Databases
Store one normalized representation to simplify deduplication and downstream processing.
Free developer tool
Phone number parser and E.164 formatter
Paste an international number to detect its calling code, or choose a default country for national input. Processing happens locally in your browser.
Parse or format a number
Detected country
Calling code
National digits
E.164
International
National
RFC 3966
Structural parsing only: this tool uses the 31-country GetPhoneNum dataset and basic length rules. Shared plans such as +1 and +7 cannot identify one country from the calling code alone. It does not confirm assignment, reachability, line type or SMS capability.
When to use E.164
Communications APIs
Many SMS, voice and identity providers expect a leading plus sign followed by country code and national number.
QA and migrations
Find records with missing country context, trunk prefixes or incorrect digit counts before import.