Quick Answer

How to Call the United States from Cambodia

To call the US from Cambodia, dial your exit code (001, 007, or 008 depending on your carrier), then 1 (the US country code), then the 3-digit area code and 7-digit local number. From a mobile phone, dial +1 followed by the full 10-digit US number. Sayfone offers calls to the United States for just $0.08 per minute — open your browser and start calling.

Call the United States Now
    🇰🇭From Cambodia
    To United States🇺🇸

    $0.08

    Per minute

    +1

    Country code

    HD

    Call quality

    Landline rate

    $0.08/min

    Mobile rate

    $0.08/min

    Same per-minute Sayfone rate for landline and mobile.

    Average call quality

    Whether you're calling family in Lowell, Long Beach, or Seattle — or coordinating a business shipment — here's exactly how to connect from Cambodia to any US number.

    Steps at a glance

    1. Dial your Cambodian carrier exit code: 001, 007, or 008 (or use + on mobile)
    2. Enter the US country code: 1
    3. Dial the 3-digit US area code (e.g. 213 for Los Angeles, 617 for Boston)
    4. Dial the 7-digit local number
    5. Full example: 001 + 1 + 213 + 555 1234

    Sources

    1. 1
      Cambodia international exit codes (carrier-specific)

      Source for Cambodia exit codes 001/007/008

    2. 2
      ITU E.164 – Telephone numbers in Cambodia

      Source for Cambodia numbering plan and exit codes

    3. 3
      US country code +1 and dialing format

      Source for US country code and number structure

    STEP-BY-STEP GUIDE

    How to Dial the United States from Cambodia

    Follow these steps to reach any US landline or mobile number from a Cambodian phone or internet connection.

    • Dial Cambodia's exit code

      From a landline or depending on your mobile carrier, dial 001 (Telecom Cambodia), 007 (Royal Telecom), or 008 (VoIP). On most mobile phones, you can simply press and hold 0 to get the + symbol, which replaces any exit code.

      001 or 007 or 008 or +
    • Enter the US country code

      The United States country code is 1. Dial it immediately after the exit code or + symbol.

      001 + 1 … or +1 …
    • Dial the 3-digit area code

      Every US phone number starts with a 3-digit area code that identifies the region. For example, 213 is Los Angeles, 617 is Boston, and 206 is Seattle. Cambodian-American community hubs include Long Beach, CA (area code 562), Lowell, MA (area code 978), and Seattle, WA (area code 206).

      001 + 1 + 562 …
    • Dial the 7-digit local number

      Complete the call by entering the remaining 7 digits of the US phone number. Both US landlines and mobile phones follow the same 10-digit format (area code + local number).

      001 + 1 + 562 + 555 1234
    • Full dialing example

      To call a number in Long Beach, California from a Telecom Cambodia line, you would dial: 001 1 562 555 1234. From a mobile phone: +1 562 555 1234.

      +1 562 555 1234

    Dialing format reference

    +1

    Use these patterns when entering a full international number to +1.

    Mobile

    +1 (XXX) XXX-XXXX

    Landline

    +1 (XXX) XXX-XXXX

    • +1 562 555 1234 (Long Beach, CA)
    • +1 978 555 6789 (Lowell, MA)
    • +1 206 555 4321 (Seattle, WA)
    • +1 212 555 0198 (New York, NY)

    Major city area codes

    Long Beach, CA562
    Lowell, MA978
    Seattle, WA206
    Los Angeles, CA213
    New York, NY212
    Boston, MA617
    San Francisco, CA415

    Sources

    1. 1
      Cambodia carrier exit codes

      Source for multiple Cambodia exit codes by carrier

    2. 2
      US phone number structure

      Source for US area codes and 10-digit format

    DIALING RULES

    Important Dialing Rules for Calling the US from Cambodia

    Keep these rules in mind to make sure your call connects on the first try.

    Cambodia has multiple exit codes — pick the right one

    Unlike most countries that use a single exit code, Cambodia's international dialing prefix depends on your carrier: 001 for Telecom Cambodia, 007 for Royal Telecom, and 008 for VoIP. If unsure, use the + symbol on your mobile phone, which works with any carrier.

    US landlines and mobiles use the same format

    In the United States, both landline and mobile numbers follow the same 10-digit format: a 3-digit area code plus a 7-digit local number. There is no need to distinguish between the two when dialing from abroad.

    Do not add a leading 0 or 1 before the area code

    When calling from Cambodia, do not prepend a 0 or an extra 1 to the US area code. The US country code is simply 1, followed immediately by the 3-digit area code. Adding extra digits will cause the call to fail.

    Watch out for US toll-free numbers

    US toll-free numbers (starting with 800, 888, 877, 866, 855, 844, or 833) generally cannot be reached from international numbers. If you need to contact a US business that only lists a toll-free number, look for an alternative direct-dial number on their website.

    855 is both Cambodia's country code and a US toll-free prefix

    The number 855 serves double duty: it's Cambodia's international country code and also a US toll-free prefix (1-855). Context determines meaning. When dialing out of Cambodia, your exit code + 1 routes the call to the US, so there's no conflict — just be aware of the coincidence when reading phone numbers.

    TIMING & TIPS

    Best Times to Call the US from Cambodia

    Cambodia (ICT, UTC+7) is 11 to 14 hours ahead of the continental United States depending on time zone. Planning your call around this gap ensures you reach people at a reasonable hour.

    🇺🇸

    The large time difference between Cambodia and the US means daytime overlap is limited. Evening and late-night hours in Cambodia align with morning and daytime in the US.

    Time & windows

    US East Coast (New York, Boston)

    Cambodia is 11 hours ahead (EDT) / 12 hours ahead (EST)

    When it's 8 PM in Phnom Penh, it's 9 AM in New York (EDT)

    US West Coast (Los Angeles, Seattle)

    Cambodia is 14 hours ahead (PDT) / 15 hours ahead (PST)

    When it's 10 PM in Phnom Penh, it's 8 AM in Los Angeles (PDT)

    US Central (Chicago, Houston)

    Cambodia is 12 hours ahead (CDT) / 13 hours ahead (CST)

    When it's 9 PM in Phnom Penh, it's 9 AM in Chicago (CDT)

    🇰🇭Best for personal calls to US East Coast
    7:00 PM – 10:00 PM Cambodia timeCatches 8 AM – 11 AM in New York (EDT)
    🇰🇭Best for personal calls to US West Coast
    9:00 PM – 12:00 AM Cambodia timeCatches 7 AM – 10 AM in Los Angeles (PDT)
    🇰🇭Best for US business hours (East Coast)
    9:00 PM – 5:00 AM Cambodia timeAligns with 9 AM – 5 PM Eastern (EDT)
    🇰🇭Weekend family calls
    8:00 PM – 11:00 PM Cambodia time (Saturday)Saturday morning in the US — most family members are available

    Calling tips

    • Use the + dialing prefix on your mobile to bypass carrier-specific exit codes — it works with any Cambodian operator.
    • Sayfone works in your browser at $0.08/min to the US, so you don't need a special SIM or app installation.
    • If you frequently call the same US numbers, save them in your contacts with the full international format (+1 XXX XXX XXXX) to avoid dialing errors.
    • Cambodia does not observe daylight saving time, but the US does — check whether US clocks have shifted before scheduling calls in March and November.
    • Consider texting or messaging first to confirm the recipient is available, especially given the large time difference.

    Business etiquette

    • For business calls to the US, aim for 9 AM – 12 PM recipient time — early mornings are when most professionals are most responsive.
    • If coordinating garment or textile supply-chain calls, account for the fact that US buyers often operate on East Coast time even when based in other regions.
    • US business culture favors punctuality — if you schedule a call, dial at the agreed time to the minute.
    • Start with a brief greeting and state the purpose of your call clearly. US business communication tends to be direct and time-efficient.

    Sources

    1. 1
      Time difference: Cambodia to US

      Source for time zone offset data

    TROUBLESHOOTING

    Common Issues When Calling the US from Cambodia

    If your call isn't connecting, check these common problems before trying again.

    Call won't connect at all

    Double-check your exit code. Cambodia has multiple exit codes (001, 007, 008) depending on your carrier. Using the wrong one may cause the call to fail. On mobile, try using + instead.

    You hear a recording saying the number is not in service

    Verify you have the correct 3-digit area code. US cities often have multiple area codes, and some change over time. Also ensure you are not accidentally dialing a toll-free prefix (800, 855, etc.) as if it were a regular area code.

    Call connects but audio quality is poor

    International calls routed over traditional phone lines can suffer from latency on the Cambodia–US corridor due to the long distance. Try calling via Sayfone in your browser over a stable Wi-Fi or 4G connection for clearer audio quality.

    You're being charged unexpectedly high rates

    Cambodian carriers may charge premium rates for international calls to the US. Check your carrier's international rate card, or switch to Sayfone at $0.08 per minute for predictable, transparent pricing.

    US toll-free numbers (800, 855, etc.) don't work

    Most US toll-free numbers cannot be reached from international lines. Look for a direct-dial number on the company's website, often listed as an 'international callers' or 'calling from outside the US' option.

    Sources

    1. 1
      Troubleshooting international calls – Xe

      General troubleshooting for calls to the US

    Savings

    See what you could save

    Adjust the tools below to compare Sayfone with typical retail pricing for calls to United States. Start with one call, then layer on monthly volume to see the bigger picture.

    How to use these tools

    • Sayfone uses your live rate for calls to United States — the same basis as the rest of this page.
    • First, estimate savings on a single call length. Then, model a full month of minutes versus typical retail benchmarks.
    • Retail competitor rows are illustrative — not a quote from any carrier.

    One call — instant savings

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    Your call

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    $0.080 per minute

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    Competitors$2.40$0.20 / min
    Your savings$1.44$0.12 / min

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    Every month — stack it up

    Set monthly minutes and call type. Bars compare Sayfone to common retail benchmarks for the same volume.

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    220

    min / month

    AT&T / Verizon$862

    ~$3.92/min

    T-Mobile$651

    ~$2.96/min

    Calling cards$387

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    Google Voice$88

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    Annual saving vs. AT&T

    Based on 220 min/month

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    Before you go

    Open the full Cambodia to United States guide, check rates, or browse other how-to guides from Cambodia.

    FAQ

    Frequently Asked Questions About Calling the US from Cambodia

    Quick answers to the most common questions about making phone calls from Cambodia to the United States.

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