How to Call India From the US: Dialing Code, Cost and Time Zone

Introduction

Calling India from the US comes down to one sequence: 011, then 91, then the Indian number with its leading 0 dropped. The part people get wrong is usually that leading 0, since it belongs to India's own domestic dialing and doesn't carry over once you're calling in from abroad.

This guide covers the exact dialing sequence, how Indian mobile and landline numbers are built, the time difference and when to call, what a call actually costs, whether an Indian toll-free number can be reached from the US at all, and a 2024 government warning worth knowing before you place the call.

How to Dial India From the US

Start with 011, the exit code for leaving the North American Numbering Plan. Add 91, India's country code. Finish with the Indian number, dropping the leading 0 if the number domestically starts with one. A Kolkata landline dialed inside India as 033-XXXXXXXX becomes 011 91 33 XXXXXXXX from a US phone, and a mobile number keeps all 10 of its digits after the 91.

From a mobile phone, you can dial + in place of 011: +91 33 XXXXXXXX works the same way. The 0 you see on an Indian landline number is a domestic trunk prefix used for long-distance calls inside India, not part of the number itself, so it never appears in the international format.

Indian Mobile and Landline Number Formats

An Indian mobile number is always 10 digits and starts with 6, 7, 8 or 9. A landline number pairs an STD (city) code with a local number, and the two together always add up to 10 digits, so a shorter STD code means a longer local number and vice versa.

That domestic 0 in front of an STD code, like Kolkata's 033, is the same long-distance trunk prefix mentioned above. It's correct for dialing inside India and dropped once +91 is in front of the number. For more on how these numbers are built and formatted, see our India phone number format guide.

Time Zone: When to Call India

All of India uses India Standard Time (IST), UTC+5:30, and the country does not observe daylight saving time. Because the offset includes a half hour, the gap with the US doesn't line up on the hour the way it does with some other countries.

• US Eastern Time: India is 9.5 hours ahead during US daylight saving time and 10.5 hours ahead during US standard time.
• US Pacific Time: India is 12.5 hours ahead during US daylight saving time and 13.5 hours ahead during US standard time.

In practice, a morning call from India lands the previous evening in the US. A 9 a.m. call from Delhi in summer reaches New York around 11:30 p.m. the night before. Our best time to call India page lays out overlapping business-hour windows.

What a Call to India Costs

Two major US carriers sell flat-rate add-ons that include India. AT&T's $15/month International Calling add-on gives unlimited calling from the US to more than 85 countries, including India. T-Mobile's $15/month Stateside International Talk add-on covers unlimited calling to about 70 countries and destinations, also including India. Both are worth comparing against your carrier's standard per-minute rate if you call India regularly.

Without an add-on, calls are billed per minute at your carrier's standard international rate, which varies and is worth checking directly on your carrier's site since rates change. The FCC's own consumer guidance points to calling apps and VoIP services as a way to cut or avoid per-minute charges, particularly over Wi-Fi.

Calling an Indian Toll-Free (1800) Number

Indian 1800 numbers are toll-free for callers inside India, but they're generally built for domestic reachability only. Unless the business behind the number has separately set up international access, dialing an Indian 1800 number from a US phone typically won't connect the way a US toll-free number would from within the US. If you need to reach an Indian business from abroad, look for a direct landline or mobile number instead.

A 2024 Warning About Spoofed International Calls

In May 2024, India's Department of Telecommunications warned that fraudsters were spoofing +91 numbers on international calls so they would look like ordinary domestic Indian calls, using them to impersonate officials in scams. A genuine international call is not supposed to display a bare Indian number the way a spoofed one did.

The government responded by launching the International Incoming Spoofed Calls Prevention System in October 2024, built to identify and block spoofed international calls before they reach Indian subscribers. By December 2024, the government reported a more than 90% reduction in spoofed international calls within two months of the system going live. It's a good reminder for anyone calling into India, or receiving calls back, to be wary of a call that claims to be an Indian official number but behaves like it's coming from outside the country.

Conclusion

Calling India from the US is a fixed sequence once you know it: 011, then 91, then the number with its leading 0 dropped. From there, the details that matter are the time difference, since IST's half-hour offset makes the overlap with US business hours easy to misjudge, and the cost, where a flat-rate add-on can beat per-minute billing if you call often.

A team that calls India regularly benefits from keeping that number in one place. With Ringflow's cloud phone system, calls to and from India go through a business number on mobile and desktop apps instead of someone's personal phone plan.

FAQ