Ruler 12 Inch Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Ruler 12 Inch sales on Amazon US totaled 63,800 units in July 2026 (▲ 85.7% vs. the prior month), generating an estimated $369,105 in revenue across the 50 top-ranked ASINs for this search term. Demand is heavily concentrated at the top of the ranking — the ten best performers capture 53.3% of unit volume and 43.0% of revenue, while a typical listing is priced at $6.91. The keyword itself pulled 72,433 Amazon queries over the same period (▲ 116.9% MoM).
Zooming out to the 12-month window ending July 2026, the ruler 12 inch Top 50 moved 515,950 units and $2,853,806 in cumulative sales — an average of 42,996 units and $237,817 per month. Monthly throughput topped out at 133,800 units in August 2025 and dipped to 18,000 in May 2026, leaving the latest reading 52.3% lower than August 2025.
Ruler 12 Inch Sales Trend (Trailing 12 Months)
Based on the top 50 ASINs by monthly sales for this keyword
2025/08
2025/09
2025/10
2025/11
2025/12
2026/01
2026/02
2026/03
2026/04
2026/05
2026/06
2026/07
Monthly Sales 2026/07
63.8K
▲ 85.7% MoM
Monthly Revenue 2026/07
$369.1K
▲ 74.4% MoM
Top 10 Market Share 2026/07
53.3%
Ruler 12 Inch Market Share & Sales Concentration on Amazon US — July 2026
The most-sold ruler 12 inch listing on Amazon US in July 2026 is ASIN B004E3NK92 (Brand: Westcott), which sold 10,000 units at $2.48 apiece — equal to 15.7% of every unit tracked in this report and 25% ahead of the No. 2 listing.
The Top 10 ASINs account for 34,000 units and $158,880 in July 2026 — 53.3% of unit volume and 43.0% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Ruler 12 Inch' on Amazon
July 2026
Is 53.3% Top 10 share highly concentrated?
Ask AI to evaluate competition, market structure, and entry opportunities using ’s tracked Amazon sales, ranking, and keyword data.
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Top 5 Volume Share breakdown
B004E3NK92
Westcott Acrylic Clear Ruler, Easy-to-Read Markings, Scratch-Resistant Design, Raised Beveled Edges, for Crafting, Office, Classroom, Back to School Supplies, 12-Inch
10K
▲ 42.9%vs. prior month
$24.8K
latest month
12-month trend
B09S9X3HV7
Color Clear Ruler Plastic Rulers - Ruler 12 inch, Kids Ruler for School | 7 Pack Transparent Rulers Bulk for Classroom, Back to School Supplies with Centimeters, Millimeter and Inches Assorted Colors
8K
▲ 300.0%vs. prior month
$43.5K
latest month
12-month trend
B07DP25SRG
Mr. Pen- Metal Straight Edge Ruler, 4 pcs, 6", 8", 12", 14" | Stainless Steel Ruler Set, Imperial & Metric Measurements for Drawing, Home, Office, Engineering
3K
▲ 0.0%vs. prior month
$21K
latest month
12-month trend
B09WVT6B5W
Unjoo Clear Plastic Ruler 12 Inch Straight Rulers, for School, Office, 2pcs | Shatterproof Rulers, with Inches and Centimeters, Easy-to-Read Markings, Plastic Drafting Measuring Ruler
2K
▲ 566.7%vs. prior month
$10K
latest month
12-month trend
B09WVW1Z9H
Unjoo Clear Plastic Ruler 6 Inch+12 Inch Straight Ruler, for School, Office | Shatterproof Rulers, with Inches and Centimeters, Easy-to-Read Markings, Plastic Drafting Measuring Ruler
2K
▲ 300.0%vs. prior month
$10K
latest month
12-month trend
B0B3DFZ8B2
ZZTX 3 Pack Wooden Ruler 12 Inch（30 cm) | 2-in-1 scale design, Durable material, Double level design
2K
▲ 100.0%vs. prior month
$12K
latest month
12-month trend
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best Ruler 12 Inch Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Westcott is the best-performing ruler 12 inch brand in July 2026, moving 13,000 units across 3 ASINs for 38.2% of Top 10 volume. DAGONGREN follows with 8,000 units (23.5%), ahead of Unjoo on 4,000 units (11.8%).
With 7 brands splitting the Top 10 and 73.5% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $2.69 to $5.99, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Westcott
3 ASINs in Top 10
38.2%
Units
13K
Revenue
$32.4K
Avg. price
$2.69
B004E3NK92
$2.48·★4.8·9.1K revsWestcott Acrylic Clear Ruler, Easy-to-Read Markings, Scratch-Resistant Design, Raised Beveled Edges, for Crafting, Office, Classroom, Back to School Supplies, 12-Inch
Units sold10KB00E66LFZI
$2.60·★4.6·2.2K revsWestcott Shatterproof Ruler, 12-Inch, Blue, 16010
Units sold2KB00E66LIYQ
$2.99·★4.6·2.2K revsWestcott Shatterproof Ruler, 12-Inch, Green, 16012
Units sold1K
DAGONGREN
1 ASIN in Top 10
23.5%
Units
8K
Revenue
$43.5K
Avg. price
$5.99
B09S9X3HV7
$5.99·★4.7·2.5K revsColor Clear Ruler Plastic Rulers - Ruler 12 inch, Kids Ruler for School | 7 Pack Transparent Rulers Bulk for Classroom, Back to School Supplies with Centimeters, Millimeter and Inches Assorted Colors
Units sold8K
Unjoo
2 ASINs in Top 10
11.8%
Units
4K
Revenue
$20K
Avg. price
$5.99
B09WVT6B5W
$5.99·★4.6·535 revsUnjoo Clear Plastic Ruler 12 Inch Straight Rulers, for School, Office, 2pcs | Shatterproof Rulers, with Inches and Centimeters, Easy-to-Read Markings, Plastic Drafting Measuring Ruler
Units sold2KB09WVW1Z9H
$5.99·★4.6·535 revsUnjoo Clear Plastic Ruler 6 Inch+12 Inch Straight Ruler, for School, Office | Shatterproof Rulers, with Inches and Centimeters, Easy-to-Read Markings, Plastic Drafting Measuring Ruler
Units sold2K
Trending Ruler 12 Inch Products — Growth Leaders & New Top 10 Entrants
Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, 3 ASINs forced its way in: B09WVT6B5W booked 2K units at $5.99, with ▲ 566.7% MoM change.
The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.
B09WVT6B5W
Unjoo Clear Plastic Ruler 12 Inch Straight Rulers, for School, Office, 2pcs | Shatterproof Rulers, with Inches and Centimeters, Easy-to-Read Markings, Plastic Drafting Measuring Ruler
Price
$5.99
Rating
4.6
Reviews
535
Latest month sales
B09WVW1Z9H
Unjoo Clear Plastic Ruler 6 Inch+12 Inch Straight Ruler, for School, Office | Shatterproof Rulers, with Inches and Centimeters, Easy-to-Read Markings, Plastic Drafting Measuring Ruler
Price
$5.99
Rating
4.6
Reviews
535
Latest month sales
B00E66LFZI
Westcott Shatterproof Ruler, 12-Inch, Blue, 16010
Unlock to view ASIN details and product titles
Price
$2.60
Rating
4.6
Reviews
2.2K
Latest month sales
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