Phone Number Formatter & Validator
Parse, format, and validate international phone numbers. Get key information like E.164 format and country code.
The Phone Number Formatter & Validator is an essential utility for anyone working with international contact information. It parses phone numbers, validates their plausibility, and formats them into standard conventions like E.164. This is crucial for applications that need to store and use phone numbers reliably, such as for sending SMS messages or making calls. This tool performs all checks in your browser, ensuring the phone numbers you enter remain private.
E.164 is an international telephone numbering plan that ensures each device has a globally unique number. An E.164 number is formatted as `[+][country code][subscriber number]` and can have a maximum of 15 digits. For example, `+12125550123`. It is the recommended standard for all telephony applications and APIs, like Twilio, as it is unambiguous.
Does this tool check if a phone number is real or active?
No. This tool validates that the number *could* exist based on its format and country code rules. It cannot and does not check if the number is currently in service or assigned to a person. Its purpose is to prevent formatting errors, not to verify the existence of a line.
Do I need to include the country code?
Yes, for accurate validation and formatting, you should always include the country code, starting with a `+` symbol (e.g., `+1` for the US, `+44` for the UK).
Is my data secure?
Yes. All validation and formatting happens on your device in your browser. The phone number you enter is never sent to our servers, ensuring complete confidentiality.