japan voltage converter
Skip itA small market ($43K/yr) — this niche doesn't clear our bar today.
Avg price
Incredible$35.58avg listing price — sweet spot $15–$100
Price range
Great$9.60–$89.90cheapest to priciest tracked listing — scored on the share inside $15–$100
Brand share
Good69%top-5 brand share — brands hold most of the demand
Competition
Good53%top-5 click share — leaders hold, buyers still browse
Quality gap
Good4.4★avg incumbent rating — lower means beatable quality
Conversion
Okay3.5%search→purchase rate — share of searches ending in a sale
Review moat
Okay2,190.5avg incumbent reviews — the moat a new listing must climb
Returns
Okay4.9%return rate — above 5% kills the launch gate
Market size
Bad$43K$43K/yr · 34K searches
Growth
Bad-28.5%90-day search growth — must beat 0% to launch
According to Flapen's Amazon United States niche tracking, japan voltage converter is a $43K/yr Amazon United States market (34K searches/yr). The top 5 brands hold 69% of demand. Verdict: Skip it — 41/100.
Data updated Jul 22, 2026 · scored weekly · How we score niches
japan voltage converter market data
- Units sold / yr
- 1K–1K
- avg 0–100/product
- Revenue / yr
- $36K–$44K
- units × avg price
- Conversion rate
- 3.5%
- Avg BSR
- #120
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 100%
- Out of stock
- 9.9%
- Avg brand age
- 48 months
- Avg seller age
- 178 days
Competition & brand share
The top 5 products take 53% of clicks — established leaders, but buyers still shop beyond them.Brands
15 rising
Sellers
26
Top-5 brand share
69%
Top 20: 100%
Top-5 click share
53%
Top 20: 97%
Open market
25%
- TESSAN19%
- HANYCONY16%
- VINTAR14%
- UMI10%
- Yinleader9%
- Ceptics6%
Demand & seasonality
Weekly Amazon search volume, last 67 weeks — -28.5% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.8×
Top japan voltage converter search terms
- japan voltage converter14K/yr
- voltage converter us to japan10K/yr
- us to japan voltage converter7K/yr
- japan to us voltage converter3K/yr
Top japan voltage converter 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 24 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
120V to 100V Voltage Converter 500watts Step Down toroidal Voltage Converter for Japan appliances Used in USCE CQC Certified
UMI$68.014.6★236 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
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
Newest
by launch date
SARQW Travel Converter Adapter Voltage Converter that Steps Down 220 Volts to 110 Volts for use in Over 200 Countries Including The U.S. U.K. Europe and Australia
SARQW$29.4535 rev
1500W US 120V to 100V JP Japan Voltage Converter Step Down Transformer
Yinleader$87.476 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
500W US to Japan Voltage Converter 120V to 100V Step Down Transformer
Yinleader$47.6391 rev
Trending
90-day click momentumSARQW Travel Converter Adapter Voltage Converter that Steps Down 220 Volts to 110 Volts for use in Over 200 Countries Including The U.S. U.K. Europe and Australia
SARQW$29.452.8★
1500W US 120V to 100V JP Japan Voltage Converter Step Down Transformer
Yinleader$87.474.3★
BESTEK 250W Power Converter 3-Outlet and 4-Port USB Travel Voltage Transformer 220V to 110V with Type G/D/M/AU/US Travel Plug Adapters
BESTEK$33.024.4★
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 japan voltage converter
What buyers praise and complain about, mined from review topics.What buyers love
“Solid quality”
“Easy to carry and works well”
“Fantastic charger”
“As advertised”
“Easy to use”
“is a GREAT power plug adapter”
“Worth the money”
“Was very compatible”
“Works great”
“Good design”
What buyers complain about
“Didnt Work as Expected”
“It barely worked for charging my phone”
“stopped working all together”
“Felt cheap”
“started to make strange sounds”
“Not as expected”
“I dont think this was compatible with my devices”
“I also found it a bit bulky”
“Maybe the socket was developed tight for safety concerns”
“the fuse is super loose which worries me”
Top return reasons
Common questions
- Is japan voltage converter profitable to sell on Amazon United States?
- The niche generates $43K/yr across 24 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is -28.5%. Flapen's verdict: Skip it (41/100).
- How competitive is the japan voltage converter niche?
- 15 brands and 26 sellers compete. The top 5 products take 53% of clicks and top 5 brands hold 69% of demand.
- What do buyers complain about in japan voltage converter?
- Top complaints mined from reviews: Functionality-Overall, Charging, Durability. The return rate is 4.9%.
- When does demand for japan voltage converter peak?
- Demand is steady year-round — the busiest month runs 1.8× the quietest.
- What does it cost to enter the japan voltage converter niche?
- Listings span $9.60–$89.90; the average listing price is $35.58 (sweet spot $15–$100). The average incumbent carries 2,191 reviews — the moat a new listing must climb.