide)

Before calling the US from India, ensure you use the correct international prefix, add the US country code, and dial the full number with the area code. Also, confirm that international calling is active on your line and that you have sufficient balance or an ISD pack.

The international exit code is the first set of numbers you dial to inform your carrier that you are placing a call outside India. For landlines, the exit code is 00, and it must be entered before the country code.

Likewise, if you are using a mobile phone or modern VoIP phones, you can dial the + (plus) sign, which serves as the universal international prefix. To type the plus sign on most mobile devices, press and hold the 0 key until the + appears.

The United States is part of the North American Numbering Plan (NANP), and its country code is 1. So, after the exit code, you need to add the country code to identify the destination country and ensure your call is routed correctly.

US follows a strict 10-digit US phone number format, consisting of a 3-digit area code and a 7-digit local number, for both landline and mobile phone numbers. The complete international dialing structure is:

[Exit Code] + [Country Code] + [Area Code] + [Local Number]

Most major Indian telecom operators, including Reliance Jio, Bharti Airtel, and Vodafone Idea, typically have ISD enabled by default on many 4G and 5G plans. However, you should still verify that international calling is active in your account settings. You can check this through their app to confirm that “International Calling” is not disabled.

If you are using a landline connection from Bharat Sanchar Nigam Limited (BSNL) or Mahanagar Telephone Nigam Limited (MTNL), ISD may require manual activation, especially for new connections. In such cases, you may need to dial a specific activation code or visit a local branch for assistance.

In most cases, international calls are not included in standard “unlimited” plans. Plus, Standard Pay-As-You-Go rates are significantly higher, up to ₹6.5 ($0.070) per minute, although that can be minimized with a dedicated international calling plan.

Therefore, you should ensure that you have sufficient main balance or an active ISD pack before placing the call. Without adequate balance, your call disconnects immediately after dialing.

To call a US phone number from India, dial the international prefix (+ on mobile or 00 on landline), then enter the country code 1, followed by the 10-digit US number (area code + local number).

Here are the detailed steps for both landline and mobile phone users.

To call a US phone number from India using a mobile phone, open your dial pad and enter the plus sign as the international prefix. Then, add the US country code, followed by the full US number including the area code and local number, and press the call button to connect.

1. Open your dial pad.
2. Enter the “+” sign: Press and hold the 0 key until the + symbol appears.
3. Dial the country code 1.
4. Enter the 10-digit US number, which includes the 3-digit area code followed by the 7-digit local number.
5. Press Call.

Your final number should look like this: +1 212 555 0123

To call a US phone number from India using a landline, pick up the receiver and wait for the dial tone. Then, enter the international exit code, add the US country code, and dial the complete US number to place your call.

1. Pick up the receiver and wait for the dial tone.
2. Dial the exit code 00.
3. Dial the country code 1.
4. Enter the 10-digit number that includes the correct area code and local number.

The full dialing sequence should look like this: 00 1 212 555 0123

You can call the US from India through regular carrier dialing, international calling cards, VoIP platforms, or internet-based apps.

Direct dialing is the most convenient method because it does not require any third-party applications. However, the standard call rates are higher, up to ₹8 ($0.087) per minute for major Indian carriers such as Reliance Jio, Bharti Airtel, and Vodafone Idea.

However, they have introduced many affordable international calling plans for more affordable rates. So, this method is best for users who want quick, stable, and high-quality calls without depending on internet connectivity.

The typical cost ranges between ₹1 ($0.011) and ₹2.5 ($0.028) per minute to call the USA from India using calling cards, depending on the provider. So, international calling cards are also a preferred option for affordable overseas calls.

However, their popularity has declined due to cheaper mobile ISD plans, with services like Reliance Global Call and KeepCalling still offering competitive rates. So, calling cards are suitable for individuals using landlines without ISD activation or those who prefer a fixed prepaid budget for international calls.

VoIP services, like Calilio, route calls through the internet using virtual phone numbers instead of traditional telecom infrastructure. So, the call rates can be as low as 1 to 2 cents (₹0.92 to ₹1.84) per minute. As a result, businesses widely prefer this method for frequent calls and advanced communication features beyond basic voice connectivity.

However, you need to pay monthly or yearly subscription fees, which typically start around $12–$15 per month. Therefore, VoIP services are best suited for freelancers and businesses who require a local US presence, and advanced calling features such as call recording and AI-generated call summaries.

Internet-based messaging applications are the most common solution for personal communication. If both parties have an internet connection and use the same application, calls can be made at no additional cost. Therefore, this option is ideal for personal calls.

Popular apps include WhatsApp, FaceTime, Telegram, and Facebook Messenger. These platforms offer free voice and video calls, using only Wi-Fi or mobile data.

The best time to dial the US from India is 9 AM–6 PM, which corresponds to 7 PM to 9:30 AM depending on the different time zones of the United States. Here is the table for the detailed timing for each time zones of America.

Note: The United States observes Daylight Saving Time (DST) in most states, usually from March to November. During this period, the time difference may shift by one hour, so it’s best to confirm the current local time before calling.

Calling the United States from India becomes straightforward once you understand the correct dialing structure. Simply enter the international exit code (00 or +), followed by the US country code (1), the 3-digit area code, and the 7-digit local number. Using the proper sequence ensures your call connects smoothly without errors or interruptions.

When selecting the most efficient calling method, VoIP services provide the best balance of cost, reliability, and flexibility for frequent callers and businesses. And among the top VoIP service providers, Calilio stands out by offering a free US virtual number with every subscription plan, allowing you to make and receive calls at local US rates while operating from India.