2 prong to 3 prong outlet adapter
Worth a lookShows searches that convert (14.2% search→purchase), but strong incumbent ratings (4.7★) keeps it on the watch list.
Conversion
Incredible14.2%search→purchase rate — share of searches ending in a sale
Returns
Great1.5%return rate — above 5% kills the launch gate
Market size
Great$1.2M$1.2M/yr · 817K searches
Brand share
Good71%top-5 brand share — brands hold most of the demand
Review moat
Okay2,429.73avg incumbent reviews — the moat a new listing must climb
Growth
Okay+11.5%90-day search growth — must beat 0% to launch
Competition
Okay62%top-5 click share — leaders hold, buyers still browse
Avg price
Okay$10.36avg listing price — sweet spot $15–$100
Price range
Bad$4.06–$18.12cheapest to priciest tracked listing — scored on the share inside $15–$100
Quality gap
Bad4.7★avg incumbent rating — lower means beatable quality
According to Flapen's Amazon United States niche tracking, 2 prong to 3 prong outlet adapter is a $1.2M/yr Amazon United States market (817K searches/yr). The top 5 brands hold 71% of demand. Demand peaks in Dec. Verdict: Worth a look — 55/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
2 prong to 3 prong outlet adapter market data
- Units sold / yr
- 100K–125K
- avg 5,000–6,000/product
- Revenue / yr
- $1.0M–$1.3M
- units × avg price
- Conversion rate
- 14.2%
- Avg BSR
- #97
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 91%
- Out of stock
- 0.0%
- Avg brand age
- 50 months
- Avg seller age
- 176 days
Competition & brand share
The top 5 products take 62% of clicks — established leaders, but buyers still shop beyond them.Brands
14 rising
Sellers
16
Top-5 brand share
71%
Top 20: 100%
Top-5 click share
62%
Top 20: 98%
Open market
20%
- JACKYLED20%
- SerBion19%
- SUPERDANNY11%
- LENCENT10%
- Wrxdmc10%
- VINTAR9%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +11.5% search growth over the last 90 days.Peak months: Dec · busiest ÷ quietest = 1.8×
Top 2 prong to 3 prong outlet adapter search terms
- 2 prong to 3 prong outlet adapter205K/yr
- 3 prong to 2 prong adapter139K/yr
- 3 prong adapter84K/yr
- two prong to three prong adapter66K/yr
- 2 to 3 prong outlet adapter49K/yr
- three prong adapter45K/yr
- 2 prong to 3 prong adapter29K/yr
- three prong to two prong adapter23K/yr
- 2 prong outlet extender26K/yr
- 3 to 2 prong outlet adapter22K/yr
Top 2 prong to 3 prong outlet 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 22 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share
JACKYLED 4 Pack ETL Listed 3-2 Prong Grounding Outlet Adapter 3 Prong to 2 Prong Adapter Converter Portable Fireproof 392 Resistant Heavy Duty Wall Outlet Plug for Household Appliances Industrial
JACKYLED$7.724.7★22,150 rev
Portable 3 Prong to 2 Prong Outlet Adapter Fireproof 392 3-2 Prong Adapter Converter Heavy Duty Wall Plug Adapter for Household Appliances Industrial 1875W Max 4 Packs
SerBion$7.094.8★2,170 rev
2 Prong Power Strip WRXDMC 2 Prong to 3 Prong Outlet Adapter 1400J Two Prong Surge Protector 5ft Extension Cord 8 AC Outlets with 2 USB C Port and 2 USB A Port Wall Mountable Ideal for Old House
Wrxdmc$16.514.7★914 rev
LENCENT 2 Prong to 3 Prong Outlet Adapter Wall Plug Extender Multiple Outlet Wall Plug with 3 AC Outlets Non Grounded Outlets Expander for Japan Travel Kitchen Office Bathroom Older House 2 Pack
LENCENT$10.044.7★3,320 rev
VINTAR 2 Prong to 3 Prong Outlet Adapter 3 Sided 6 Outlet Widely Spaced Extender Polarized Plug Wall Plug Extender 900J Wall Charger Surge Protector Mountable Wall Tap for Non Grounded Outlets
VINTAR$13.614.5★414 rev
Newest
by launch date
2 Prong to 3 Prong Outlet Adapter VINTAR 2 Prong Power Strip with 3 AC Outlets (1875W/15A) Polarized Plug Wall Plug Extender for Non-Grounded Outlet in Old House Cruise Essentials 2 Pack
VINTAR$10.4889 rev
DEPOW 2 Prong to 3 Prong Adapter Power Strip - 6 Outlets & 4 USB Ports (2 USB-C) 1050J Two Prong Surge Protector 5FT Extension Cord Wall Mount - Ideal for Old Houses Non-Grounded Outlets
DEPOW$14.041,561 rev
2 Prong to 3 Prong Outlet Adapter ETL Listed 3-2 Prong Adapter Fire-Retardant (392) PBT Material SUPERDANNY Heavy Duty Wall Plug Adapter for Old Homes Travel to Japan Gray 2-Pack
SUPERDANNY$4.24511 rev
3 Prong to 2 Prong Outlet Adapter 3 Pin to 2 Pin Power Adapter ETL Listed 2 Prong to 3 Prong Wall Outlet Plug Polarized Grounded Outlet Converter for Old Homes Workshops (White 4 Pack)
SUPERDANNY$5.66383 rev
2 Prong to 3 Prong Outlet Adapter SUPERDANNY ETL Listed 3-2 Prong Adapter Fire-Retardant (392) PBT Material Heavy Duty Wall Plug Adapter for Old Homes Travel to Japan (White (2-Pack))
SUPERDANNY$4.06383 rev
Trending
90-day click momentum2 Prong to 3 Prong Outlet Adapter ETL Listed 3-2 Prong Adapter Fire-Retardant (392) PBT Material SUPERDANNY Heavy Duty Wall Plug Adapter for Old Homes Travel to Japan Gray 2-Pack
SUPERDANNY$4.244.7★
2 Prong to 3 Prong Outlet Adapter SUPERDANNY ETL Listed 3-2 Prong Adapter Fire-Retardant (392) PBT Material Heavy Duty Wall Plug Adapter for Old Homes Travel to Japan (White (2-Pack))
SUPERDANNY$4.064.7★
DEPOW 2 Prong to 3 Prong Adapter Power Strip - 6 Outlets & 4 USB Ports (2 USB-C) 1050J Two Prong Surge Protector 5FT Extension Cord Wall Mount - Ideal for Old Houses Non-Grounded Outlets
DEPOW$14.044.6★
2 Prong to 3 Prong Outlet Adapter VINTAR 2 Prong Power Strip with 3 AC Outlets (1875W/15A) Polarized Plug Wall Plug Extender for Non-Grounded Outlet in Old House Cruise Essentials 2 Pack
VINTAR$10.484.6★
HOPOW 2 Prong Power Strip 2 Prong to 3 Prong Outlet Adapter with 12 AC & 4 USB(2 USB-C) 1700J Two Prong Surge Protector 5FT Extension Cord Wall Mountable Ideal for Old House Non-Grounded Outlets
HOPOW$15.754.8★
What buyers say about 2 prong to 3 prong outlet adapter
What buyers praise and complain about, mined from review topics.What buyers love
“Just as described”
“Good quality adapters as good as the much more expensive big box hardware stores ones”
“The plug is very useful”
“Fair price”
“Very handy”
“They fit snugly”
“Clever design”
“Works Great”
“Portable & easy to plug in”
“compatible with my wall outlets”
What buyers complain about
“The plug will not even stay in the outlet”
“they are al little loose”
“Does not work at all”
“Not what I expected”
“Broke right apart”
“Adaptor completely stopped working after a few months”
“this could be a big inconvenience”
“it takes twice as long to charge anything”
“which makes the connection wobbly”
“Hollow plastic garbage”
Top return reasons
Common questions
- Is 2 prong to 3 prong outlet adapter profitable to sell on Amazon United States?
- The niche generates $1.2M/yr across 22 tracked products. 1 of 1 products launched in the last 360 days are still selling. 90-day search growth is +11.5%. Flapen's verdict: Worth a look (55/100).
- How competitive is the 2 prong to 3 prong outlet adapter niche?
- 14 brands and 16 sellers compete. The top 5 products take 62% of clicks and top 5 brands hold 71% of demand.
- What do buyers complain about in 2 prong to 3 prong outlet adapter?
- Top complaints mined from reviews: Socket/Port/Plug, Size-Overall, Functionality-Overall. The return rate is 1.5%.
- When does demand for 2 prong to 3 prong outlet adapter peak?
- Demand peaks in Dec; the busiest month runs 1.8× the quietest.
- What does it cost to enter the 2 prong to 3 prong outlet adapter niche?
- Listings span $4.06–$18.12; the average listing price is $10.36 (sweet spot $15–$100). The average incumbent carries 2,430 reviews — the moat a new listing must climb.