WhatsApp Bulk Number Validator & CSV Cleaner

Clean messy Excel or CRM phone lists in seconds. Automatically strip spaces, dashes, and leading zeros, prepend missing country codes, remove duplicates, and export a WABA-ready CSV.

1. Paste Raw Phone Numbers

Default Country Code

Remove Duplicate Numbers Include '+' Prefix (e.g. +91...)

Paste Numbers (1 per line, or "Name, Phone")

2. Cleaned Broadcast List Summary

4Valid Ready

1Duplicates

1Invalid

Name	Cleaned E.164	Status
Rahul Sharma	919876543210	Valid E.164
Priya Patel	919811122333	Added +91
Contact	919876543210	Duplicate removed
Contact	919820011223	Added +91
Contact	14155552671	Valid E.164
Contact	12345	Invalid length (5 digits)

How to Prepare Contact Lists for WhatsApp Cloud API Broadcasts

1. Use International E.164 Format

Meta requires every recipient number to include its country dialing code (e.g., 919876543210 for India) without spaces, parentheses, or hyphens.

2. Strip Trunk Leading Zeros

Numbers exported from local billing software often start with a trunk 0 (like 09876543210). Stripping the leading zero before adding the country code prevents delivery failures.

3. Deduplicate Before Sending

Removing duplicate phone entries ensures a customer never receives the same promotional broadcast twice—saving you Meta messaging fees and preventing spam complaints.

Frequently Asked Questions

Meta WhatsApp Cloud API requires all recipient phone numbers to be in international E.164 format: country code followed by subscriber number, with no spaces, dashes, brackets, or leading zeros (for example, 919876543210 for India or 14155552671 for the US).

Your data is 100% private. All phone number cleaning, deduplication, and CSV formatting happen entirely inside your web browser using client-side JavaScript. Zero phone numbers or contacts are ever transmitted to any server.

Select your default country code above (e.g., +91 for India). Our tool automatically strips leading zeros (like 09876543210) and prepends the selected country code so every valid 10-digit local number becomes ready for WhatsApp broadcasting.

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