Japanese mobile numbers
Mobile numbers use 070, 080, or 090 and contain 11 digits domestically. The newer 060 range is also recognized when its pattern is valid.
JAPANESE PHONE FORMATTER
Turn 090 into +81 correctly.
Paste a Japanese phone number and instantly get clean domestic and international versions.
FORMAT MATCHMobilePattern only—assignment and existence are not verified.
Use inside Japan and on most Japanese forms.
Use when sharing the number outside Japan.
Useful for forms that reject spaces or hyphens.
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JAPAN PHONE NUMBER FORMAT
How do you write a Japanese phone number internationally?
Use Japan’s country code +81 and remove the number’s first domestic zero. A Japanese mobile number such as 090-1234-5678 becomes +81 90-1234-5678.
Tokyo and Osaka landlines
Tokyo uses area code 03 and Osaka uses 06. Internationally, 03 becomes +81 3 and 06 becomes +81 6.
Forms without spaces
If a form rejects spaces and hyphens, use the compact format such as +819012345678.
Common Japanese phone number examples
TypeDomesticInternational
Mobile090-1234-5678+81 90-1234-5678
Tokyo03-1234-5678+81 3-1234-5678
Osaka06-1234-5678+81 6-1234-5678
VALIDATION LIMIT
A valid pattern is not a verified phone line.
This formatter checks the number against current Japanese numbering metadata and formats supported mobile, landline, IP-phone, toll-free, and unified-access patterns. It cannot tell whether a number has been assigned, exists, is reachable, or belongs to a particular person or business.
Help and examples
To write a Japanese number internationally, replace the leading domestic 0 with Japan’s country code +81. Restore the 0 when converting back for use inside Japan.
Example: 090-1234-5678 → +81 90-1234-5678
Common mistakes
- Writing +81 090 and keeping the domestic zero
- Dropping digits while removing hyphens
- Using an international format in a field that requires a domestic number
Questions
Do I remove the first zero after +81?
Yes. 090 becomes +81 90, and a Tokyo 03 number becomes +81 3.
What if a form rejects + or spaces?
Use the compact format only if the form allows international numbers; otherwise enter the domestic number.