Czech Republic flag CZ

How to Call Czech Republic from the United States

Country code +420 — Dial 011 420 60X XXX XXX from a US landline or +420 60X XXX XXX from a mobile phone.

+420
Czech Republic Country Code

What to Dial

  1. 1Dial 011 from a US landline, or + from a mobile (hold the 0 key).
  2. 2Dial 420, the country code of the Czech Republic.
  3. 3Dial the number: 9 digits, exactly as written: Czech Republic has no leading 0 to drop.
Calling a… Written in Czech Republic From a US landline From a cell phone
Mobile 60X XXX XXX 011 420 60X XXX XXX +420 60X XXX XXX
Landline (Prague) 212 XXX XXX 011 420 212 XXX XXX +420 212 XXX XXX

X stands for any digit. Mobile numbers start with 60, 70–73, 77 or 79. More number types: Czech Republic phone number format.

Mobile or Landline?

The Czech Republic had 127 mobile subscriptions and 10.8 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 Czech Republic mobiles.

Source: World Bank (ITU).

Calling Tips for Czech Republic

Best Time to Call

To reach someone between 9 AM and 8 PM in Prague, call between 3:00 AM–2:00 PM EST (12:00 AM–11:00 AM PST). The Czech Republic changes its clocks for daylight saving time.

The Czech Republic is on UTC+1, 6 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
+6h
Czech Republic
--:--
UTC+1

Frequently Asked Questions

How do I call the Czech Republic from the US?
From a US landline, dial 011, then 420, then the number: 011 420 60X XXX XXX for a mobile. From a cell phone, dial +420 60X XXX XXX.
Do I need to drop a 0 when calling the Czech Republic?
No. Czech Republic has no trunk prefix: dial every digit after +420 exactly as written, for example +420 60X XXX XXX.
How many digits is a phone number in the Czech Republic?
9 digits after the country code +420. Mobile numbers start with 60, 70–73, 77 or 79.
What time should I call the Czech Republic from the US?
The Czech Republic is 6 hours ahead of New York (UTC+1 in Prague). To reach someone between 9 AM and 8 PM there, call between 3:00 AM–2:00 PM EST, or 12:00 AM–11:00 AM PST on the West Coast. The Czech Republic uses daylight saving time, so the difference changes during the year.
How do people in the Czech Republic 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 the Czech Republic?
It depends on your plan: many US plans charge per minute for international calls, and calls to Czech Republic mobiles often cost more than calls to landlines. Internet calling apps are free when both people have the same app.
Czech Republic Quick Info
Country Code +420
ISO Code CZ
Capital Prague
Time Zone UTC+1
Exit Code (US) 011