---
title: "Us to Japan Plug Adapter — $348K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/electronics/us-to-japan-plug-adapter"
last_updated: "2026-08-11T09:06:28.531Z"
locale: en
meta:
description: "Niche score 45/100 · $348K/yr market · 271K searches/yr · $17.40 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 45/100 · $348K/yr market · 271K searches/yr · $17.40 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Us to Japan Plug Adapter — $348K/yr Amazon US Niche (2026) - Flapen"
---
# **us to japan plug adapter**
**Skip it**
Soft demand (-17.7% this quarter) — this niche doesn't clear our bar today.
Market size 53Growth 16Conversion 77Competition 29Returns 73Price range 69Avg price 81Brand share 26Review moat 52Quality gap 24
**Avg price**
**Great****$17.40**
avg listing price — sweet spot $15–$100
**Conversion**
**Great****7.4%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Good****2.1%**
return rate — above 5% kills the launch gate
**Price range**
**Good****$6.80–$33.08**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Market size**
**Good****$348K**
$348K/yr · 271K searches
**Review moat**
**Good****1,427.56**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Okay****68%**
top-5 click share — leaders hold, buyers still browse
**Brand share**
**Okay****90%**
top-5 brand share — brands hold most of the demand
**Quality gap**
**Bad****4.6★**
avg incumbent rating — lower means beatable quality
**Growth**
**Bad****-17.7%**
90-day search growth — must beat 0% to launch
**Signals**[** Low Review Barrier**](https://flapen.com/research/niches?market=us&signal=low_review_barrier "Top brand's reviews < 500")
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 ~~](https://flapen.com/research/methodology)
## **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.
7K5KSpike '24Spike '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Mar · busiest ÷ quietest = 1.8×
[**Open Trend **](https://flapen.com/research/us/electronics/us-to-japan-plug-adapter/trend)
## **Top us to japan plug adapter search terms**
- **us to japan plug adapter**44K/yr-4.8%9.3% conv. - **japan outlet adapter**34K/yr-11.3%9.1% conv. - **japan adapter plug**19K/yr-24.6%9.8% conv. - **japan power adapter**20K/yr-22.8%8.0% conv. - **japan plug adapter**19K/yr-21.2%8.1% conv. - **japan adapter**9K/yr+44.1%7.5% conv. - **japan travel adapter**16K/yr-41.0%7.4% conv. - **japan voltage converter**14K/yr-27.5%2.1% conv. - **japan charger adapter**8K/yr-8.2%8.3% conv. - **type a plug adapter**10K/yr-38.0%7.1% conv. [**All search terms **](https://flapen.com/research/us/electronics/us-to-japan-plug-adapter/search-terms)
## **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.
0%10%$35K20%$70K30%$105K40%$139K101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 16 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**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**$26.84**4.5★101 rev](https://www.amazon.com/dp/B0DQSHLQ2N) [2**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**$9.60**4.6★352 rev](https://www.amazon.com/dp/B0CXD881LN) [3**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**$14.80**4.7★1,066 rev](https://www.amazon.com/dp/B0D1B6NLBX) [4**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**$26.11**4.7★168 rev](https://www.amazon.com/dp/B0CR1QGD3W) [5**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**$25.47**4.7★52 rev](https://www.amazon.com/dp/B0CQJGG4WY)
**~~View all top sellers →~~**
### **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**$22.54**3,439 rev1y ago](https://www.amazon.com/dp/B0DHVNW1CN) [**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**$26.84**101 rev1y ago](https://www.amazon.com/dp/B0DQSHLQ2N) [**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**$24.85**55 rev1y ago](https://www.amazon.com/dp/B0DLP3XYZ5) [**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**$7.40**28 rev1y ago](https://www.amazon.com/dp/B0DP43T8XN) [**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**$6.80**89 rev1y ago](https://www.amazon.com/dp/B0DL9V639Q)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**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**$7.40**4.7★**▲ 69%**](https://www.amazon.com/dp/B0DP43T8XN) [**US to Japan Adapter 2 Prong Extension Cord 3 FT with Flat Plug 15A**kakahigh**$16.59**4.6★**▲ 59%**](https://www.amazon.com/dp/B0CDH8PKGJ) [**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**$25.47**4.7★**▲ 33%**](https://www.amazon.com/dp/B0CQJGG4WY) [**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**$13.95**4.6★**▲ 31%**](https://www.amazon.com/dp/B0CPLTMNWB) [**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**$33.08**4.5★**▲ 27%**](https://www.amazon.com/dp/B06XSJ14CX)
**~~View all trending →~~**
## **What buyers say about us to japan plug adapter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Portability**18%
*“Easy to carry and works well”*
**Charging**15%
*“Awesome charger”*
**Quality-Overall**10%
*“Excellent product”*
**Compactness**7%
*“More compact”*
**Advertised Vs Actual Product**7%
*“As advertised”*
**Socket/Port/Plug**6%
*“USB ports great”*
**Ease Of Use**6%
*“Easy to use”*
**Compatibility-Overall**4%
*“Was very compatible”*
**Value For Money**3%
*“Good product at a very reasonable price”*
**Size-Overall**3%
*“Good size”*
### **What buyers complain about **
**Charging**17%
*“They just don't charge”*
**Durability**10%
*“Broke after 2 uses”*
**Socket/Port/Plug**9%
*“Only half the ports work”*
**Quality-Overall**8%
*“Quality is horrible”*
**Size-Overall**7%
*“Fit Can Be Hit or Miss”*
**Portability**5%
*“This is a mess for someone who travels a lot”*
**Compatibility-Overall**4%
*“Not good for the UK”*
**Functionality-Overall**4%
*“Doesn't work”*
**Advertised Vs Actual Product**4%
*“Deceptive Photo - this does NOT include a hard case”*
**Connectivity-Overall**3%
*“it loses connectivity”*
### **Top return reasons **
**Compatibility-Overall**24%
**Value For Money**14%
**Size-Overall**11%
**Socket/Port/Plug**10%
**Charging**9%
**Functionality-Overall**9%
**Advertised Vs Actual Product**7%
**Defective Material/Parts**4%
**Connectivity-Overall**3%
**Weight Heavy**2%
## **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.
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