Ruler Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Ruler sales on Amazon US totaled 92,600 units in July 2026 (▲ 37.1% vs. the prior month), generating an estimated $484,712 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 59.4% of unit volume and 51.9% of revenue, while a typical listing is priced at $6.25. The keyword itself pulled 353,796 Amazon queries over the same period (▲ 221.5% MoM).
Zooming out to the 12-month window ending July 2026, the ruler Top 50 moved 918,600 units and $4,640,914 in cumulative sales — an average of 76,550 units and $386,743 per month. Monthly throughput topped out at 187,300 units in August 2025 and dipped to 34,300 in May 2026, leaving the latest reading 50.6% lower than August 2025.
Ruler 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
92.6K
▲ 37.1% MoM
Monthly Revenue 2026/07
$484.7K
▲ 39.2% MoM
Top 10 Market Share 2026/07
59.4%
Ruler Market Share & Sales Concentration on Amazon US — July 2026
The most-sold ruler listing on Amazon US in July 2026 is ASIN B004E3NK92 (Brand: Westcott), which sold 10,000 units at $2.48 apiece — equal to 10.8% of every unit tracked in this report.
The Top 10 ASINs account for 55,000 units and $251,620 in July 2026 — 59.4% of unit volume and 51.9% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Ruler' on Amazon
July 2026
Is 59.4% 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
B07MT89MCW
GDMINLO Soft Tape Measure Double Scale Body Sewing Flexible Tailor Craft Vinyl Ruler for Weight Loss Medical Body Measurement, Has Centimetre Scale on Reverse Side 60-inch（White）
10K
▼ 50.0%vs. prior month
$36.9K
latest month
12-month trend
B08GKJ8Q8T
DIYSELF Craft Hobby Knife Set with 10 Extra #11 Blades, 6-Inch Metal Ruler | Exacto Knife for Crafting, Precision Cutting for Polymer Clay, Paper, Vinyl, Stencils & Models, Artists & Hobbyists, Purple
10K
▲ 25.0%vs. prior month
$49.9K
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
B0041EV3ES
STAEDTLER 10-Piece Math Set with Metal Compass, 6" Ruler & Triangle Squares, 45° & 30/60° Set Squares, Alphabet Stencil - Measuring Tools
4K
▲ 100.0%vs. prior month
$19.7K
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
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best Ruler Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
Westcott is the best-performing ruler brand in July 2026, moving 13,000 units across 2 ASINs for 23.6% of Top 10 volume. GDMINLO follows with 10,000 units (18.2%), ahead of DIYSELF on 10,000 units (18.2%).
With 8 brands splitting the Top 10 and 60.0% 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 $3.69 to $5.06, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
Westcott
2 ASINs in Top 10
23.6%
Units
13K
Revenue
$33.7K
Avg. price
$5.06
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 sold10KB00CHRN0SI
$7.64·★4.7·1.4K revsWestcott 10561 Acrylic Clear Ruler, 6 in
Units sold3K
GDMINLO
1 ASIN in Top 10
18.2%
Units
10K
Revenue
$36.9K
Avg. price
$3.69
B07MT89MCW
$3.69·★4.8·67.2K revsGDMINLO Soft Tape Measure Double Scale Body Sewing Flexible Tailor Craft Vinyl Ruler for Weight Loss Medical Body Measurement, Has Centimetre Scale on Reverse Side 60-inch（White）
Units sold10K
DIYSELF
1 ASIN in Top 10
18.2%
Units
10K
Revenue
$49.9K
Avg. price
$4.99
B08GKJ8Q8T
$4.99·★4.5·5.8K revsDIYSELF Craft Hobby Knife Set with 10 Extra #11 Blades, 6-Inch Metal Ruler | Exacto Knife for Crafting, Precision Cutting for Polymer Clay, Paper, Vinyl, Stencils & Models, Artists & Hobbyists, Purple
Units sold10K
Trending Ruler 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, 2 ASINs forced its way in: B09WVT6B5W booked 2K units at $5.99, with ▲ 566.7% MoM change. On the growth side, B08BNPDKJK leads positive momentum with ▲ 1900.0% MoM growth on 1K units.
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
515
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
515
Latest month sales
B08BNPDKJK
Mr. Pen- Plastic Rulers, 12 Inch, 6 Pack, Assorted Colors | Scratch-Resistant Design with Inches and Centimeters, Durable Transparent Rulers for Crafting Office & School
Unlock to view ASIN details and product titles
Price
$4.99
Rating
4.7
Reviews
2.5K
Latest month sales
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