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Updated : October 27, 2025

Japan may be thousands of miles away from US, but calling there doesn’t have to feel that distant. All you need to do is dial a few digits in the right order. In April 2025, Japan welcomed more than 3.9 million visitors from abroad. This reflects how often people stay in touch across borders.

This guide explains how to call Japan from US using landlines and mobile phones.

Step-by-Step: How to Dial Japan from the US?

Making international calls does not have to be confusing. With the right steps, you can easily dial Japan from US. You can use a landline, a cell phone, or start with “+” or 011.

1. Calling a Japanese Landline

ForInstance:

• Start with 011 the US exit code.
• Add 81, Japan’s country code.
• Enter the area code and local number.
• Example: 011 81 3 XXXX XXXX for a Tokyo landline.

2. Calling a Japanese Mobile Number

ForInstance:

• Dial 011 (US exit code).
• Then, 81 for Japan.
• Remove the first zero from the mobile number.
• Example: 011 81 90 1234 5678

3. Using “+” vs 011 for International Dialing

ForInstance:

• Both “+” and 011 work for international calls.
• On mobiles, hold 0 to type “+”.
• Example: +81 3 XXXX XXXX connects the same as 011 81 3 XXXX XXXX.

Most users find it easier to use the “+” symbol on their iPhone or Android phone. It saves them from typing the full exit code every time.

Understanding International Dialing for Japan

For every international call, a simple pattern follows. Once you understand the codes, calling Japan from the US gets easy.

1. What is the US Exit (International) Code?

Whenever you call outside the US, the first set you dial is an exit code. This tells your phone carrier that you are calling another country. In the US, this code is 011. Every international call you make from a U.S. landline or mobile starts with this number.

2. What Is Japan’s Country Code?

After the exit code, you dial Japan’s country code. It is 81. It helps route your call to Japan. It can also be called Japan’s global phone ID. Without it, your call would not go outside the US. This is why many businesses use a Japan virtual phone number. It helps their calls appear local and saves customers from dialing long international codes.

3. Dropping the Leading Zero in Area Codes

Often, in Japan, the area codes begin with a zero. So, you must omit that zero when calling from the USA. For instance, in Japan, Tokyo’s area code is 03, but you would dial 011 81 3 instead. This small adjustment makes sure that your call connects.

4. Format and Length of Local Numbers

Japanese phone numbers have different lengths which are based on the area or type. Usually, landlines have nine digits. And the Mobile numbers have ten or eleven. Always check the number format before calling. This helps you to avoid any errors or incomplete connections.

Japanese Area Codes to Know

Here are some of the key city area codes in Japan you should know before you call.

Cost-Saving Methods & Alternatives

International calling can quickly become costly. But there are plenty of options to keep costs down.

1. Use VoIP or Internet Calling Services

VoIP phone systems have made international calling much easier. Instead of using traditional phone lines, you can make phone calls online with apps like CallHippo, WhatsApp, and Skype.

You only need to have a stable internet connection. Most such services offer clear voice quality and cheaper rates than standard carriers. It is one of the easiest ways to call Japan without worrying about high phone bills. Plus, many providers offer discounted calling rates for frequent users.

Connect Smarter with CallHippo

Start calling Japan without worrying about complex dialing codes or high costs.

2. Leverage International Calling Plans

Many US phone carriers offer special plans for global calling. These plans give you lower rates for specific countries like Japan, Mexico, and Canada.

So, before you make a call, check your provider’s options. Also, verify what is included in your account. Sometimes, adding an international plan costs less than one long-distance call.

3. Use Calling Cards or Prepaid Credits

Calling cards are still a useful way to manage your international calling costs. You pay upfront and know exactly how long you can talk. They work with any phone line, so you can use them while traveling or at home. It is a simple choice for people who prefer control over their spending.

4. Monitor Time Zones to Avoid Extra Charges

Japan is many hours ahead of the US. If you call during the off-peak times, it can lower your per-minute rates. Always check the time in Japan before you call. And remember to avoid late evenings when rates are often higher. This small habit can help you save more over time.

Quick Fact:

• With VoIP services, small businesses can reduce their international calling costs by up to 90%.

Common Mistakes & Troubleshooting

A minor mistake in the number can prevent your call from being connected. Here are some common issues and how to fix them.

1. Forgetting “011” or the “+” Prefix

If you don’t enter the 011 or “+”, your call won’t reach Japan. The network won’t recognize it as an international call. So, always begin with the correct prefix. Double-check before dialing to avoid wasting time on failed attempts.

2. Leaving the Leading “0” in Area Codes

Many Japanese phone numbers start with a zero. But that is only for local use. When you call from the USA, you must drop it. For example, Tokyo’s 03 becomes just 3. Removing that zero is a simple fix that keeps your call from failing.

3. Incorrect Mobile vs Landline Format

Mixing up formats is a common mistake. Usually, the landlines have shorter area codes. But the mobile numbers start with 90, 80, or 70. So, check the number type before dialing. It ensures that the call reaches the right person without any delay.

4. Call Failures Due to Poor Signal or Network Issues

Sometimes, the problem is not the number. It is those weak signals or internet drops that can cut off international calls midway. Try moving to a spot where there is stronger coverage. Else, you can also switch networks. If you are using Wi-Fi calling, ensure that your connection is stable before dialing.

Etiquette & Tips When Calling Japan

Knowing how to dial is important. But how you communicate during the call matters just as much.

1. Best Times to Call (Considering Time Differences)

Japan is ahead of the U.S. by many hours. When it is morning in New York, it is already evening or night in Tokyo. So always check the current time in Japan before you pick up the phone.

Try to call during Japan’s business hours. This is roughly around 9 AM to 6 PM JST. Don’t call in early mornings or late nights just to show respect for their schedule. This is especially important whether you are calling to follow up on business matters or to connect with closed ones.

2. Greetings & Politeness in Japanese Phone Calls

Don’t underestimate the power of a polite greeting. It goes a long way. Start with a simple “Konnichiwa” (hello) or “Ohay? gozaimasu” (good morning) if you know a bit of Japanese.

Japanese phone conversations value respect and clarity. So, speak gently and listen carefully. And before you end the call, remember to thank the person. These small gestures make a big difference.

3. Speaking Clearly & Avoiding Slang or Idioms

Keep your words simple and clear. Avoid using slang, idioms, or speaking too fast.

English expressions like “hit me up” or “what’s up” may confuse native Japanese speakers. Slow down a bit and use common, easy-to-understand words instead. If a phrase seems unclear, replace it with something simpler.

Conclusion

So, the answer to your question – how to call Japan from the United States lies in these simple steps that are given above. Take note of every detail to connect better across the world.

If you want an easier and more affordable way to make international calls, try CallHippo as your reliable partner for global communication. And finally, whether you are planning to visit Japan or simply staying in touch with contacts there, these guidelines will make your calling experience smooth and hassle-free.

FAQs

1. Can I use my US cell phone to call Japan?

Yes, you can. Most US carrier allow international calls to Japan. However, it is better to check your plan first. Some carriers charge extra for overseas calls. But others include Japan in their global calling plans.

2. Is there a free way to call Japan from the US?

Yes, you can call Japan for free using internet-based apps. Services like WhatsApp, Skype, and CallHippo let you make calls through Wi-Fi without extra charges. For business calling, CallHippo offers a free plan that has basic calling features. Also, ensure that both parties have a stable internet connection for the best quality.

Published : October 27, 2025

Anant Berge is a B2B SaaS content writer who creates engaging, user-focused, and SEO-driven content for tech businesses. With a knack for simplifying complex ideas and a passion for storytelling, Anant crafts narratives that help brands connect with their audience through blogs and website content.

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