How to call United States using the international calling code +1 and area code.
Enter a phone number and start instantly
Example numbers for United States:
Your local time
—:—
Time in United States
—:—
Code
+1
ISO
US
Region
Americas
Time zone
America/New York
Every United States number in international format follows this shape — colour-coded so you can see where the country code ends and the local number begins.
When dialing United States from abroad, the only fixed part is +1 — that's the country code. The rest depends on whether you're calling a mobile or landline number inside United States.
+X XXX XXX XXXX
Dial the country code +1, then the full mobile number.
Example: +1 201 555 0123
+1
Enter the country code +1 when dialing United States from abroad.
Add the local phone number (in most countries, drop the leading zero).
Use TwinPhone to connect the call at low per-minute rates.
United States's international country code is +1. It was assigned by the International Telecommunication Union under recommendation E.164 and is the dialing prefix at the start of every United States phone number written in international format.
You'll often see +1 referred to in search as the "1 area code". Strictly speaking, +1 is a country code — area codes are sub-national, used inside United States. The practical meaning is the same: any number starting with +1 or 001 is a United States number.
TwinPhone routes calls to every +1 number directly from your browser — no app, no SIM card, no calling card. Type +1 followed by the local number, press call, and you're connected.
Dialing codes immediately above and below +1 in the ITU plan — handy if you mistyped a digit or are dialing across a region.
Landline
$0.02
per minute
Mobile
$0.02
per minute
Include the area code if applicable. Omit any leading 0.
Everything you need to know about TwinPhone.
The country code (international dialing code) for United States is +1. To call United States from abroad, dial +1 followed by the national number (in most countries, without its leading zero).
+1 is United States's international country calling code under the ITU E.164 plan — often searched as the "1 area code". Any phone number starting with +1 is a United States number.
From TwinPhone, just type +1 and the number — we connect it. From a landline, dial your exit code, then +1, then the number (in most countries, without the leading 0).
United States's current local time is shown live on this page. Check it before calling so you reach people during waking hours.
No. TwinPhone works directly in your browser — Chrome, Edge, Safari, or Brave. Open the site, add credit, dial +1 and your number, done. No installs, no plugins, no SIM card required.
Yes! Virtual numbers in United States start at $1.60/month. Use it as your caller ID so people see a local number, or receive incoming calls directly in your browser.
Every call uses industry-standard transport encryption (TLS + SRTP). We don't sell your data or share your call history. We do not record calls.
TwinPhone uses adaptive audio technology that adjusts to your connection quality. Even on slow or unstable Wi-Fi — airport, hotel, coffee shop — your call stays connected and audible.
Calls to United States landlines start at just $0.02/min and mobile at $0.02/min. No connection fees, no hidden charges. Billed per minute in 60-second increments (rounded up to the next minute).
Dial United States from your browser — pay only for what you call.
Free to sign up — no card, no subscription14-day money-back guarantee
