4 Simple Steps to Call United States
Follow these easy steps to make your first call
Format the Phone Number
Start with the country code US, then add the phone number. For example: US XXX XXX XXXX
Remove any leading zeros from the local number. The country code replaces the trunk prefix.
Choose Between Mobile or Landline
Mobile and landline numbers may have different prefixes and rates in some countries.
Mobile numbers often start with specific digits. Check if the number is mobile or landline to understand potential rate differences.
Check the Best Time to Call
Consider time zone differences and local business hours to ensure your call is answered.
Avoid calling very early in the morning or late at night in the recipient's local time. Business hours are typically 9 AM - 5 PM local time.
Start Your Call Through UseCaller
Use our browser-based calling service to connect. No app download required.
Simply enter the formatted number in your dashboard, add credits if needed, and click call. Crystal clear quality guaranteed.
Essential Facts About Calling United States
Capital
Washington D.C.
Time Zone
New York
Languages
English, Spanish
Currency
US Dollar ($)
Country Code
+1
Emergency
911
Business Hours
9:00 AM - 5:00 PM
Mobile Prefix
12..., 13...
About Calling United States
Calling United States from abroad is straightforward with UseCaller. United States uses the +1 country code for all international calls. The capital city Washington D.C. and other major cities are well-connected with modern telecommunications infrastructure, ensuring crystal-clear call quality. Common languages include English and Spanish, so you may want to prepare a few key phrases if calling for business. The country operates primarily in the New York time zone, which is important to consider when planning your calls. United States uses the US Dollar as its official currency. Business hours typically follow local customs, so checking the time difference before calling is recommended. With UseCaller, connecting to anyone in United States takes just seconds—no app downloads, no subscriptions, just simple browser-based calling at competitive rates.
Expert Tips for Calling United States
- 1The US spans 6 time zones—always verify which zone you're calling
- 2Cell phones and landlines share the same area code system
- 3Most business calls are best made between 9 AM and 5 PM local time
- 4Toll-free numbers (800, 888, 877) cannot be dialed internationally
- 5Area codes are essential—the US has over 300 different codes
💡 Did You Know?
The US telephone network is the largest in the world, with over 400 million active phone numbers.
📱 Telecom Network
Major carriers include AT&T, Verizon, and T-Mobile. The country has excellent 5G coverage in urban areas.
Major City Area Codes in United States
212
New York City
213
Los Angeles
312
Chicago
713
Houston
305
Miami
Number Formatting Examples
See how to correctly format phone numbers for United States
International Format
Standard format used worldwide
From USA
USA exit code + country code + number
Mobile Number
Mobile numbers may start with specific digits
Landline Number
Landline format with area code
Quick Reference Guide
Essential information at a glance for calling United States
Country Code
US
Best Calling Hours
9 AM - 5 PM local time
Rate per Minute
$0.02/min
Emergency Numbers
Varies by country