βINPUTβ is printed on the label of the charger, AC adapter or the product itself. Plug drawings show the general shape only.
This is for traveling from Japan to the United States. The data is the IEC list (as of June 2025). Some places or buildings may use other types, so treat it as a guide.
| Voltage | Frequency | Plug types | |
|---|---|---|---|
| United States | 120V | 60Hz | A, B |
| Japan (for comparison) | 100V | 50 / 60Hz | A, B |
Same as Japan: The United States uses types A, B, the same types as Japan (A, B) in the IEC list.
Source: IEC (International Electrotechnical Commission) World Plugs country list (as of June 2025). The IEC no longer publishes this list, so a copy is kept on this site (retrieved 2026-09-27)
PR Example USB charger for overseas voltages (Japanese online stores)
Same plug types as Japan: a charger rated 100-240V is all you need
input 100-240V, 4 USB-A ports, labeled "PSE certified". Depending on your destination, a plug adapter is needed separately.
input AC100-240V, 3 USB-A ports, labeled "PSE certified". Depending on your destination, a plug adapter is needed separately.
PR π Get ready for United States (Japanese online store)
Fresh angles on classics like the Statue of Liberty and Niagara Falls. Itineraries for long trips, day trips and walks, from New York to California, Alaska and Hawaii.
Lonely Planet USA (13th edition, 2026-2027) (Kindle edition) (Amazon.co.jp) Β· About Kindle guidebooks
| "INPUT" on the product | Result |
|---|---|
| INPUT 100-240V | Voltage: The United States uses 120V. Within the label (100β240V) β no transformer needed |
| INPUT 100V only | Voltage: The United States uses 120V. Outside the label (100V) β do not use it as is. Use a product that supports the voltage in the United States, or use a transformer (check the transformer's manual for which products and wattage it supports) |
Check the "INPUT" label on the charger, AC adapter or the product itself. For hair dryers and irons, see Taking a hair dryer or hair iron abroad; for plug shapes, see How to tell plug types A to N apart.
Source: IEC (International Electrotechnical Commission) World Plugs country list (as of June 2025). The IEC no longer publishes this list, so a copy is kept on this site (retrieved 2026-09-27)
Apart from what you can take on the plane, the United States has its own rules for what you bring in when you arrive. Only the points most relevant to travelers are listed here.
Tap an item to see the rule.
Meat and meat products (including products with meat as an ingredient)
Many fresh, dried and some canned meats and meat byproducts are prohibited because of foot-and-mouth disease, BSE and other animal diseases. Products that contain meat from restricted countries as an ingredient (such as beef broth) are usually prohibited too
Fruit, vegetables, plants, seeds, soil, etc.
Declare all meats, fruits, vegetables, plants, seeds, soil, animals, and plant and animal products (including soups). Depending on the country of origin, some fruits, vegetables and plants may be brought in if declared, inspected and found free of pests
If you do not declare
Undeclared prohibited agricultural items are confiscated and disposed of. Failure to declare prohibited agricultural products can lead to a civil penalty of up to $1,000 even for a first offense (non-commercial quantities)
Alcohol
Aged 21 or over: generally 1 liter duty-free. Duty and federal excise tax apply to more than that. Travelers under 21 cannot bring in alcohol (even as a gift). Some states have stricter rules
Items you will leave in the U.S. (souvenirs, gifts, etc.)
Visitors (non-residents) are normally entitled to an exemption of $100. Declare the value of all articles that will remain in the United States
Cash, etc.
If you bring in or take out more than $10,000 in total (or the foreign equivalent) in currency or monetary instruments, you must file a FinCEN 105 report. Families or groups count the total they carry together. Not reporting can lead to seizure of all of it, civil penalties or criminal prosecution
Controlled substances, obscene articles, toxic substances
Generally prohibited. Bringing in items that infringe intellectual property rights (such as counterfeit brand goods) may lead to civil or criminal penalties
We have not listed duty-free amounts of tobacco (including e-cigarettes) for visitors, because the CBP pages we could check only explain them for U.S. residents. Rules can change, so check the latest information from CBP before you go.
For the duty-free allowance when you return to Japan, see Duty-free allowance when returning to Japan.
Sources (4)
Source: U.S. Customs and Border Protection (CBP): "Bringing Agricultural Products Into the United States" (last modified June 11, 2026) (retrieved 2026-09-28)
Source: CBP: "Bringing alcohol (including homemade wine) into the United States for personal use" (published February 14, 2026) (retrieved 2026-09-28)
Source: CBP Customs Declaration (CBP Form 6059B), instructions on the back (July 2024 edition) (retrieved 2026-09-28)
Source: CBP: "Money and Other Monetary Instruments" (last modified November 24, 2025) (retrieved 2026-09-28)
Handy to have before you go
PR Example travel bottles (Japanese online stores)
For liquids in the cabin on international flights: containers of 100ml or less
capacity 60ml, 1 bottle, polyethylene and polypropylene.
a set of 5 bottles; choose from 30ml, 50ml or 100ml.