Calling Guam from Singapore: 001 1-671 [local number].
Quick answer
To call Guam from Singapore, dial 001, then 1-671, then the local number without leading zeros. Example: 001 1-671 +1 671 300 1234.
Plan before you dial with the international call cost calculator and the best time to call planner. Looking for a calling card alternative instead of the dialing instructions? Compare calling cards to Guam.
Dialing format
001 1-671 +1 671 300 1234
Exit code • Country code • Local number
Whether you’re calling family, friends, or business contacts, knowing how to call Guam correctly helps your conversation start smoothly. This guide covers the essential dialing steps, including country and area codes that are easy to miss. By the end, you’ll be ready to connect confidently with anyone in Guam - whether you’re calling Hagåtña or anywhere else.
Follow these simple steps to make a call to Guam from Singapore
Start by dialing 001 (or use + on mobile). This is the international dialing prefix for Singapore.
Dial the country code +1-671 for Guam.
Dial the local phone number in Guam (typically 8-10 digits, without any leading zeros).
Full format: 001 1-671 [local number] - For example: 001 1-671 612 345 678
International Dialing Format
CallTuv Format
No apps needed • Works in browser
See rates for Guam →Check rates
Pick a destination country to see the live per-minute rates for landline and mobile numbers.
Only pay for the minutes you actually talk - no hidden fees, subscriptions or contracts.
Know exactly what each call will cost before you dial. No hidden fees, no surprises.
Your calling credit stays in your account until you use it. No rush, no pressure.
Add more credit whenever you need it. Start with as little as $5 and top up as you go.
Calling Code
+1-671
Capital of Guam
Hagåtña
Region
Oceania (Micronesia)
Currency of Guam
United States dollar ($)
Guam Time Zones
UTC+10:00
Current time
Your time
--:--
Guam
--:--
Guam is --
Guam, located in Micronesia, is a nation with a rich identity. Its capital city, Hagåtña, serves as the administrative center for a population of approximately 154K.
The official currency is the United States dollar ($). When calling Guam, the country code is +1-671. The country observes the UTC+10:00 time zone(s), and the primary language(s) spoken include Chamorro, English, Spanish.
Population
154K
Population Rank
#185 of 230
Language Footprint
Chamorro, English, Spanish
Time Zone Footprint
UTC+10:00
City/Area Code Coverage
No city-level entries yet
Dial Code Status
Exclusive code in dataset
Guam currently has a 10-digit local number pattern in this guide, with country code +1-671.
Exit Code in Singapore
001 (dial 001 (or + from mobile))
Singapore Country Code
+65
Route Dialing Pattern
001 1-671 +1 671 300 1234
Capital Time Difference
2h destination ahead
Best Calling Window (Origin Time)
07:00-16:00
Currency Pair
Singapore dollar ($) -> United States dollar ($)
Primary languages: Singapore (English, Chinese, Malay, Tamil) and Guam (Chamorro, English, Spanish).
Shared language overlap: English. Primary timezones: Singapore (UTC+08:00) and Guam (UTC+10:00).
Use this route profile to plan a real call from Singapore to Guam, including the exit code, destination country code, time difference, and local context.
From
Singapore
To
Guam
For dialing this route, callers in Singapore usually start with 001 or the plus sign, then dial +1-671 before the local Guam number.
Singapore's primary timezone in this dataset is UTC+08:00, while Guam's is UTC+10:00. A practical origin-time calling window is 07:00-16:00.
Singapore callers are represented by SG/SGP, with Singapore as a capital reference point, South-Eastern Asia, 6.1M people, Singapore dollar ($), and primary language context of English, Chinese, Malay, Tamil.
Origin exit prefix: 001 or + from mobile. Origin country code: +65. Origin time zones: UTC+08:00.
Guam is represented here by GU/GUM, Hagåtña, Micronesia, about 154K people, United States dollar ($), and primary language context of Chamorro, English, Spanish.
Destination calling code: +1-671. Destination time zones: UTC+10:00. Rate check: check live price before dialing.
This route combines Singapore's outbound dialing rules with Guam's destination numbering and local schedule. The primary timezone relationship is 2h destination ahead, and the recommended origin-time window is 07:00-16:00.
Dialing sequence: 001 1-671 local number. Business-hour window: 07:00-16:00. Time relationship: 2h destination ahead.
Destination market: Guam is in Micronesia, with Hagåtña as a main administrative center. Calls from Singapore may reach family, companies, banks, hotels, clinics, or public offices across a market of about 154K. Primary language context: Chamorro, English, Spanish. Local billing and everyday prices use United States dollar ($).
Route context: Singapore is listed in South-Eastern Asia with a population of about 6.1M; Guam is listed in Micronesia with about 154K. The route has shared language overlap in English. Currency context also changes across the route: Singapore dollar ($) in Singapore and United States dollar ($) in Guam.
Top up, dial, and stay connected wherever you are with crystal-clear calls. Transparent pricing, no hidden fees, no subscriptions.
If you have any questions, our team is here to assist you.
Send us an e-mail to [email protected] and we'll respond ASAP.
Send us your inquiry using our dedicated contact form.
Ready to dial in?
Create your account, add credits, and place your first call straight from your browser. No setup fees, no subscriptions.
