Chalk Line Market Report: Sales Volume, Market Share, Leading Brands & Market Trends
Chalk Line sales on Amazon US totaled 9,950 units in July 2026 (▼ 1.0% vs. the prior month), generating an estimated $190,748 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 63.3% of unit volume and 54.0% of revenue, while a typical listing is priced at $25.55. The keyword itself pulled 25,341 Amazon queries over the same period (▲ 1.8% MoM).
Zooming out to the 12-month window ending July 2026, the chalk line Top 50 moved 94,900 units and $1,975,352 in cumulative sales — an average of 7,908 units and $164,613 per month. Monthly throughput topped out at 10,050 units in June 2026 and dipped to 5,300 in May 2026, leaving the latest reading 19.9% higher than August 2025.
Chalk Line 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
9.9K
▼ 1.0% MoM
Monthly Revenue 2026/07
$190.7K
▼ 2.8% MoM
Top 10 Market Share 2026/07
63.3%
Chalk Line Market Share & Sales Concentration on Amazon US — July 2026
The most-sold chalk line listing on Amazon US in July 2026 is ASIN B0BWL62GNJ (Brand: IRWIN), which sold 2,000 units at $9.59 apiece — equal to 20.1% of every unit tracked in this report and 2.0× the volume of the No. 2 listing.
The Top 10 ASINs account for 6,300 units and $103,001 in July 2026 — 63.3% of unit volume and 54.0% of revenue among all 50 ranked ASINs in this report.
Sales Volume of Top ASINs for 'Chalk Line' on Amazon
July 2026
Is 63.3% 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
B0BWL62GNJ
IRWIN Tools STRAIT-LINE Chalk Line, Classic Reel, Blue, 100ft (IWHT48441BC)
2K
▲ 0.0%vs. prior month
$16.8K
latest month
12-month trend
B08GL1MK1V
Tajima Chalk Line - Chalk-Rite Jam Free Special Edition Chalk Line with Extra Bold 1mm Snap Line & Five Gear Quick Retrieval - CR301JF-CP
1K
▲ 0.0%vs. prior month
$28.9K
latest month
12-month trend
B0C5G7FNHW
IRWIN Tools STRAIT-LINE COMPACT Chalk Reel, with Blue Chalk, 30 ft. (IWHT48440BC)
1K
▲ 0.0%vs. prior month
$9.6K
latest month
12-month trend
B0BWL3BMJ2
IRWIN Tools STRAIT-LINE Chalk Line, Speedline Pro Reel, Blue, 100 ft. (IWHT48443BC)
600
▲ 50.0%vs. prior month
$6.6K
latest month
12-month trend
B001TH8DIO
Tajima Chalk Line, ChalkRite Jam Free Bold | ChalkRite II Chalk Box Delivers Ultrathin 0.5 mm Snap Line, Engineered for Precision Construction Layouts, CR202BP
500
▲ 0.0%vs. prior month
$15.8K
latest month
12-month trend
B0BZTHTXG1
Tajima Chalk Line, ChalkRite Jam Free UltraThin | ChalkRite Jam Free Chalk Box Delivers Extra Bold 1mm Snap Line, Engineered for Professional Construction Layouts, CR301J
400
▲ 33.3%vs. prior month
$12.7K
latest month
12-month trend
Unlock to view all Top 50 ASIN competitors and their sales contributions
Best Chalk Line Brands on Amazon US — Top 3 Brand Sales Concentration (July 2026)
IRWIN is the best-performing chalk line brand in July 2026, moving 4,200 units across 6 ASINs for 66.7% of Top 10 volume. Tajima follows with 1,900 units (30.2%), ahead of Milwaukee on 200 units (3.2%).
With 3 brands splitting the Top 10 and 100.0% 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 $12.15 to $31.64, which frames the price band a competing listing has to justify.
Brand share of Top 10 volume
IRWIN
6 ASINs in Top 10
66.7%
Units
4.2K
Revenue
$40.5K
Avg. price
$12.15
B0BWL62GNJ
$9.59·★4.4·579 revsIRWIN Tools STRAIT-LINE Chalk Line, Classic Reel, Blue, 100ft (IWHT48441BC)
Units sold2KB0C5G7FNHW
$9.90·★4.4·623 revsIRWIN Tools STRAIT-LINE COMPACT Chalk Reel, with Blue Chalk, 30 ft. (IWHT48440BC)
Units sold1KB0BWL3BMJ2
$17.98·★4.3·352 revsIRWIN Tools STRAIT-LINE Chalk Line, Speedline Pro Reel, Blue, 100 ft. (IWHT48443BC)
Units sold600B00004YOCD
$9.14·★4.6·222 revsIrwin 5 Lb. White Chalk Standard
Units sold200B000089H9I
$6.29·★4.8·453 revsIRWIN Tools STRAIT-LINE 65201 Standard Marking Chalk, 2.5-pound, Blue (65201)
Units sold200B004V4HUMC
$19.99·★4.6·777 revsIRWIN Tools STRAIT-LINE Permanent Staining Marking Chalk, Indigo Blue, 4 lb (4935524)
Units sold200
Tajima
3 ASINs in Top 10
30.2%
Units
1.9K
Revenue
$57.3K
Avg. price
$31.64
B08GL1MK1V
$31.64·★4.6·8.5K revsTajima Chalk Line - Chalk-Rite Jam Free Special Edition Chalk Line with Extra Bold 1mm Snap Line & Five Gear Quick Retrieval - CR301JF-CP
Units sold1KB001TH8DIO
$31.64·★4.6·8.5K revsTajima Chalk Line, ChalkRite Jam Free Bold | ChalkRite II Chalk Box Delivers Ultrathin 0.5 mm Snap Line, Engineered for Precision Construction Layouts, CR202BP
Units sold500B0BZTHTXG1
$31.64·★4.4·452 revsTajima Chalk Line, ChalkRite Jam Free UltraThin | ChalkRite Jam Free Chalk Box Delivers Extra Bold 1mm Snap Line, Engineered for Professional Construction Layouts, CR301J
Units sold400
Milwaukee
1 ASIN in Top 10
3.2%
Units
200
Revenue
$5.2K
Avg. price
$25.65
B07RNKWL2P
$25.65·★4.2·140 revsMilwaukee ELEC Tool 48-22-3986 Bold Line Chalk Reel (2-Pack)
Units sold200
Trending Chalk Line 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: B00004YOCD booked 200 units at $9.14, with ▲ 0.0% MoM change. On the growth side, B0GH8QKTRG leads positive momentum with ▲ 100.0% MoM growth on 200 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.
B00004YOCD
Irwin 5 Lb. White Chalk Standard
Price
$9.14
Rating
4.6
Reviews
222
Latest month sales
B07RNKWL2P
Milwaukee ELEC Tool 48-22-3986 Bold Line Chalk Reel (2-Pack)
Price
$25.65
Rating
4.2
Reviews
140
Latest month sales
B0GH8QKTRG
KLEIN TOOLS CHLK30S Compact Chalk Reel, 30-Foot, 3:1 Gear Ratio, Quick-Release Spool Clutch, Chalk Line and Twist-Lock Top with a Nested Hook Design
Unlock to view ASIN details and product titles
Price
$8.98
Rating
4.3
Reviews
66
Latest month sales
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