Call Japan
Country Code +81
Calling Tokyo, Osaka, or any Japanese mobile from Honolulu is simple. Use the country code +81 and drop the leading zero from area and mobile codes. Make the call right from your browser without installing apps.
How to Call Japan from Honolulu
The steps below explain dialing Japan from Hawaii using a standard international format and how it maps to StartACall browser calling.
US Exit Code
Dial 011. On mobile or when using VoIP, you can use the plus sign instead.
Japan Code (+81)
Dial +81 to connect to Japan.
Area or Mobile Code
Drop the leading zero from area or mobile codes. For example, Tokyo 03 becomes 3. Mobile prefix 090 becomes 90 when calling internationally.
Dialing Examples
When dialing from Honolulu, use the exit code plus country code then the area and local number without the initial zero.
Japan City Codes
Common area codes for major Japanese cities. Remember to drop the leading zero when calling internationally.
| City | Region | Area Code |
|---|---|---|
| Tokyo | Kanto | 3 |
| Osaka | Kansai | 6 |
| Nagoya | Chubu | 52 |
| Sapporo | Hokkaido | 11 |
| Fukuoka | Kyushu | 92 |
| City | Region | Area Code |
|---|---|---|
| Yokohama | Kanto | 45 |
| Kobe | Kansai | 78 |
| Kyoto | Kansai | 75 |
| Sendai | Tohoku | 22 |
| Hiroshima | Chugoku | 82 |
International Mobile Dialing Rules
Japanese mobile numbers typically start with 070, 080, or 090 domestically. When calling from abroad, drop the initial zero.
Drop the Leading Zero
A domestic mobile like 090-1234-5678 becomes international +81 90 1234 5678. The zero is only used for domestic dialing inside Japan.
No Carrier Codes
When calling from the US, you do not need to enter any domestic carrier selection codes used within Japan. Use the international format only.
Call Japan Directly from Your Browser
No Apps Required
StartACall connects your browser to the Japanese PSTN using WebRTC and Twilio. Reach mobile and landline numbers across Japan without installing software.
- Dial any Japanese mobile or landline from Chrome, Safari, or Firefox
- Purchase and manage Japanese virtual numbers
- AI Copilot for real-time call assistance and transcription
- Real-time analytics to track call activity and usage
Transparent
Clear usage tracking and per-call details in real time.
Global Reach
Call any city in Japan and manage Japanese numbers from your dashboard.
Secure
Encrypted calls and enterprise-grade privacy controls.
Instant
Start calling in seconds without configuration overhead.
Frequently Asked Questions
What is the country code for Japan?
The country calling code for Japan is +81. Use it after the US exit code or the plus sign.
Do I need to download an app to call Japan from Honolulu?
No. StartACall runs entirely in your web browser. Log in and start calling from Chrome, Safari, or Firefox.
Can I call both mobile and landline numbers in Japan?
Yes. StartACall supports calling Japanese mobile and fixed-line numbers. Remember to drop the leading zero from area or mobile prefixes.
How do I dial Tokyo from Honolulu?
Dial 011 then 81 then the Tokyo area code without the zero and the local number. Example: +81 3 1234 5678.
Ready to call Japan from Honolulu?
Sign up and start calling in seconds from your browser. No software to install.