E.164 Converter
Convert any phone number to E.164 international format. Validates against 100+ country patterns.
Convert phone numbers to E.164 international format
Use this E.164 converter to normalize local, national, and international phone numbers into a clean plus-prefixed format for APIs, SMS providers, contact imports, and verification workflows.
Related phone number topics
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Common use cases
- Convert a local number into a plus-prefixed international phone number.
- Remove domestic trunk prefixes before storing a number in an API or CRM.
- Check country-specific examples before sending SMS or verification codes.
How to use E.164 Converter
- Enter the source phone number.
- Choose the number country.
- Copy the E.164 output for API, SMS, or contact storage.
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FAQ
What is E.164 format?
E.164 is the international phone number format that starts with a plus sign, country code, and subscriber number, such as +12025551234.
Why convert numbers to E.164?
E.164 is widely used by SMS APIs, verification systems, contact databases, and telecom integrations because it avoids local dialing ambiguity.
Does the converter verify live deliverability?
No. It normalizes and validates the format, but it does not check whether the carrier can deliver SMS to the number.