Figures are estimates projected from the latest official statistics (ITU, UN, UN Tourism) and are for general reference only.
📲 How to Call United States from Abroad
Follow these 4 simple steps to dial any phone number in United States:
1
Dial your international access code
Most countries use 00 or +. From mobile phones, the + symbol works worldwide.
2
Dial United States's country code: +1
Dial +1 immediately after the international access code. Do not include the + again if you already used 00.
3
Dial the city or area code
For landlines, dial the city code (drop any leading 0). For mobile numbers, skip this step.
4
Dial the local phone number
Enter the remaining digits of the recipient's phone number to complete the call.
💡 Example: To call Baghdad from the US, dial 011 +1 1 [number]. From mobile: + +1 1 [number].
☎️ Complete Guide to Calling United States
How to Call Abroad from United States
To call another country from United States: dial the international exit code (00 in most countries, or press and hold 0 on a mobile to get +), then the destination country code, then the area code (without its leading 0), then the number. Example: to call the US, dial 00 1 [number] or + 1 [number].
International Number Format (E.164)
The global standard format for United States numbers is +1 followed by the national number without its leading 0. A full international number has at most 15 digits including the country code. Save all your contacts this way so they work from anywhere in the world and in every app.
💡 Example: +1 [national number without the leading 0]
Tips to Lower Your Call Costs to United States
Use internet apps like WhatsApp, Viber or Messenger for free calls over Wi-Fi.
Buy a local SIM or eSIM when traveling to United States to pay local rates.
Activate an international plan from your carrier before you travel.
Use Wi-Fi Calling when available to avoid roaming charges.
Compare calling-card and VoIP providers for the lowest per-minute rate.
Why Isn't My Call Connecting? Common Fixes
You dialed 00 and + together — use only one of them.
You kept the leading 0 of the area or mobile code — remove it for international calls.
You forgot the country code +1 — it must come right after the exit code.
You added a city code to a mobile number — mobile numbers don't need one.
Your line isn't enabled for international calls — check with your carrier.
Wrong time — make sure it isn't the middle of the night in United States.
Common Questions About Calling United States
When should I use + instead of 00?
The + symbol works from any mobile phone anywhere in the world and replaces each country's exit code, so you never need to memorize them. 00 is the most common exit code and works on both landlines and mobiles. On a mobile, always prefer + — it is the most reliable.
Why do I drop the leading 0 of the area or mobile code when calling from abroad?
The leading 0 is a national trunk prefix used only for domestic calls. When calling internationally, the country code +1 takes its place, so you remove that 0 — otherwise the number is wrong and the call fails.
How do I call a mobile versus a landline in United States?
For a mobile: dial +1 then the mobile number without its leading 0. For a landline: dial +1, then the city code (without its leading 0), then the local number. Mobile numbers never need a city code.
How do I send a text message (SMS) to United States from abroad?
Save the number in international format — +1 then the number without its leading 0 — and send your message as usual. Your carrier may apply international SMS charges.
How can I call United States via WhatsApp?
Add the contact in international format — +1 then the number without its leading 0. If they have WhatsApp, they appear automatically. WhatsApp calls run over the internet, are free, and need no exit code.
How much does it cost to call United States?
It depends on your carrier and the line type; international calls over the regular phone network can be expensive. To save money, use internet apps like WhatsApp or Viber, or get a local SIM or eSIM.
What does the code +1 mean and where does it come from?
+1 is the international dialing code assigned to United States by the International Telecommunication Union (ITU). Every country has a unique code that identifies it on the global telephone network.
How do I save a United States number in the correct international format?
Always store it in E.164 format: +1 then the national number without its leading 0 and without spaces. Saved this way, it works from any country and in every app without changes.
☎️ Major City Phone Codes
Dial after the country code +1.
New York · +1 212
Los Angeles · +1 213
Chicago · +1 312
Houston · +1 713
Miami · +1 305
San Francisco · +1 415
Boston · +1 617
Washington DC · +1 202
Las Vegas · +1 702
Seattle · +1 206
⏰ Best Time to Call United States
United States uses UTC-4. People there are usually awake from 09:00 to 21:00 local time, so the table below shows the best time to call United States from major countries — in the caller's local time.
From
Best time to call (local time)
🇬🇧 United Kingdom
14:00–23:00
🇩🇪 Germany
15:00–23:00
🇫🇷 France
15:00–23:00
🇸🇦 Saudi Arabia
16:00–23:00
🇦🇪 UAE
17:00–23:00
🇹🇷 Turkey
16:00–23:00
🇮🇳 India
19:00–23:00
Times are approximate and may shift by about an hour during daylight saving time.
🧭 From Your Country to United States
Live dial format and time difference — updates instantly
Dial from 🇺🇸 United States
011–1–XXX–XXXX
Time right now in United States
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🌐 Personalise for Your Passport
Select your passport country to see visa requirements and embassy info relevant to you:
🛂 Visa Requirements
Common Visa Questions for United States
Do I need a visa to visit United States?
It depends on your nationality. Some travelers can enter United States visa-free for short stays, while others need an e-Visa, a visa on arrival, or a visa obtained in advance from an embassy or consulate. Check the rule for your specific passport using the official IATA Travel Centre tool before you travel.
Does United States offer an electronic visa (e-Visa)?
Many countries now offer an online e-Visa for eligible nationalities, letting you apply and pay over the internet before arrival. Availability, eligible passports, and fees differ from country to country, so confirm whether United States currently offers an e-Visa for your nationality on the official IATA Travel Centre.
Is a visa on arrival available in United States?
A visa on arrival lets eligible travelers obtain their visa at the airport or border instead of applying beforehand. Whether United States grants it, and to which nationalities, can change over time, so verify your eligibility on the official IATA Travel Centre before relying on it.
How long can I stay in United States on a tourist visa?
Tourist stays are commonly limited to 30, 60, or 90 days depending on the country and your nationality, and overstaying can lead to fines or entry bans. Check the exact permitted duration for your passport on the official IATA Travel Centre.
What documents are usually required to apply for a United States visa?
Most applications ask for a passport valid for at least six months, recent passport photos, proof of onward or return travel, proof of accommodation, and sufficient funds for your stay. Some visas also require travel insurance or an invitation letter, so confirm the exact list for United States on the official IATA Travel Centre.
How much does a United States visa cost and how long does it take?
Visa fees and processing times vary widely by nationality and visa type, ranging from same-day e-Visas to several weeks for embassy applications. Always apply well before your trip and check the current fee and processing time for United States on the official IATA Travel Centre.
How long must my passport be valid to enter United States?
Many countries require your passport to be valid for at least six months beyond your date of entry, with one or two blank pages for stamps. Confirm the exact passport-validity rule for United States on the official IATA Travel Centre before booking.
⚠️ For guidance only. Visa rules change frequently — always verify with the official embassy website before booking.
🏢 Embassy Information
Contact your foreign ministry for embassy details.
💳 Tipping Culture
Tipping mandatory 15-20% at restaurants, 15-18% taxis
🚄 Transport
Extensive flight network | Uber/Lyft in all cities | Amtrak trains between cities | Greyhound buses | Car essential outside cities
✈️ Airports
500+ airports | JFK New York | LAX Los Angeles | ORD Chicago | DFW Dallas | ATL Atlanta (world's busiest)
🗺️ Administrative Divisions
United States is divided into 50 states.
📅 Best Time to Visit
USA's vast size means weather varies hugely. April–June and September–October offer mild weather nationwide. National parks busiest June–August (book campsites months ahead). Winter (Dec–Feb) for skiing in Rockies, sunshine in Florida/Arizona. Hurricane season June–November affects Gulf and East Coasts.
🛡️ Safety Advice
USA safety varies dramatically by neighborhood. Major cities have safe tourist areas; research specific districts. Gun ownership is legal — incidents rare but possible. Healthcare extremely expensive without insurance — travel insurance essential. Solo travel generally safe; use rideshare at night.
💉 Vaccinations & Health
Routine vaccines should be current. Hepatitis A and Typhoid recommended for most Latin American countries. Yellow Fever required for entry to Brazil and some Andean/Amazon regions. Zika and Dengue precautions (insect repellent) advised in tropical zones. Altitude sickness medication for Andes travel.
📶 SIM & Internet
Excellent network. Pre-paid plans from T-Mobile, AT&T, Verizon ($30–60 for unlimited). eSIM works on all US carriers. Mint Mobile and Google Fi popular budget options. 5G coverage strong in cities, weaker rural/national parks. Free Wi-Fi at Starbucks, McDonald's, public libraries.
👔 Dress Code & Etiquette
Casual dress acceptable in most of United States. Beach resorts very relaxed; cities slightly more formal. Cover up when visiting churches in Latin America. Layering useful for mountain regions. Practical walking shoes recommended for cobblestone streets and uneven terrain in colonial cities.
🌍 United States: Culture, Food & Places
What are the most famous foods in United States?
Some of the most famous foods in United States include: Burger, BBQ ribs, New York-style pizza, Steaks, Hot dogs, Clam chowder, Mac & cheese, Maple syrup pancakes, Cajun shrimp, New York cheesecake.
What are the best places to visit in United States?
Top places and landmarks to visit in United States include: Statue of Liberty, Grand Canyon National Park, Golden Gate Bridge, Times Square, Walt Disney World, Mount Rushmore, Yosemite National Park, Cape Canaveral, Niagara Falls, Las Vegas Strip.
What are the main customs and traditions in United States?
Notable customs and traditions in United States include: Be direct and straightforward, Handshake is the standard greeting, Eating while walking is normal, Smiling at strangers is normal, Tipping is a cultural obligation.
What is United States famous for?
United States is well known for: American football (NFL), Burgers & BBQ culture, Shopping malls, Hollywood & movies, Flags & patriotism.
Where in the world is United States located?
United States is located in the Americas.
What countries are near United States?
Countries in the same region as United States include: Antigua and Barbuda, Argentina, Bahamas, Barbados, Belize, Bolivia, Brazil, Canada, Chile, Colombia, Costa Rica, Cuba.
🆘 Emergency Numbers
911 — Police / Fire / Ambulance (all emergencies)
❓ Frequently Asked Questions
What is the capital of United States?
The capital of United States is Washington D.C..
What currency is used in United States?
United States uses the USD · $ · US Dollar.
What is the dial code for United States?
The international dial code for United States is +1.
When is the best time to visit United States?
USA's vast size means weather varies hugely. April–June and September–October offer mild weather nationwide. National parks busiest June–August (book campsites months ahead). Winter (Dec–Feb) for skiing in Rockies, sunshine in Florida/Arizona. Hurricane season June–November affects Gulf and East Coasts.
How much does a trip to United States cost per day?
Daily costs in United States range from $80 (budget) to $180 (mid-range) to $400 (luxury) per person, excluding flights.
Is United States safe for tourists?
USA safety varies dramatically by neighborhood. Major cities have safe tourist areas; research specific districts. Gun ownership is legal — incidents rare but possible. Healthcare extremely expensive without insurance — travel insurance essential. Solo travel generally safe; use rideshare at night.
How many states does United States have?
United States has 50 states.
🧳 Practical Travel Info
🔌
Power PlugType A,B · 120 V · 60 Hz
💵
TippingTipping is expected: 18-20% at restaurants, $1-2 per drink, 15-20% for taxis and hairdressers.
💧
Tap WaterSafe to drinkUS tap water is safe to drink almost everywhere; bottled water widely available.
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