Skip to content

18 Inch Ruler

Maybe

An estimated 0.5% of orders come back. But the products selling today already average 4.7★, so 18 Inch Ruler is a Maybe.

Flapen Score
52
52 / 100
Top 31% of 9,536 Tools & Home Improvement niches · +4 vs the category median of 48
Market size
$88K/yr83K searches / yr
90-day growth
-2.5%search demand this quarter
Competition
47%top-5 click share · 16 brands · 84 sellers

Flapen Score

18 Inch Ruler against its category

The dotted line is the Tools & Home Improvement average. Past it, 18 Inch Ruler is stronger. Inside it, weaker.

52Maybe
Big MarketTrendingHigh ConversionOpen MarketLow ReturnsPrice rangeAvg priceNo Dominant BrandLow Review BarrierQuality Gap
This niche Category average

Market

The 18 Inch Ruler market on Amazon at a glance

Shoppers on Amazon United States searched for 18 Inch Ruler 83K times last year and spent an estimated $88K. The top 5 brands take 59% of clicks. Demand peaks in Jan–Feb. Flapen scores it 52 out of 100, a Maybe.

01 · Demand

An estimated 9.7% of those searches ended in a purchase.

Shoppers searched for this 83K times in the last 12 months. That counts every search on Amazon United States for this niche's terms. An estimated 9.7% of those searches ended in a purchase. Searches in the last 90 days moved -2.5% against the 90 days before. Searches, conversion and average price together put the market at an estimated $88K a year.

Searches, last 12 months
83K
Growth, 90 days vs prior 90
-2.5%
Conversion, latest week
9.7%
Market size, estimated
$88Ka year
Peak month
January1.9× the quietest month
Top search term
18 inch ruler17K searches a year

02 · Price

A sale here is worth $10.90.

Listings sell for $10.90 on average, from $2.08 to $26.37. Amazon reports units sold in ranges. This niche sold 10K to 13K a year. The average listing sells 250 to 500 of them. At $10.90 that is $3K to $5K a year per listing.

Average price
$10.90under the $15 to $100 sweet spot
Price range
$2.08–$26.37
Amazon United States median price
$24.38across 115,062 niches
Units sold a year
10K–13K
Units per listing a year
250–500
Revenue per listing a year
$3K–$5K
Returns
0.5%of orders · Amazon United States median 2.1%

03 · Entry bar

The bar here is low.

73% of listings pay for placement with sponsored ads. 81% ship with Prime. On an average day, 0.0% of listings are out of stock. The average listing ranks #95 within Measuring & Layout Tools. It carries 1,179 reviews at 4.66 stars, so a new listing needs social proof before a better product.

Sponsored listings
73%
Prime listings
81%
Out of stock, average day
0.0%
Average rank
#95in Measuring & Layout Tools
Average rating
4.66 starsAmazon United States average 4.42 stars
Average reviews
1,179per listing
Listings tracked
26

04 · Newcomers

2 of last year's 3 launches cleared the first-year sales bar.

3 products launched here in the last 12 months. 2 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 64 months on average, so the names here are established.

Launched, last 12 months
3
Successful launches
2Amazon's first-year sales bar
Average brand age
64 months

Products

Top 18 Inch Ruler products & what they sell for

The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.

Prices and ratings read from Amazon on Jul 28, 2026. The live listing can differ.

Competition

Competition: brands, sellers & click share

The top 5 products take an estimated 47% of clicks. Leaders hold, but buyers still shop past them.

$0$4K$7K$11K$14K101001K10K Review Count Sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)

Brands

16 rising

Sellers

84

Est. top-5 brand share

59%

Top 20: 99%

Est. top-5 click share

47%

Top 20: 95%

Open market

33%

  • Pacific Arc16%
  • Psyqtsuary14%
  • ZZTX11%
  • WSICSE10%
  • Johnson8%
  • Sliverdew7%

Demand

18 Inch Ruler search demand

Weekly searches over the year, seasonality beneath. Pick a range.

3K2KSpike '24Spike '25Prime Day '25Spike '26SepDecMarJunAugNovMarMay

Peak months: Jan, Feb · busiest ÷ quietest = 1.9×

Search terms

Top 18 Inch Ruler search terms shoppers use

The exact words shoppers type, with estimated yearly volume, growth, and conversion.

  • 18 inch ruler17K/yr
  • metal ruler 18+ inch17K/yr
  • metal ruler 18 inch14K/yr
  • ruler 18 inch9K/yr
  • 18 ruler9K/yr
  • 18 metal ruler5K/yr
  • 18 inch metal ruler5K/yr
  • stainless steel ruler 18 inch3K/yr
  • steel ruler 18 inch3K/yr

Reviews and returns

What reviews say buyers love and hate about 18 Inch Ruler

We read the reviews and the return reasons for every product selling here.

18%of positive reviews mention “Advertised Vs Actual Product”
11%of negative reviews mention “Measurement/Reading Accuracy”
0.5%of orders come back
“No Metric”
A buyer, on “Measurement/Reading Accuracy”11% of negative reviews mention the same topic

Every topic

Every topic buyers talk about, one row each.

Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.

16 topics

NegativePositive

FAQ

Common 18 Inch Ruler questions

Answered from the same tracked data.

Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data