4 foot extension cord
Worth a lookShows searches that convert (11.9% search→purchase), but strong incumbent ratings (4.8★) keeps it on the watch list.
Conversion
Great11.9%search→purchase rate — share of searches ending in a sale
Returns
Great1.7%return rate — above 5% kills the launch gate
Brand share
Good64%top-5 brand share — brands hold most of the demand
Competition
Good48%top-5 click share — leaders hold, buyers still browse
Growth
Okay+16.5%90-day search growth — must beat 0% to launch
Market size
Okay$228K$228K/yr · 193K searches
Avg price
Okay$9.86avg listing price — sweet spot $15–$100
Review moat
Bad7,936.53avg incumbent reviews — the moat a new listing must climb
Quality gap
Bad4.8★avg incumbent rating — lower means beatable quality
Price range
Bad$4.45–$16.75cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, 4 foot extension cord is a $228K/yr Amazon United States market (193K searches/yr). The top 5 brands hold 64% of demand. Demand peaks in Nov–Dec. Verdict: Worth a look — 52/100.
Data updated Jul 27, 2026 · scored weekly · How we score niches
4 foot extension cord market data
- Units sold / yr
- 25K–30K
- avg 750–1,000/product
- Revenue / yr
- $247K–$296K
- units × avg price
- Conversion rate
- 11.9%
- Avg BSR
- #287
- Page quality
- 0%
- Prime
- 100%
- Sponsored
- 83%
- Out of stock
- 4.1%
- Avg brand age
- 51 months
- Avg seller age
- 194 days
Competition & brand share
The top 5 products take 48% of clicks — established leaders, but buyers still shop beyond them.Brands
17 rising
Sellers
42
Top-5 brand share
64%
Top 20: 100%
Top-5 click share
48%
Top 20: 91%
Open market
28%
- huanchain18%
- Skrizcable17%
- Amazon Basics10%
- Maximm9%
- Vockjour9%
- Seeklyze8%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — +16.5% search growth over the last 90 days.Peak months: Nov, Dec · busiest ÷ quietest = 2.1×
Top 4 foot extension cord search terms
- 4ft extension cord34K/yr
- 4 foot extension cord29K/yr
- 4 ft extension cord30K/yr
- short extension cord 4 foot20K/yr
- 4 extension cord16K/yr
- extension cord 4ft14K/yr
- 4ft outdoor extension cord7K/yr
- 4ft black extension cord5K/yr
- 4 foot extension cord 3 prong5K/yr
- 4 foot outdoor extension cord4K/yr
Top 4 foot extension cord 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
16/3 Short Extension Cord 4 FT Black Extension Cord Flexible & Durable Indoor 3 Prong Power Cable Suitable for Home and Office 13 Amp 1625 Watt 125VAC 16AWG ETL Listed
Skrizcable$7.184.8★1,020 rev
HUANCHAIN 4 FT 16 Gauge Black Indoor Outdoor Extension Cord Waterproof Flexible Cold Weather 3 Prong Electric Cord Outside 13A 1625W 125V 16AWG SJTW ETL Listed
huanchain$7.974.8★221 rev
16/3 Black Indoor Outdoor Extension Cord 4 Ft Waterproof Extension Cord with 3 Prong Grounded Plug 13A 1625W 16AWG SJTW Flexible Weatherproof Power Cable
Vockjour$8.354.8★4,399 rev
Amazon Basics Extension Cord 3 Prong Outlet Extender Indoor Power Cord 13 Amps 125V 6 Ft Black
Amazon Basics$6.664.8★61,533 rev
Cruise Essentials - Flat Plug Power Strip Addtam 5 ft Ultra Flat Extension Cord with 6 Outlets Extender No Surge Protector for Cruise Ship Travel Dorm Home Office ETL Listed
Addtam$8.624.8★7,839 rev
Newest
by launch date
16/3 Short Extension Cord 4 FT White Extension Cord Flexible & Durable Indoor 3 Prong Power Cable Suitable for Home and Office 13 Amp 1625 Watt 125VAC 16AWG ETL Listed
Skrizcable$8.961,020 rev
16/3 Black Indoor Outdoor Extension Cord 4 Ft Waterproof Extension Cord with 3 Prong Grounded Plug 13A 1625W 16AWG SJTW Flexible Weatherproof Power Cable
Vockjour$8.354,399 rev
16/3 Short Extension Cord 4 FT Black Extension Cord Flexible & Durable Indoor 3 Prong Power Cable Suitable for Home and Office 13 Amp 1625 Watt 125VAC 16AWG ETL Listed
Skrizcable$7.181,020 rev
16/3 Black Extension Cord 6 FT Indoor Short Extension Cord for Laptops Coffee Makers Office Home Appliances 3 Prong Small Resistant Cable Flexible 13A 125V 1625W ETL Listed
Seeklyze$6.235,386 rev
16/3 3FT 13A 125V 1625W Black Indoor Extension Cord Short Extension Cord for Laptops Coffee Makers Office Home Appliances 3 Prong Small Resistant Cable Flexible ETL Listed
Seeklyze$5.535,386 rev
Trending
90-day click momentum16/3 Short Extension Cord 4 FT White Extension Cord Flexible & Durable Indoor 3 Prong Power Cable Suitable for Home and Office 13 Amp 1625 Watt 125VAC 16AWG ETL Listed
Skrizcable$8.964.8★
16/3 Black Extension Cord 6 FT Indoor Short Extension Cord for Laptops Coffee Makers Office Home Appliances 3 Prong Small Resistant Cable Flexible 13A 125V 1625W ETL Listed
Seeklyze$6.234.8★
16/3 Short Extension Cord 4 FT Black Extension Cord Flexible & Durable Indoor 3 Prong Power Cable Suitable for Home and Office 13 Amp 1625 Watt 125VAC 16AWG ETL Listed
Skrizcable$7.184.8★
Amazon Basics Extension Cord 3 Prong Outlet Extender Indoor Power Cord 13 Amps 125V 6 Ft Black
Amazon Basics$6.664.8★
16/3 Black Indoor Outdoor Extension Cord 4 Ft Waterproof Extension Cord with 3 Prong Grounded Plug 13A 1625W 16AWG SJTW Flexible Weatherproof Power Cable
Vockjour$8.354.8★
What buyers say about 4 foot extension cord
What buyers praise and complain about, mined from review topics.What buyers love
“The build quality is outstanding”
“As advertised”
“Great value”
“smart plugs are so easy”
“Fits perfectly”
“The actual charger is great”
“Cute case and attachments”
“Easy to use”
“Terrific power strip”
“It's durable”
What buyers complain about
“It broke after one use”
“Cant fully fit plugs”
“Doesn't fit”
“Bad quality”
“Short extension”
“Didnt work”
“1st purchase, the usb and c charger did not work”
“Cheap price”
“It has a constant hum all the time”
“it's a bit bulky”
Top return reasons
Common questions
- Is 4 foot extension cord profitable to sell on Amazon United States?
- The niche generates $228K/yr across 30 tracked products. 1 of 2 products launched in the last 360 days are still selling. 90-day search growth is +16.5%. Flapen's verdict: Worth a look (52/100).
- How competitive is the 4 foot extension cord niche?
- 17 brands and 42 sellers compete. The top 5 products take 48% of clicks and top 5 brands hold 64% of demand.
- What do buyers complain about in 4 foot extension cord?
- Top complaints mined from reviews: Durability, Socket/Port/Plug, Size-Overall. The return rate is 1.7%.
- When does demand for 4 foot extension cord peak?
- Demand peaks in Nov–Dec; the busiest month runs 2.1× the quietest.
- What does it cost to enter the 4 foot extension cord niche?
- Listings span $4.45–$16.75; the average listing price is $9.86 (sweet spot $15–$100). The average incumbent carries 7,937 reviews — the moat a new listing must climb.