Phone number length checker: how many digits, and is each number one short?
In short: Digits allowed after the country code for 245 countries and territories, mobiles and landlines, plus a list check that says how many digits each number is short or over. Limit: Length only: a right-length number may still be unallocated, disconnected or reassigned.
A US or Canadian phone number has 10 digits after the +1 country code; a UK mobile has 10 after +44, and other countries allow other lengths. Pick a country to see its lengths from the numbering plan, or paste a list to see each number's digit count, the lengths allowed and how many digits it is short or over. It runs in your browser.
Price: this tool is free. Live line type and carrier lookups come with Pro + Phone at $49.99/mo; email checking is from $9/mo. See pricing
Used for numbers written without a + country code.
How many digits does a United States number have?
- After +1
- 10 digits
- Mobiles
- 10 digits
- Landlines
- 10 digits
- With the country code
- 11 digits (E.164 allows 15 at most)
Digits after the country code, without a trunk 0. From the country’s numbering plan in Google’s libphonenumber data.
Sample result
415-555-013 has 9 digits; US numbers have 10 after +1, so it's 1 digit short.
- Phone number
- 415-555-013
- Digits after +1
- 9
- Allowed
- 10
What this means for you
A missing or extra digit is usually a typo or a lost country code; fix it before you dial.
- Digits allowed for 245 countries
- Mobile and landline lengths
- How many digits short or over
- Right length isn't the same as valid
- Length
- libphonenumber
- No signup
By SimpleVerifier Team · Last updated · Runs in your browser; nothing you paste is sent to us
Also in: Português (Brasil) · Español · Deutsch · Français
How do I check how many digits a phone number should have?
- Pick the country you want to know about, or the one most of your list is in. Its digit counts for mobiles and landlines show straight away.
- Paste numbers, one per line, or upload a CSV; the phone column is found automatically.
- Press Check the lengths. Each number gets its digit count after the country code, the lengths its country allows, and how many digits it's short or over.
- Download the report, only the wrong lengths to fix, or the list without them.
Example
- You enter
(415) 555-0132,415-555-013,+1 415 555 01322and+44 7911 1234567, default country United States.- You get
(415) 555-0132has the right 10 digits and is valid;415-555-013has 9, 1 digit short;+1 415 555 01322has 11, 1 digit too many; the UK number has 11 after +44, where 7, 9 or 10 are allowed, so 1 digit too many. With United States picked, the panel reads 10 digits for mobiles and landlines, 11 with the country code.- Limits
- Up to 500 rows a run without an account and 25,000 when signed in with Google; files up to 25 MB. It runs in your browser.
How many digits is a phone number?
It depends on the country, and sometimes on the type of number. Under the North American Numbering Plan every US and Canadian number has 10 digits after +1: a three-digit area code, a three-digit exchange and four more. UK mobiles have 10 digits after +44 (11 with the leading 0 used at home), while some UK landlines have 9. India's mobiles have 10 after +91; German numbers run from 4 to 15 digits in all.
ITU-T Recommendation E.164 caps the whole international number, country code included, at 15 digits. The counts on this page come from Google's open-source libphonenumber data, which tracks each country's own numbering plan; they're the digits after the country code, without the trunk 0 a country adds for domestic calls.
Why is a phone number too short or too long?
Usually a typo, a lost digit when a spreadsheet treated the number as a figure, or a country code typed twice or not at all. A US number one digit short (415-555-013) is a dropped digit; one digit over (+1 415 555 01322) is a doubled one. A number that looks too short for the default country may simply be from another country and written without its + code.
Leading zeros are the classic spreadsheet loss: Excel stores 07911 123456 as 7911123456. Read with the UK as the default country that is still a valid mobile; read as a US number it has the right 10 digits but isn't a valid number, so the default country matters. Set the default country to the one your list belongs to, or add codes with the country code tool.
Is the right length the same as a valid number?
No. Length is the first check, not the last. A number can have exactly the right number of digits and still sit in a range that the country's plan never allocated, such as a US number whose area code starts with 1. Those rows say "Length allowed, but not a valid number"; the bulk phone number validator gives the full format check.
Neither check can tell whether a number is in service or who holds it. That needs a live carrier lookup, and nothing on this page contacts a network.
Is this better than counting with LEN() in Excel?
| This tool | LEN() in a spreadsheet | |
|---|---|---|
| Spaces, brackets and dashes | Ignored | Counted |
| Country code | Read and separated | Counted with the rest |
| What length is right | From each country's plan | You type it in |
| Short or over by | Per number, to the nearest allowed length | Another formula |
Who uses this tool, and for what?
- CRM admins
- Find the numbers that lost a digit or a leading zero in an import before they fail in the dialer.
- Developers
- Look up the lengths a country allows when setting a phone field's minimum and maximum, then validate with libphonenumber.
- SMS teams
- Pull the wrong-length rows out of an audience before upload, so the platform doesn't reject the file.
- Data teams
- Measure how many rows in a vendor file have a doubled or missing digit before paying for it.
What can’t this tool tell you?
- Length only: a right-length number may still be unallocated, disconnected or reassigned.
- Numbers without a + code are read with the default country, so a foreign number can look the wrong length.
- Where a country allows several lengths, the off-by count is to the nearest one, not to the type of number you meant.
- Up to 500 rows a run without an account and 25,000 when signed in with Google.
Common questions
- How many digits is a US phone number?
- Ten: a three-digit area code, a three-digit exchange and a four-digit line number, as in (415) 555-0132. With the +1 country code, 11 digits.
- How many digits is a UK mobile number?
- Ten after +44, starting with 7, as in +44 7911 123456. Written at home with the leading 0, that's 11 digits: 07911 123456.
- What is the maximum length of a phone number?
- 15 digits including the country code, set by the ITU's E.164 recommendation. Most numbers are shorter: 11 or 12 digits in full is typical.
- Does the leading 0 count?
- Not in the counts here. The 0 (or another trunk prefix) is only dialled inside the country and is dropped after a country code, so the digits counted are the ones after the code in E.164.
- Does a right-length number mean it works?
- No. It means the digit count fits the country's plan. The number may still be unallocated, disconnected or reassigned; a format check tells you more, and only a live carrier lookup says whether a line exists.
Sources
Well formatted is not the same as reachable.
This tool fixes how numbers are written. It cannot tell you whether a line is mobile, landline or VoIP, or which carrier holds it. That takes a live carrier lookup, which is what Pro + Phone ($49.99/mo) adds.
- Upload a CSV up to 100,000 rows with an email or phone column
- 5,000 live carrier lookups a month: carrier name and real line type
- Emails in the same file get a real SMTP mailbox check
Plans from $9 a month, cancel anytime, no contract. Sign in with Google and your first 100 email checks are free, no card. The free tools stay free either way.