---
title: "2 Prong to 3 Prong Outlet Adapter — $1.2M/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/tools-home-improvement/2-prong-to-3-prong-outlet-adapter"
last_updated: "2026-08-07T16:15:37.717Z"
locale: en
meta:
description: "Niche score 55/100 · $1.2M/yr market · 817K searches/yr · $10.36 avg price. Strong incumbent ratings (4.7★) keeps it on the watch list. Data updated Jul 2026."
"og:description": "Niche score 55/100 · $1.2M/yr market · 817K searches/yr · $10.36 avg price. Strong incumbent ratings (4.7★) keeps it on the watch list. Data updated Jul 2026."
"og:title": "2 Prong to 3 Prong Outlet Adapter — $1.2M/yr Amazon US Niche (2026) - Flapen"
---
# **2 prong to 3 prong outlet adapter**
**Worth a look**
Shows searches that convert (14.2% search→purchase), but strong incumbent ratings (4.7★) keeps it on the watch list.
Market size 81Growth 39Conversion 96Competition 39Returns 85Price range 22Avg price 36Brand share 57Review moat 41Quality gap 20
**Conversion**
**Incredible****14.2%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Great****1.5%**
return rate — above 5% kills the launch gate
**Market size**
**Great****$1.2M**
$1.2M/yr · 817K searches
**Brand share**
**Good****71%**
top-5 brand share — brands hold most of the demand
**Review moat**
**Okay****2,429.73**
avg incumbent reviews — the moat a new listing must climb
**Growth**
**Okay****+11.5%**
90-day search growth — must beat 0% to launch
**Competition**
**Okay****62%**
top-5 click share — leaders hold, buyers still browse
**Avg price**
**Okay****$10.36**
avg listing price — sweet spot $15–$100
**Price range**
**Bad****$4.06–$18.12**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Quality gap**
**Bad****4.7★**
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 ~~](https://flapen.com/research/methodology)
## **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.
30K20KHoliday '24Spike '25Prime Day '25Holiday '25Prime Day '26 seasonSepDecMarJunAugNovMarMay
Peak months: Dec · busiest ÷ quietest = 1.8×
[**Open Trend **](https://flapen.com/research/us/tools-home-improvement/2-prong-to-3-prong-outlet-adapter/trend)
## **Top 2 prong to 3 prong outlet adapter search terms**
- **2 prong to 3 prong outlet adapter**205K/yr+6.7%11.3% conv. - **3 prong to 2 prong adapter**139K/yr+13.8%14.3% conv. - **3 prong adapter**84K/yr+10.2%9.2% conv. - **two prong to three prong adapter**66K/yr+23.1%13.5% conv. - **2 to 3 prong outlet adapter**49K/yr+23.1%12.6% conv. - **three prong adapter**45K/yr+16.8%10.4% conv. - **2 prong to 3 prong adapter**29K/yr+28.8%8.7% conv. - **three prong to two prong adapter**23K/yr+14.6%15.3% conv. - **2 prong outlet extender**26K/yr-11.0%3.8% conv. - **3 to 2 prong outlet adapter**22K/yr-1.0%16.0% conv. [**All search terms **](https://flapen.com/research/us/tools-home-improvement/2-prong-to-3-prong-outlet-adapter/search-terms)
## **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.
0%10%$121K20%$241K30%$362K40%$483K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 22 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**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**$7.72**4.7★22,150 rev](https://www.amazon.com/dp/B071FFHQNC) [2**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**$7.09**4.8★2,170 rev](https://www.amazon.com/dp/B0DK339SRZ) [3**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**$16.51**4.7★914 rev](https://www.amazon.com/dp/B0D495DBH8) [4**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**$10.04**4.7★3,320 rev](https://www.amazon.com/dp/B08KXMMMTZ) [5**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**$13.61**4.5★414 rev](https://www.amazon.com/dp/B0D3XK8H2Q)
**~~View all top sellers →~~**
### **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**$10.48**89 rev7mo ago](https://www.amazon.com/dp/B0FWB1Q1MZ) [**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**$14.04**1,561 rev1y ago](https://www.amazon.com/dp/B0F5W5Y6MN) [**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**$4.24**511 rev1y ago](https://www.amazon.com/dp/B0F98S1FFN) [**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**$5.66**383 rev1y ago](https://www.amazon.com/dp/B0F44GL4RG) [**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**$4.06**383 rev1y ago](https://www.amazon.com/dp/B0FFGC2SWH)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**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**$4.24**4.7★**▲ 285%**](https://www.amazon.com/dp/B0F98S1FFN) [**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**$4.06**4.7★**▲ 197%**](https://www.amazon.com/dp/B0FFGC2SWH) [**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**$14.04**4.6★**▲ 154%**](https://www.amazon.com/dp/B0F5W5Y6MN) [**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**$10.48**4.6★**▲ 109%**](https://www.amazon.com/dp/B0FWB1Q1MZ) [**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**$15.75**4.8★**▲ 37%**](https://www.amazon.com/dp/B0DWSVR63L)
**~~View all trending →~~**
## **What buyers say about 2 prong to 3 prong outlet adapter**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Advertised Vs Actual Product**21%
*“Just as described”*
**Quality-Overall**14%
*“Good quality adapters as good as the much more expensive big box hardware stores ones”*
**Socket/Port/Plug**13%
*“The plug is very useful”*
**Value For Money**11%
*“Fair price”*
**Ease Of Use**6%
*“Very handy”*
**Size-Overall**6%
*“They fit snugly”*
**Design-Overall**3%
*“Clever design”*
**Efficiency**3%
*“Works Great”*
**Portability**2%
*“Portable & easy to plug in”*
**Compatibility-Overall**2%
*“compatible with my wall outlets”*
### **What buyers complain about **
**Socket/Port/Plug**19%
*“The plug will not even stay in the outlet”*
**Size-Overall**13%
*“they are al little loose”*
**Functionality-Overall**5%
*“Does not work at all”*
**Advertised Vs Actual Product**5%
*“Not what I expected”*
**Durability**5%
*“Broke right apart”*
**Add-Ons/Attachments**4%
*“Adaptor completely stopped working after a few months”*
**Ease Of Use**4%
*“this could be a big inconvenience”*
**Charging**4%
*“it takes twice as long to charge anything”*
**Connectivity-Overall**4%
*“which makes the connection wobbly”*
**Material Quality**3%
*“Hollow plastic garbage”*
### **Top return reasons **
**Size-Overall**30%
**Socket/Port/Plug**12%
**Compatibility-Overall**11%
**Functionality-Overall**8%
**Advertised Vs Actual Product**8%
**Defective Material/Parts**5%
**Value For Money**5%
**Connectivity-Overall**3%
**Add-Ons/Attachments**3%
**Quality-Overall**2%
## **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.
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