Phone Number Validator — Clean, Validate & Format to E.164

Paste messy numbers — get stripped formatting, country detection from the prefix, length sanity checks and clean E.164 output ready for databases and APIs.

Quick answer: Free phone number validator: clean, validate and format numbers to E.164 international standard — plus country-code lookup for 20+ countries. For testing and data cleanup.

Phone number (any human format)

–E.164 (copy this)

–Country (from prefix)

–Structure

How to use

Paste any format — (0300) 123-4567, 00971 50 123 4567, +92-300-… all work.
Read the analysis — detected country, digit count, structural verdict.
Copy E.164 — the canonical form your APIs and databases want.

About this tool

Every messaging API (Twilio, WhatsApp Business, Firebase) wants numbers in E.164 format: +, country code, subscriber number, no spaces or dashes. This tool cleans human-entered numbers, detects the country from calling codes (US/CA +1, UK +44, UAE +971, PK +92, India +91, Germany +49 and more), runs length sanity checks per region, and outputs the canonical E.164 string plus a pretty international display format. It is a structural validator for testing and data cleanup — it cannot confirm a line is active.

FAQ

Can this tell me if a number is active/real?

No — structural validation only. Line-active checks require carrier lookups (paid APIs, requires consent).

What is E.164 and why care?

The international standard: '+' + up to 15 digits. Most SMS/WhatsApp APIs reject anything else — this outputs it automatically.

Which countries are detected?

20+ major calling codes including US/CA, UK, UAE, Saudi, Pakistan, India, Germany, France, Australia, Japan, Brazil, Nigeria.

Rate this tool

Your rating stays in this browser (local storage) — nothing is sent to any server.

Related tools

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The complete phone number validator guide

Prefer the long version — a worked example, the mistakes people actually make, and answers to real questions? The blog guide Phone Number Validator — Complete Guide, Mistakes & FAQ covers all of it step by step.

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Phone Number Validator — Clean, Validate & Format to E.164

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About this tool

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The complete phone number validator guide