Chalk Line
MaybeAn estimated 0.5% of orders come back. But the top 5 products take 73% of clicks, so Chalk Line is a Maybe.
- Flapen Score
- 52 / 100Top 33% of 2,225 DIY & Tools niches · +3 vs the category median of 4952
- Market size
- £220K/yr128K searches / yr
- 90-day growth
- -2.2%search demand this quarter
- Competition
- 73%top-5 click share · 10 brands · 81 sellers
Flapen Score
Chalk Line against its category
The dotted line is the DIY & Tools average. Past it, Chalk Line is stronger. Inside it, weaker.
Market
The Chalk Line market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Chalk Line 128K times last year and spent an estimated £220K. The top 5 brands take 86% of clicks. Flapen scores it 52 out of 100, a Maybe.
01 · Demand
An estimated 13.2% of those searches ended in a purchase.
Shoppers searched for this 128K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 13.2% of those searches ended in a purchase. Searches in the last 90 days moved -2.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated £220K a year.
- Searches, last 12 months
- 128K
- Growth, 90 days vs prior 90
- -2.2%
- Conversion, latest week
- 13.2%
- Market size, estimated
- £220Ka year
- Peak month
- October1.6× the quietest month
- Top search term
- chalk line104K searches a year
02 · Price
A sale here is worth £13.00.
Listings sell for £13.00 on average, from £4.30 to £26.13. Amazon reports units sold in ranges. This niche sold 13K to 15K a year. The average listing sells 500 to 750 of them. At £13.00 that is £7K to £10K a year per listing.
- Average price
- £13.00under the $15 to $100 sweet spot
- Price range
- £4.30–£26.13
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 13K–15K
- Units per listing a year
- 500–750
- Revenue per listing a year
- £7K–£10K
- Returns
- 0.5%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is low.
60% of listings pay for placement with sponsored ads. 87% ship with Prime. On an average day, 3.2% of listings are out of stock. The average listing ranks #271 within Measuring & Layout Tools. It carries 563 reviews at 4.33 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 60%
- Prime listings
- 87%
- Out of stock, average day
- 3.2%
- Average rank
- #271in Measuring & Layout Tools
- Average rating
- 4.33 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 563per listing
- Listings tracked
- 15
04 · Newcomers
Brands here are established.
The brands on the shelf have sold for 79 months on average, so the names here are established.
- Launched, last 12 months
- 0
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 79 months
Products
Top Chalk Line 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 22, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
OX Trade 30m/100 ABS Chalk Reel w/Grip Value Pack - Standard Bold Line / 6:1 Gear Ratio
- Price
- £9.60
- Rating
- 4.4/5
- Reviews
- 260
- Age
- 1y ago

Tolsen Chalk Line Reel Set 30m (100ft) Heavy Duty Builders Chalk String Line Kit with Fast Rewind Reel and 115g Blue Marking Powder for Brick Timber and Floors
- Price
- £7.22
- Rating
- 4.3/5
- Reviews
- 957
- Age
- 6y ago

OX Pro Precision Chalk Reel Value Pack 50ft Kevlar Line 3:1 Fast Rewind
- Price
- £9.11
- Rating
- 4.4/5
- Reviews
- 319
- Age
- 1y ago

Milwaukee ELEC Tool 48-22-3986 Bold Line Chalk Reel
- Price
- £14.95
- Rating
- 4.6/5
- Reviews
- 861
- Age
- 9y ago

Amtech 2-Piece Chalk Line Kit 30 m Self-Chalking Reel with High-Visibility Powder Lightweight Aluminium Body for Fast Clean Marking
- Price
- £5.02
- Rating
- 3.9/5
- Reviews
- 124
- Age
- 15y ago
Trending
estimated 90-day click momentum
OX Pro Precision Chalk Reel Value Pack 50ft Kevlar Line 3:1 Fast Rewind
- Price
- £9.11
- Rating
- 4.4/5
- Reviews
- 319
- Age
- 1y ago

PRESCH Chalk Line 30m incl. red chalk (150 g) - Fast retraction thanks to 6:1 gearbox - Water repellent and durable - Robust line for precise marking
- Price
- £18.40
- Rating
- 4.6/5
- Reviews
- 182
- Age
- 1y ago

HAUTMEC Chalk Line Tool 30m Chalk Box with 6:1 Gear Ratio & Construction String Line Carpenter Tools for Framers Roofers and Deck Builders HT0108
- Price
- £10.24
- Rating
- 3.9/5
- Reviews
- 184
- Age
- 6y ago

Stanley STHT0-47244 Chalk Line-Set Multi-Colour 9 m
- Price
- £12.57
- Rating
- 4.5/5
- Reviews
- 1,114
- Age
- 12y ago

Amtech 2-Piece Chalk Line Kit 30 m Self-Chalking Reel with High-Visibility Powder Lightweight Aluminium Body for Fast Clean Marking
- Price
- £5.02
- Rating
- 3.9/5
- Reviews
- 124
- Age
- 15y ago
Newest
by launch date
PRESCH Chalk Line 30m incl. red chalk (150 g) - Fast retraction thanks to 6:1 gearbox - Water repellent and durable - Robust line for precise marking
- Price
- £18.40
- Rating
- 4.6/5
- Reviews
- 182
- Age
- 1y ago

OX Trade 30m/100 ABS Chalk Reel w/Grip Value Pack - Standard Bold Line / 6:1 Gear Ratio
- Price
- £9.60
- Rating
- 4.4/5
- Reviews
- 260
- Age
- 1y ago

OX Pro Precision Chalk Reel Value Pack 50ft Kevlar Line 3:1 Fast Rewind
- Price
- £9.11
- Rating
- 4.4/5
- Reviews
- 319
- Age
- 1y ago

OX Contractor 30m Chalk Reel Aluminium Housing 1:1 Fast Rewind
- Price
- £4.94
- Rating
- 3.6/5
- Reviews
- 87
- Age
- 1y ago

Maxi Chalk Line 30mtr Road/Roof Marking c/w 2No Chalk Flasks Yellow
- Price
- £25.75
- Rating
- 4.6/5
- Reviews
- 85
- Age
- 4y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 73% of clicks. A locked shelf that new listings rarely crack.
Brands
10 falling
Sellers
81
Est. top-5 brand share
86%
Top 20: 100%
Est. top-5 click share
73%
Top 20: 100%
Open market
9%
- OX Tools43%
- Tolsen20%
- Milwaukee9%
- Amtech8%
- STANLEY6%
- Tajima5%
- Open — no brand owns it (4 brands, 9%)
Demand
Chalk Line search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.6×
Search terms
Top Chalk Line search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- chalk line104K/yr
- chalk line tool12K/yr
- chalk lines5K/yr
- chalk string line3K/yr
- chalkline3K/yr
Reviews and returns
What reviews say buyers love and hate about Chalk Line
We read the reviews and the return reasons for every product selling here.
“Poor quality, plastic, has gaps, chalk comes out”
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.
21 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Chalk Line 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








