How does NumSwift extract phone numbers from text?

NumSwift uses advanced pattern recognition to automatically identify and extract phone numbers from any text you paste. It supports international formats and validates numbers in real-time.

Can I send WhatsApp messages without saving contacts?

Yes! NumSwift allows you to send WhatsApp messages directly to any phone number without adding it to your contacts. Just extract the number and click the WhatsApp button.

Is my data safe when using NumSwift?

Absolutely. NumSwift is completely privacy-focused - all data processing happens locally in your browser. No text or phone numbers are sent to our servers.

Does NumSwift work with international phone numbers?

Yes, NumSwift supports phone numbers from all countries and automatically detects the country format. You can also manually select your country for better accuracy.

Can I extract multiple phone numbers at once?

Yes. NumSwift can extract many phone numbers from a single text block. It automatically deduplicates results and keeps up to 50 numbers for quick access.

How do I format a phone number for international calling?

Paste the number into NumSwift and select the correct country. NumSwift validates it and shows the properly formatted international version with the correct country code.

Phone Number Validator

Check if a phone number is valid. Paste any number and NumSwift validates the format, country code, and digit count using the same library Google uses.

Last updated: 2026-02-21

Extract Phone Numbers Instantly

Paste text to extract phone numbers and contact directly

How to Use the Phone Number Extractor

Start by pasting text with phone numbers to see them appear here!

1. Copy Text

Copy text with phone numbers

2. Extract Numbers

Paste & extract

3. Use the Numbers

Call, SMS, or WhatsApp

🔒 Privacy-First Tool

All processing happens in your browser. Your data never leaves your device and is not stored on our servers.

Need help or have feedback? Contact us - we'd love to hear from you!

💡 Pro Tips

• Paste text from emails, documents, or websites
• Works with international phone numbers from all countries
• Click WhatsApp to message without saving contacts
• Your extracted numbers are saved locally for quick access

Connect with the creator:

How to Validate a Phone Number

Select the country the phone number belongs to
Paste the phone number into the text box
NumSwift checks the format, digit count, and country code
Valid numbers appear with their formatted international version
Invalid numbers are rejected and won't appear in the results

What Validation Checks

Correct digit count for the selected country
Valid country code recognized by international standards
Recognized area code pattern for the region
Proper number type detection (mobile, landline, toll-free)

Frequently Asked Questions

▶How does NumSwift validate phone numbers?

NumSwift uses libphonenumber, the same phone number parsing library used by Google, Android, and major tech companies. It checks the number format, digit count, and country code against known patterns for each country.

▶Can NumSwift check if a phone number is currently in service?

No. NumSwift validates the format of a phone number — correct digit count, valid country code, and recognized area code pattern. It cannot verify whether the number is currently active or in service.

▶Does it support international phone numbers?

Yes. NumSwift supports phone number validation for over 200 countries and territories. Select the country or paste the number with its country code for automatic detection.

▶What does "valid" mean for a phone number?

A valid phone number has the correct format for its country: the right number of digits, a recognized country code, and a valid area code pattern. Validity refers to format correctness, not whether the number is reachable or in service.