Format US Phone Number
This workflow focuses on the formatting and validation of US phone numbers. It can automatically clean non-numeric characters, verify the length of the number and the validity of the country code, and output in various standard formats, such as E.164 format and international dialing format. Its core features include support for handling numbers with extensions and automatic clearing of invalid numbers, ensuring that the input and output phone numbers are consistent and standardized. It is suitable for scenarios such as CRM systems, marketing platforms, and customer service systems, enhancing data quality and the level of automation in business processes.

Workflow Name
Format US Phone Number
Key Features and Highlights
This workflow is specifically designed for formatting and validating US phone numbers. It automatically cleans non-numeric characters from the input, verifies the number length and validity of the country code, and converts the number into multiple common formats (such as E.164, national format, international format, etc.). It supports handling numbers with extensions, ensuring the output phone numbers are standardized and consistent.
Core Problems Addressed
- Diverse input phone number formats mixed with various symbols, making uniform processing difficult
- Numbers from different sources may lack country codes or have inconsistent formatting
- Incorrect number length or invalid characters causing data errors
- Need for multiple output formats to meet different system or business requirements
Application Scenarios
- Standardizing phone numbers for unified use across CRM systems, marketing platforms, customer service systems, etc.
- Providing compliant and correctly formatted phone numbers in automated workflows
- Phone number data cleansing and validation to improve data quality and reduce manual intervention
- Supporting batch processing and integration to enhance business process automation
Main Process Steps
- Trigger Execution: Receive phone number input from other workflows
- Remove Formatting: Extract numeric digits using regular expressions
- Length Check: Verify if the phone number length meets standards (10 or 11 digits)
- Country Code Validation: Check if the leading digit is the valid US country code “1” and add it automatically if missing
- Format Output: Generate multiple formatted versions such as E.164 format, national format with parentheses, international dialing format, etc.
- Invalid Number Handling: Automatically clear numbers that do not meet criteria to prevent misuse downstream
Involved Systems or Services
- Built-in n8n nodes for triggering and conditional logic
- Purely local logic processing without reliance on external third-party services
Target Users and Value
- Business process automation developers requiring precise handling of US phone numbers
- Customer service and sales automation systems needing standardized phone data input and output
- Data analysts and data cleansing professionals aiming to improve phone number data quality
- Any enterprises or teams needing to convert unstructured phone numbers into standardized formats
This workflow ensures US phone numbers conform to standard formats through rigorous digit extraction and conditional validation, significantly enhancing the accuracy and compatibility of contact information in automated processes.