Protractor Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Protractor sales on Amazon US totaled 41,050 units in July 2026 (▲ 70.2% vs. the prior month), generating an estimated $461,660 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 53.6% of unit volume and 66.1% of revenue, while a typical listing is priced at $9.11. The keyword itself pulled 115,355 Amazon queries over the same period (▲ 196.7% MoM).
Zooming out to the 12-month window ending July 2026, the protractor Top 50 moved 415,500 units and $5,410,525 in cumulative sales — an average of 34,625 units and $450,877 per month. Monthly throughput topped out at 93,000 units in August 2025 and dipped to 12,950 in May 2026, leaving the latest reading 55.9% lower than August 2025.
Protractor 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
41K
▲ 70.2% MoM
Monthly Revenue 2026/07
$461.7K
▲ 30.1% MoM
Top 10 Market Share 2026/07
53.6%
Protractor Market Share & Sales Concentration on Amazon US — July 2026
The most-sold protractor listing on Amazon US in July 2026 is ASIN B07ZWW3BW5 (Brand: KLEIN TOOLS), which sold 5,000 units at $32.97 apiece — equal to 12.2% of every unit tracked in this report and 25% ahead of the No. 2 listing.
The Top 10 ASINs account for 22,000 units and $305,300 in July 2026 — 53.6% of unit volume and 66.1% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Protractor' on Amazon
July 2026
Is 53.6% 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
B07ZWW3BW5
Klein Tools 935DAG Digital Electronic Level and Angle Gauge, Measures 0 - 90 and 0 - 180 Degree Ranges, Measures and Sets Angles
5K
▲ 0.0%vs. prior month
$164.3K
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
B0746GRPCV
EBOOT Drawing Compass and 6 in Protractor Geometry Set, Clear | Geometry Math Set, Swing Arm Protractor Ruler Compass, Geometry Drawing Tools for Measuring Angles
3K
▲ 50.0%vs. prior month
$18.3K
latest month
12-month trend
B06XB3P2RR
EBOOT Plastic Protractor Math Protractors 180 Degrees, 6 Inch, Pack of 2 (Clear)
2K
▲ 400.0%vs. prior month
$9.9K
latest month
12-month trend
B0F48MYBBP
Unjoo Plastic Protractor 6 Inch Math Protractors 180 Degrees, 2 Pack, Clear | Transparent Protractor for Geometry Classroom Student School, Office Supplies
2K
▲ 566.7%vs. prior month
$10K
latest month
12-month trend
B0DXZZ3Z4T
Nicpro 22 PCS Compass Geometry Tools with Case, Drafting Tool Geometry Set | With Swing Arm Protractor, Rulers, Metal Compass, Square Set, Mechanical Pencil, Back to School Supplies for Students
2K
▲ 100.0%vs. prior month
$23.1K
latest month
12-month trend
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best Protractor Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
KLEIN TOOLS is the best-performing protractor brand in July 2026, moving 5,000 units across 1 ASIN for 22.7% of Top 10 volume. EBOOT follows with 5,000 units (22.7%), ahead of STAEDTLER on 4,000 units (18.2%).
With 9 brands splitting the Top 10 and 63.6% 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 $4.99 to $32.97, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
KLEIN TOOLS
1 ASIN in Top 10
22.7%
Units
5K
Revenue
$164.3K
Avg. price
$32.97
B07ZWW3BW5
$32.97·★4.8·16.4K revsKlein Tools 935DAG Digital Electronic Level and Angle Gauge, Measures 0 - 90 and 0 - 180 Degree Ranges, Measures and Sets Angles
Units sold5K
EBOOT
2 ASINs in Top 10
22.7%
Units
5K
Revenue
$28.2K
Avg. price
$5.47
B0746GRPCV
$5.99·★4.3·5.3K revsEBOOT Drawing Compass and 6 in Protractor Geometry Set, Clear | Geometry Math Set, Swing Arm Protractor Ruler Compass, Geometry Drawing Tools for Measuring Angles
Units sold3KB06XB3P2RR
$4.95·★4.7·2.2K revsEBOOT Plastic Protractor Math Protractors 180 Degrees, 6 Inch, Pack of 2 (Clear)
Units sold2K
STAEDTLER
1 ASIN in Top 10
18.2%
Units
4K
Revenue
$19.7K
Avg. price
$4.99
B0041EV3ES
$4.99·★4.5·2.7K revsSTAEDTLER 10-Piece Math Set with Metal Compass, 6" Ruler & Triangle Squares, 45° & 30/60° Set Squares, Alphabet Stencil - Measuring Tools
Units sold4K
Trending Protractor 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: B06XB3P2RR booked 2K units at $4.95, with ▲ 400.0% 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.
B06XB3P2RR
EBOOT Plastic Protractor Math Protractors 180 Degrees, 6 Inch, Pack of 2 (Clear)
Price
$4.95
Rating
4.7
Reviews
2.2K
Latest month sales
B0F48MYBBP
Unjoo Plastic Protractor 6 Inch Math Protractors 180 Degrees, 2 Pack, Clear | Transparent Protractor for Geometry Classroom Student School, Office Supplies
Price
$4.99
Rating
4.8
Reviews
252
Latest month sales
B0D41NYXLP
Compass Geometry Tool Protractor and Compass Set with Metal Box Drawing Compass with Rulers Math Compass Kit for Class Supplies and School 8 Piece
Unlock to view ASIN details and product titles
Price
$6.99
Rating
4.6
Reviews
378
Latest month sales
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