Free calculators and unit converters for general and everyday use.
Calculators » Miscellaneous » Country Calling Codes » United States
Our online tools will provide quick answers to your calculation and conversion needs. On this page, you can find IDD country calling code of United States for making international phone calls from anywhere in the world.
Country calling code of United States is +1
If your phone doesn't have the + key, you need to dial a access code (known as the international call prefix) in it's place. To know the call prefix for the calling country, select the "from country" field in the form or choose from the countries shown below:
Select the countries you are calling to/ making a call from: