us to japan plug adapter
Skip itSoft demand (-17.7% this quarter) — this niche doesn't clear our bar today.
Avg price
Great$17.40avg listing price — sweet spot $15–$100
Conversion
Great7.4%search→purchase rate — share of searches ending in a sale
Returns
Good2.1%return rate — above 5% kills the launch gate
Price range
Good$6.80–$33.08cheapest to priciest tracked listing — scored on the share inside $15–$100
Market size
Good$348K$348K/yr · 271K searches
Review moat
Good1,427.56avg incumbent reviews — the moat a new listing must climb
Competition
Okay68%top-5 click share — leaders hold, buyers still browse
Brand share
Okay90%top-5 brand share — brands hold most of the demand
Quality gap
Bad4.6★avg incumbent rating — lower means beatable quality
Growth
Bad-17.7%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, us to japan plug adapter is a $348K/yr Amazon United States market (271K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in Mar. Verdict: Skip it — 45/100.
Data updated Jul 22, 2026 · scored weekly · How we score niches
us to japan plug adapter market data
- Units sold / yr
- 25K–30K
- avg 1,000–1,250/product
- Revenue / yr
- $435K–$522K
- units × avg price
- Conversion rate
- 7.4%
- Avg BSR
- #56
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 8.0%
- Avg brand age
- 45 months
- Avg seller age
- 179 days
Competition & brand share
The top 5 products take 68% of clicks — established leaders, but buyers still shop beyond them.Brands
9 rising
Sellers
19
Top-5 brand share
90%
Top 20: 100%
Top-5 click share
68%
Top 20: 100%
Open market
6%
- TESSAN36%
- HANYCONY35%
- VINTAR7%
- Ceptics7%
- Anker5%
- One Beat4%
- Open — no brand owns it (3 brands, 6%)
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -17.7% search growth over the last 90 days.Peak months: Mar · busiest ÷ quietest = 1.8×
Top us to japan plug adapter search terms
- us to japan plug adapter44K/yr
- japan outlet adapter34K/yr
- japan adapter plug19K/yr
- japan power adapter20K/yr
- japan plug adapter19K/yr
- japan adapter9K/yr
- japan travel adapter16K/yr
- japan voltage converter14K/yr
- japan charger adapter8K/yr
- type a plug adapter10K/yr
Top us to japan plug adapter products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 16 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
TESSAN 2 Prong to 3 Prong Outlet Adapter 2 Pack US to Japan Plug Adapter with 4 Outlets 3 USB (1 USB C PD 20W) Outlet Adaptor US to Japan China Mexico Philippines Canada Peru Thailand Vietnam
TESSAN$26.844.5★101 rev
HANYCONY US to Japan Plug Adapter Japan Power Travel Adpter with 2 Outlets 3 USB Ports(2 USB C) Type A Plug Adapter for Amercian USA to Japanese China Canada Mexico Philippines Peru
HANYCONY$9.604.6★352 rev
2 Pack US to Japan Travel Plug Adapter HANYCONY Japan Power Adpter with 4 Outlets 4 USB Ports(2 USB C) Type A Plug Adapter for Amercian USA to Japanese China Canada Mexico Philippines Peru
HANYCONY$14.804.7★1,066 rev
2 Pack US to Japan Plug Adapter VINTAR Foldable Japan Travel Adapter with 2 Outlets and 3 USB Ports(2 USB C) 2 Prong to 3 Prong Outlet Adapter for USA to Japan China Canada Philippine Type A
VINTAR$26.114.7★168 rev
TESSAN US to Japan Plug Adapter PD 20W 2 Pack 2 Prong to 3 Prong Outlet Adapter with 4 Outlets and 3 USB (2 USB-C) Power Adaptor US to Japan China Mexico Philippines Canada Peru Thailand Vietnam
TESSAN$25.474.7★52 rev
Newest
by launch date
Anker Nano Travel Adapter 5-Port Power Adapter with 1 2-Pin AC 2 USB A 2 USB C for 20W Smart Temperature Control Works in 200+ Countries Not a Voltage Converter Travel Essentials (1-Pack)
Anker$22.543,439 rev
TESSAN 2 Prong to 3 Prong Outlet Adapter 2 Pack US to Japan Plug Adapter with 4 Outlets 3 USB (1 USB C PD 20W) Outlet Adaptor US to Japan China Mexico Philippines Canada Peru Thailand Vietnam
TESSAN$26.84101 rev
2 Pack US to Japan Plug Adapter VINTAR Foldable Japan Power Adapter with 4 Outlets and 3 USB Ports(2 USB C) 2 Prong to 3 Prong Outlet Adapter for USA to Japan China Canada Philippine Type A
VINTAR$24.8555 rev
2 Pack US to Japan Plug Adapter Japan Power Travel Adpter with 3 Outlets 3 USB Ports(2 USB C) Type A Travel Power Converter Plug Adaptor for USA to Japanese China Canada Mexico Philippines Peru
Addtam$7.4028 rev
US to Japan Plug Adapter Japan Power Travel Adpter with 4 Outlets 4 USB Ports(2 USB C) Type A Plug Adapter for Amercian USA to Japanese China Canada Mexico Philippines Peru Travel Essentials
HANYCONY$6.8089 rev
Trending
90-day click momentum2 Pack US to Japan Plug Adapter Japan Power Travel Adpter with 3 Outlets 3 USB Ports(2 USB C) Type A Travel Power Converter Plug Adaptor for USA to Japanese China Canada Mexico Philippines Peru
Addtam$7.404.7★
US to Japan Adapter 2 Prong Extension Cord 3 FT with Flat Plug 15A
kakahigh$16.594.6★
TESSAN US to Japan Plug Adapter PD 20W 2 Pack 2 Prong to 3 Prong Outlet Adapter with 4 Outlets and 3 USB (2 USB-C) Power Adaptor US to Japan China Mexico Philippines Canada Peru Thailand Vietnam
TESSAN$25.474.7★
LENCENT US to Japan Plug Adapter 2 Prong to 3 Prong Outlet Adapter with 4 Outlets 4 USB Ports(2 USB C) Type A Travel Converter for US to Japan Canada Mexico China Philippines Peru
LENCENT$13.954.6★
Ceptics 35W Universal Travel Adapter Kit 2 USA sockets USB-A USBC 1x PD 35W USB-C and USBC Cable Surge Protected Plugs for EU UK China AU Japan - for Laptop Phone Camera-ETL Tested
Ceptics$33.084.5★
What buyers say about us to japan plug adapter
What buyers praise and complain about, mined from review topics.What buyers love
“Easy to carry and works well”
“Awesome charger”
“Excellent product”
“More compact”
“As advertised”
“USB ports great”
“Easy to use”
“Was very compatible”
“Good product at a very reasonable price”
“Good size”
What buyers complain about
“They just don't charge”
“Broke after 2 uses”
“Only half the ports work”
“Quality is horrible”
“Fit Can Be Hit or Miss”
“This is a mess for someone who travels a lot”
“Not good for the UK”
“Doesn't work”
“Deceptive Photo - this does NOT include a hard case”
“it loses connectivity”
Top return reasons
Common questions
- Is us to japan plug adapter profitable to sell on Amazon United States?
- The niche generates $348K/yr across 16 tracked products. 90-day search growth is -17.7%. Flapen's verdict: Skip it (45/100).
- How competitive is the us to japan plug adapter niche?
- 9 brands and 19 sellers compete. The top 5 products take 68% of clicks and top 5 brands hold 90% of demand.
- What do buyers complain about in us to japan plug adapter?
- Top complaints mined from reviews: Charging, Durability, Socket/Port/Plug. The return rate is 2.1%.
- When does demand for us to japan plug adapter peak?
- Demand peaks in Mar; the busiest month runs 1.8× the quietest.
- What does it cost to enter the us to japan plug adapter niche?
- Listings span $6.80–$33.08; the average listing price is $17.40 (sweet spot $15–$100). The average incumbent carries 1,428 reviews — the moat a new listing must climb.