Quick Answer
Dial +855 followed by the number. On a browser, use Sayfone for transparent per-minute rates; on a landline, connect via your carrier.
$0.18
Per minute
+855
Country code
HD
Call quality
Landline rate
$0.18/min
Mobile rate
$0.18/min
Same per-minute Sayfone rate for landline and mobile.
Average call quality
Steps at a glance
STEP-BY-STEP
Follow these steps whether you're using Sayfone or a traditional phone line.
Start by dialing 011, which is the United States international access code. This signals to your carrier that you are making an international call.
Dial: 011
Next, dial 855, which is Cambodia's country code. This is the first numeric identifier for all calls to Cambodia.
Dial: 011 + 855
Cambodia uses city/area codes for landlines. For example, Phnom Penh is 23, Siem Reap is 63, and Sihanoukville is 34. Mobile numbers do not require an area code. If dialing a mobile, skip this step.
For Phnom Penh landline: 011 + 855 + 23 + [7-digit local number]
Finally, dial the recipient's local phone number. Landlines in major cities typically have 7 digits; mobile numbers are 8–9 digits starting with 7, 8, 9, or 10.
Complete: 011 + 855 + 23 + 6234567 (Phnom Penh landline)
If calling via Sayfone's browser-based platform, enter the full number starting with +855 (no need for 011). The system will display your per-minute rate before you connect.
Enter: +855 23 6234567, then review the rate and place the call
Dialing format reference
+855
Use these patterns when entering a full international number to +855.
Mobile
+855 7X, +855 8X, +855 9X, +855 10X (8–9 digits after country code)
Landline
+855 [area code] [local number] (area code + 7-digit local number)
Major city area codes
KEY RULES
Understand the numbering conventions and rules to dial Cambodia correctly.
If you see a Cambodian number written with a leading 0 (e.g., 023 612345), remove it before dialing. The 0 is only used domestically within Cambodia. When calling from the United States, always use the format +855 23 612345 (without the 0).
Cambodian mobile numbers are 8–9 digits long and begin with 7, 8, 9, or 10 as the first digit after the country code. These do not require an area code.
Cambodian landlines are city-specific and require the two-digit area code (e.g., 23 for Phnom Penh, 63 for Siem Reap). The area code is followed by a 7-digit local number.
From the United States, you must begin with 011 to signal an international call (unless using Sayfone, which accepts +855 directly).
CALLING TIPS
Cambodia is 15 hours ahead of US Eastern Time and 12 hours ahead of US Pacific Time (based on standard time; daylight saving can shift this). Plan calls during reasonable hours in Cambodia.
Cambodia Morning & Afternoon
8 AM – 6 PM ICT
Best time for business and general calls
US Night (Eastern)
5 PM – 3 AM EST
When you should call from the Eastern US
US Night (Pacific)
2 PM – 12 AM PST
When you should call from the Pacific US
Sources
SUPPORT
Most calls to Cambodia connect without issue, but some number types or older connections may require special handling.
International calls can take 1–3 seconds to connect. This is normal and does not indicate a failed call. Wait for at least three rings before hanging up.
Landlines in Cambodia may experience occasional static or echo, particularly on older lines. Mobile-to-mobile calls are generally clearer. If a call drops, try calling back immediately.
Government offices, hospitals, and some older institutions may use legacy phone systems that do not accept direct international dialing. Ask a contact to call you back, or reach out via email first.
If a number is not recognized, verify that you have the correct area code and that you removed any leading 0. Also confirm the number is written in the national format (e.g., 023 not 023 with extra digits).
On rare occasions, Sayfone's browser-based system may not connect to certain remote or rural Cambodian numbers due to carrier routing. If this occurs, try again or contact Sayfone support.
Savings
Adjust the tools below to compare Sayfone with typical retail pricing for calls to Cambodia. Start with one call, then layer on monthly volume to see the bigger picture.
How to use these tools
Set duration and country. See Sayfone vs. an illustrative retail rate for the same call.
I'm calling…
Enable enterprise discount
Save additional 40% (enterprise)
Your call
Your call will cost
$2.16
$0.18 per minute
That's 60% less than competitors
Set monthly minutes and call type. Bars compare Sayfone to common retail benchmarks for the same volume.
Drag slider to adjust
220
min / month
~$8.82/min
~$6.66/min
~$3.96/min
~$0.90/min
$0.180/min
Annual saving vs. AT&T
Based on 220 min/month
Before you go
Open the full United States to Cambodia guide, check rates, or browse other how-to guides from United States.
United States to Cambodia calling guide
Per-minute rates, savings calculator, and what to expect on this route.
What it costs to call Cambodia
See Sayfone’s per-minute rate for Cambodia and how it compares before you dial.
Route guides from United States
Other how-to guides from United States
FAQ
Quick answers to common questions about calling Cambodia from the United States.
Ready to Call?
Use Sayfone to call Cambodia from your browser with transparent, affordable rates. No app download, transparent pricing.
The modern Skype alternative. No downloads, no contracts, just crystal-clear calls from any device, anywhere.