+81 country code: Japan

Who uses the +81 code

+81 is the country code for Japan, the only country on this page. The official name is Japan, and the ISO code is JP. People and businesses in Japan use +81 numbers, and the Japanese demonym applies to them. The country sits in Asia, within the Eastern Asia subregion.

Location, language and money

The capital of Japan is Tokyo. The language spoken is Japanese. The currency is the Japanese yen. Local time is set by the Asia/Tokyo time zone at UTC+09:00.

Number format and reaching a +81 number

A Japanese mobile number written in international format looks like this: +81 90 1234 5678. The +81 replaces the leading zero of the national number, and the subscriber digits follow.

You can call or message a +81 number over the internet using a data connection. A voice over IP or messaging app carries the call or message over that connection rather than a standard mobile line. A stable data connection, either Wi-Fi or mobile data, supports the call or message. Check that the app you use supports calls or messages to Japanese numbers before you rely on it.

Slashtel sends prepaid mobile top-ups to Japan operators NTT Docomo, au and SoftBank. Use the link to top up a Japan number and add credit for the line you want to reach. The credit goes to the operator that serves the number, so choose the correct operator when you place the order. Keep the +81 format for the number you enter, with the leading zero dropped as in the example above. A top-up adds prepaid credit to the Japanese line, which the account holder can then use with their operator.

For reference, the details on this page are: country code 81, country Japan, ISO code JP, capital Tokyo, language Japanese, currency Japanese yen, region Asia, subregion Eastern Asia, time zone Asia/Tokyo at UTC+09:00. The international number example is +81 90 1234 5678, and the supported top-up operators are NTT Docomo, au and SoftBank.