Step-by-step
How to dial Guam from different countries
To call Guam, you'll need the country code +1 plus the local phone number. The exact dialing format depends on where you're calling from.
🇺🇸 From the United States or Canada
Dial 011 + 1 + local number
011 is the international access code from the US and Canada
Example: 011 1 XXXX XXXX
🇬🇧 From the United Kingdom
Dial 00 + 1 + local number
00 is the international access code from the UK and most of Europe
Example: 00 1 XXXX XXXX
📱 From any mobile phone
Dial + 1 + local number
The + sign replaces the international access code. Hold 0 on most phones to type +
Example: +1 XXXX XXXX
🌐 With GlobalDial (easiest)
Dial +1 + local number from your browser
No international access codes needed — just enter the full number and click call
Works from any device with a browser — no app required
Dialing tips
Tips for calling Guam
🔢 Drop the leading zero
If the local number starts with a 0, remove it when dialing internationally. For example, if the local number is 0XX XXXX, dial +1 XX XXXX.
🕐 Check the time zone
Before calling Guam, check the local time to make sure you're calling at an appropriate hour. International calls can cross many time zones.
💰 Know the rates
Calls to Guam with GlobalDial start from $0.16/min. Check Guam calling rates →
Country-specific guides
How to call Guam from specific countries
The dialing format for Guam depends on where you're calling from. Check out our detailed guides for calling from specific countries:
Quick reference
Guam calling details
| Country | 🇬🇺 Guam |
| Country Code | +1 |
| ISO Code | GU |
| Continent | Oceania |
| Dial from US | 011 + 1 + local number |
| Dial from UK | 00 + 1 + local number |
| Dial from mobile | + 1 + local number |
| Calling Rate | From $0.16/min |
Call Guam
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How to call countries in Oceania
Call other countries in Oceania
Learn how to call the other 17 countries in Oceania:
Common questions
FAQ
How do I call Guam from the US?
To call Guam from the US, dial 011 + 1 + the local phone number. From a mobile phone, dial + 1 + the local number instead. Or, use GlobalDial to call Guam directly from your browser — no dialing codes needed.
How do I call Guam from the UK?
To call Guam from the UK, dial 00 + 1 + the local phone number. From a mobile phone, dial + 1 + the local number. With GlobalDial, you can skip the access codes and call Guam from your browser.
What is the country code for Guam?
The country code for Guam is +1. You need to dial this code after your international access code (e.g. 011 from the US, 00 from the UK) when calling Guam from abroad.
How much does it cost to call Guam?
With GlobalDial, calls to Guam start from $0.16/min. There are no subscriptions or monthly fees — just buy credits and call. Your credits never expire.
Can I call Guam from my computer?
Yes! GlobalDial lets you call Guam directly from your web browser. No app download, SIM card, or phone required. Just create a free account, buy credits starting from $5, and start calling Guam in under a minute.
Do I need a special app to call Guam?
No. GlobalDial works entirely in your web browser — no app download or plugin required. You can call Guam from any device with a browser and internet connection, including your laptop, tablet, or phone.
