Phone Validator
Enter a phone number and select a country to validate against its regex pattern. All processing happens in your browser.
Validate phone numbers by country, E.164 format, and regex pattern
This free phone number validator checks whether a number matches the selected country rule, converts it to E.164 where possible, and shows the dial code, ISO code, national example, and validation status.
Related phone number topics
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Common use cases
- Validate a number before importing contacts into an SMS platform, CRM, or support tool.
- Check whether a number is already in E.164 format or needs a country dial code.
- Compare national phone number input against country-specific regex rules.
How to use Phone Number Validator
- Enter a phone number.
- Select the expected country.
- Run validation and review the E.164 output, dial code, and country match.
Related phone number tools
FAQ
What is a phone number validator?
A phone number validator checks whether a number matches the expected country code, length, prefix, and E.164 pattern.
Can it validate international phone numbers?
Yes. Select the country, enter the number, and the tool checks international and national formats where rules are available.
Does this guarantee the number is active?
No. It validates format, not live carrier ownership or whether the number can currently receive calls or SMS.