Phone Number Formatter - Free Online Tool

★★★★½ 4.5 (262 ratings)

🔒 Client-side — Your data never leaves your browser ✅ 100% Free — No signup, no limits ⚡ Instant — No server processing

📋 How to Use

1. Enter Number — Enter the phone number to format
2. Select Country — Select or auto-detect country code
3. Pick Format — Choose output format (E.164/International/National/RFC3966)
4. Copy Result — Copy the formatted number or validate it

E.164 is the international phone number standard defined by ITU, formatted as: +[country code][phone number], up to 15 digits. For example, a US number in E.164 format is +120****1234. This is the standard format for international phone number storage and transmission.

This tool supports 200+ country phone number formats, including USA (+1), UK (+44), China (+86), Japan (+81), Australia (+61), Germany (+49), and more. Complete country codes and number length rules are built-in.

Completely secure. All phone number formatting happens locally in your browser — numbers are never sent to any server. This is a pure frontend tool, use it with confidence.

Supports E.164 format (+120****1234), International format (+1 202 555 1234), National format ((202) 555-1234), and RFC3966 format (tel:+1-202-555-1234). Plain digit format (remove spaces/parentheses/dashes) is also supported.