Phone Number Parser & Formatter

Overview

Parses a phone number, detects the country from its calling code, and formats it as E.164, international and RFC 3966 tel: URI forms. Enter a number in almost any shape — spaces, dashes, parentheses — and get clean, machine-readable versions you can paste into a database or a click-to-call link.

How It Works

Type or paste a number into the input box; the sample +14155552671 shows the expected shape. The tool strips everything except digits and a leading plus, matches the country code from a built-in table (US/Canada +1, UK +44, India +91, Germany +49, France +33, Japan +81), and shows four result cards: the detected country, the E.164 form (plus sign and digits, no punctuation), the international form with a space after the code, and the tel: URI. A 10-digit national number is additionally grouped as (NNN) NNN-NNNN. Everything updates live and each value is click-to-copy.

Step-by-Step Usage Guide

1. Paste the number with its country code — the + prefix tells the parser it is international.
2. Check the Country card: one of six supported countries, or Unknown if the code is outside the table.
3. Copy the E.164 value for APIs and databases, or the tel: URI for click-to-call links.
4. If the number shows as Unknown, verify it includes the country code and no extra leading digits.

Technical Specifications & Standards

E.164 is the ITU-T standard for international telephone numbers: a plus sign, a country code of one to three digits, and a national significant number, digits only, fifteen digits maximum — the format every messaging and voice API asks for. The tool emits E.164 by concatenating all digits after stripping punctuation, which satisfies the format's shape. Country detection is a straightforward prefix match over six codes, ordered so +1 is tested first; that small table is the honest limitation — a +1 match covers the whole North American Numbering Plan (US, Canada and the Caribbean +1 states alike, all reported as one), countries outside the six are labelled Unknown, and a number stored without its country code cannot be identified at all. The (NNN) NNN-NNNN grouping applies only when exactly ten national digits remain, which is the North American pattern; other countries' variable-length numbers are left as a plain digit run. RFC 3966 output wraps the E.164 value in tel: for use in href attributes.

Targeted Use Cases

• Normalizing user-entered phone numbers into E.164 before storing them for SMS or voice APIs.
• Building tel: links for a contact page so mobile browsers open the dialer with the right number.
• Cleaning a CRM import where the same number was typed a dozen different ways.
• Teaching or verifying the E.164 structure: plus, country code, national number, fifteen digits max.

Notes & Gotchas

• Always store numbers in E.164; keep the pretty (NNN) NNN-NNNN grouping as a display-only concern.
• Include the plus and country code in your input — without them, country detection cannot work reliably.
• Only ten-digit national numbers get the US-style grouping; other lengths are intentionally left as plain digits.
• For production validation of arbitrary countries, use a full numbering-plan library; this tool covers six countries by design.

Frequently Asked Questions