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International phone number formatter

Paste one number or a whole list. Each comes back in E.164 (the + format phone systems and SIP trunks expect), with what was changed, whether it is valid and how to dial it from your country.

Up to 200 numbers. Everything runs in your browser; nothing is sent anywhere.

United States+1
3 numbersCopy all as CSV
  1. +442079460018Valid
    You typed
    +44 20 7946 0018
    International
    +44 20 7946 0018
    Dial from United States
    011 44 20 7946 0018
    Country
    United Kingdom, landline
    • Already international: only spaces and punctuation removed.
  2. +12125550123Valid
    You typed
    +1 (212) 555-0123
    International
    +1 212 555 0123
    Dial from United States
    (212) 555-0123
    Country
    United States, landline or mobile
    • Already international: only spaces and punctuation removed.
  3. +390645678900Valid
    You typed
    +39 06 4567 8900
    International
    +39 06 4567 8900
    Dial from United States
    011 39 06 4567 8900
    Country
    Italy, landline
    • Already international: only spaces and punctuation removed.
3

How the formatter works

Three steps, on the same number data Android uses.

It runs on Google's open libphonenumber data, in your browser. A valid result means the number fits the country's plan, not that someone answers it. The rules behind it: what E.164 format is.

  1. 1

    It reads the number as you typed it

    A leading + or your country's exit code means the country code follows. Anything else is read as a number in your country.

  2. 2

    It applies that country's rules

    It drops a trunk prefix only where the country drops it, and keeps the leading 0 where it belongs, as in Italy.

  3. 3

    It checks the result

    Length and leading digits are compared with the country's published number ranges, which also gives the number type.

FAQ

Formatter questions

How do I convert a phone number to international format?
Start with +, then the country code, then the number without the trunk prefix most countries dial at home (often a 0). Or paste it above and choose the country it belongs to.
What is an example US phone number with the country code?
+1 212 555 0123 written for people, +12125550123 in E.164. The 1 is the country code; 212 is the area code. Numbers from 555 0100 to 555 0199 are kept for examples, so this one rings nobody.
Why does a number show as not valid?
Its length or first digits do not match any range the country has published. The most common causes are a missing digit, an extra 0 after the country code, or the wrong country chosen for a national number.
Can I format a whole list?
Yes. Paste up to 200 numbers, one per line, then copy every result as CSV with columns for what you typed, E.164, validity, type and country.
Is anything I paste stored or sent?
No. The formatter runs entirely in your browser. Close the page and the numbers are gone.

Numbers in E.164. Now see what a minute costs.

Per-minute rates by country, mobile and landline: international call rates.

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