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How to Call Slovakia from the United States

Country code +421 — Dial 011 421 91X XXX XXX from a US landline or +421 91X XXX XXX from a mobile phone.

+421
Slovakia Country Code

What to Dial

  1. 1Dial 011 from a US landline, or + from a mobile (hold the 0 key).
  2. 2Dial 421, the country code of Slovakia.
  3. 3Dial the number: 9 digits for mobiles and 6 to 9 for landlines, without the leading 0 used for calls inside Slovakia.
Calling a… Written in Slovakia From a US landline From a cell phone
Mobile 091X XXX XXX 011 421 91X XXX XXX +421 91X XXX XXX
Landline (Bratislava) 02 XXX XXX XX 011 421 2 XXX XXX XX +421 2 XXX XXX XX

X stands for any digit. Mobile numbers start with 090–091 or 094–095. More number types: Slovakia phone number format.

Mobile or Landline?

Slovakia had 140 mobile subscriptions and 8.3 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 Slovakia mobiles.

Source: World Bank (ITU).

Calling Tips for Slovakia

Best Time to Call

To reach someone between 9 AM and 8 PM in Bratislava, call between 3:00 AM–2:00 PM EDT (12:00 AM–11:00 AM PDT). Slovakia changes its clocks for daylight saving time.

Slovakia is on UTC+2, 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 (EDT)
--:--
UTC-4
+6h
Slovakia
--:--
UTC+2

Frequently Asked Questions

How do I call Slovakia from the US?
From a US landline, dial 011, then 421, then the number without its leading 0: 011 421 91X XXX XXX for a mobile. From a cell phone, dial +421 91X XXX XXX.
Do I dial the 0 when calling Slovakia from abroad?
No. The leading 0 is only for calls inside Slovakia. A number written 091X XXX XXX at home is dialed +421 91X XXX XXX from abroad.
How many digits is a phone number in Slovakia?
9 digits for mobiles and 6 to 9 for landlines after the country code +421. Mobile numbers start with 090–091 or 094–095 when written with the leading 0.
What time should I call Slovakia from the US?
Slovakia is 6 hours ahead of New York (UTC+2 in Bratislava). To reach someone between 9 AM and 8 PM there, call between 3:00 AM–2:00 PM EDT, or 12:00 AM–11:00 AM PDT on the West Coast. Slovakia uses daylight saving time, so the difference changes during the year.
How do people in Slovakia 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 Slovakia?
It depends on your plan: many US plans charge per minute for international calls, and calls to Slovakia mobiles often cost more than calls to landlines. Internet calling apps are free when both people have the same app.
Slovakia Quick Info
Country Code +421
ISO Code SK
Capital Bratislava
Time Zone UTC+2
Exit Code (US) 011
Full Country Profile
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