Hong Kong flag HK

How to Call Hong Kong from the United States

Country code +852 — Dial 011 852 51XX XXXX from a US landline or +852 51XX XXXX from a mobile phone.

+852
Hong Kong Country Code

What to Dial

  1. 1Dial 011 from a US landline, or + from a mobile (hold the 0 key).
  2. 2Dial 852, the country code of Hong Kong.
  3. 3Dial the number: 8 digits, exactly as written: Hong Kong has no leading 0 to drop.
Calling a… Written in Hong Kong From a US landline From a cell phone
Mobile 51XX XXXX 011 852 51XX XXXX +852 51XX XXXX
Landline 2123 XXXX 011 852 2123 XXXX +852 2123 XXXX

X stands for any digit. Mobile numbers start with 4, 5, 6, 7, 8 or 9. More number types: Hong Kong phone number format.

Mobile or Landline?

Hong Kong had 365 mobile subscriptions and 44.6 landlines per 100 people in 2024. Most people you call will be on a mobile, so ask for their mobile number and check what your plan charges for calls to Hong Kong mobiles.

Source: World Bank (ITU).

Calling Tips for Hong Kong

Best Time to Call

To reach someone between 9 AM and 8 PM in Hong Kong, call between 8:00 PM–7:00 AM EST (5:00 PM–4:00 AM PST). Hong Kong doesn’t change its clocks, so the gap moves by an hour when the US does.

Hong Kong is on UTC+8, 13 hours ahead of US Eastern Time right now.

Cost Saving Tips

  • VoIP services such as Google Voice or Vonage usually charge less per minute than a carrier's standard international rate.
  • WiFi calling apps (WhatsApp, Viber, FaceTime) are free when both parties have the app.
  • Check your carrier's international plan — many offer add-on packages.

Time Difference

US Eastern (EST)
--:--
UTC-5
+13h
Hong Kong
--:--
UTC+8

Frequently Asked Questions

How do I call Hong Kong from the US?
From a US landline, dial 011, then 852, then the number: 011 852 51XX XXXX for a mobile. From a cell phone, dial +852 51XX XXXX.
Do I need to drop a 0 when calling Hong Kong?
No. Hong Kong has no trunk prefix: dial every digit after +852 exactly as written, for example +852 51XX XXXX.
How many digits is a phone number in Hong Kong?
8 digits after the country code +852. Mobile numbers start with 4, 5, 6, 7, 8 or 9.
What time should I call Hong Kong from the US?
Hong Kong is 13 hours ahead of New York (UTC+8 in Hong Kong). To reach someone between 9 AM and 8 PM there, call between 8:00 PM–7:00 AM EST, or 5:00 PM–4:00 AM PST on the West Coast. Hong Kong doesn't change its clocks, so the difference shifts by an hour when the US switches to or from daylight saving time.
How do people in Hong Kong call the US?
They dial the exit code 00, then 1 and the 10-digit US number: 00 1 XXX XXX XXXX, or +1 from a mobile.
How much does it cost to call Hong Kong?
It depends on your plan: many US plans charge per minute for international calls, and calls to Hong Kong mobiles often cost more than calls to landlines. Internet calling apps are free when both people have the same app.
Hong Kong Quick Info
Country Code +852
ISO Code HK
Capital Hong Kong
Time Zone UTC+8
Exit Code (US) 011
Nearby Countries