Real data, ranked. No fluff, no filler.

The 10 Best Speed Squares

Speed squares, rafter squares and layout squares for framing and woodworking, ranked from live Amazon data.

Ranked by ToolboxTop10 from Amazon data captured Oct 10, 2026. How we rank

A speed square marks square and angled cuts, guides your circular saw and lays out rafters. We ranked 10 best-sellers from Swanson, Johnson Level, Klein Tools, Milwaukee and value brands on rating, review volume and features (aluminum construction, scribe notches, rafter guides and multi-square packs).

Best Overall Swanson Speed Square, 7-Inch Aluminum Layout Square with Blue Book (S0101)
Swanson
Swanson Speed Square, 7-Inch Aluminum Layout Square with Blue Book (S0101)
4.8 (17,328)
$9.98
View on Amazon →
Best Budget Swanson T0118 8-Inch Composite Speedlite Speed Square
Swanson
Swanson T0118 8-Inch Composite Speedlite Speed Square
4.8 (4,920)
$4.99
View on Amazon →
Money No Object Johnson Level 1904-0700V 7-1/4-Inch Johnny Square MACH-1 Smart Mark Rafter Square with Level Vial
Johnson Level
Johnson Level 1904-0700V 7-1/4-Inch Johnny Square MACH-1 Smart Mark Rafter Square with Level Vial
4.7 (267)
$34.70
View on Amazon →

Which one is for you?

Where the deals are

The tools ranked here come from Swanson, THORVALD, Klein Tools, Mecurate, Johnson Level, and Milwaukee. Prices on these brands move week to week on Amazon, and the deepest cuts usually land around Prime Day and Black Friday. Every price button on this page opens the live listing, so you always see today's number, not the one we captured on 2026-10-10. If your pick is over budget right now, check back in a few days — Swanson and THORVALD rotate through sales and bundle deals often.

Side-by-side comparison

Swipe the table sideways for more columns →

#ToolPriceRatingReviewsSizeMaterialScribe notchesRafter guideScore
1Swanson SW1201K$16.504.810,2907 in and 12 inAluminumNoYes92
2Swanson S0101CB$16.594.88,7557 in speed square, 6 in combination squareAluminum speed square, die-cast zinc combination headNoYes91
3Swanson S0101$9.984.817,3287 inDie-cast aluminumNoYes89
4THORVALD 51gd5$22.974.82,0957 inAluminum, 4 mm thickYesNo82
5Klein Tools 9357SSQ$14.984.82867 inAluminumYesYes80
6Swanson T0118$4.994.84,9208 inHigh-impact polystyreneYesNo79
7Swanson S0100-A$14.984.81,3347 in—YesYes79
8Mecurate MDSS$9.994.71,4747 inDie-cast aluminumNoNo75
9Johnson Level 1904-0700V$34.704.72677-1/4 in—YesYes73
10Milwaukee MLSQ070P$33.864.62377 in and 4-1/2 in—YesNo70
✕ALLWIN AL-SJC25$5.994.5368Claims it works as a level, with no vialAVOID

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The full ranking

#1
Swanson SW1201K Value Pack: 7-Inch Speed Square and Big 12 Speed Square with Blue Book
Swanson

Swanson SW1201K Value Pack: 7-Inch Speed Square and Big 12 Speed Square with Blue Book

4.8 10,290 reviews
Score 92/100
Why this score
  • Star rating 45% of score96/100 → 43 pts
  • Number of reviews 35% of score96/100 → 34 pts
  • Features 20% of score75/100 → 15 pts

Has: aluminum, rafter guide, multi pack. Missing: scribe notches.

Total: 92/100. How the score works

$16.50
Check price on Amazon
3K+/mo

Swanson's 7-inch Speed Square plus the 12-inch Big 12 for wider stock and stair stringers, with the Blue Book, and 3,000+ sold last month.

Best for: Framers and roofers who cut rafters and stair stringers.

Skip it if: You only need the 7 inch.

Size
7 in and 12 in
Material
Aluminum
Markings
Common, hip, valley and jack rafter scales
Extras
Blue Book

Pros

  • Two squares
  • 3,000+ sold last month
  • Rafter scales

Cons

  • Big 12 has no layout bar
#2
Swanson S0101CB Value Pack: 7-Inch Speed Square, 6-Inch Combination Square and Blue Book
Swanson

Swanson S0101CB Value Pack: 7-Inch Speed Square, 6-Inch Combination Square and Blue Book

4.8 8,755 reviews
Score 91/100
Why this score
  • Star rating 45% of score96/100 → 43 pts
  • Number of reviews 35% of score94/100 → 33 pts
  • Features 20% of score75/100 → 15 pts

Has: aluminum, rafter guide, multi pack. Missing: scribe notches.

Total: 91/100. How the score works

$16.59
Check price on Amazon
100+/mo

The aluminum Speed Square paired with a 6-inch combination square that has a level vial, for marking depths and trim.

Best for: Woodworkers who need both a layout square and a combination square.

Skip it if: You already own a combination square.

Size
7 in speed square, 6 in combination square
Material
Aluminum speed square, die-cast zinc combination head
Markings
Rafter scales
Extras
Combination square with level vial, Blue Book

Pros

  • Two squares
  • Combination square with vial
  • 4.8 stars

Cons

  • Combo square is 6 in
#3
Swanson Speed Square, 7-Inch Aluminum Layout Square with Blue Book (S0101)
Best Overall
Swanson

Swanson Speed Square, 7-Inch Aluminum Layout Square with Blue Book (S0101)

4.8 17,328 reviews
Score 89/100
Why this score
  • Star rating 45% of score96/100 → 43 pts
  • Number of reviews 35% of score100/100 → 35 pts
  • Features 20% of score55/100 → 11 pts

Has: aluminum, rafter guide. Missing: scribe notches, multi pack.

Total: 89/100. How the score works

$9.98
Check price on Amazon
2K+/mo

The original Speed Square and the most-reviewed square here, at 17,328 reviews and 4.8 stars: die-cast aluminum, machined true at 45 and 90 degrees, made in the USA, with Swanson's Blue Book of rafter tables.

Best for: Every carpenter, framer and DIYer.

Skip it if: You want scribe notches called out; the listing doesn't mention them.

Size
7 in
Material
Die-cast aluminum
Markings
Rafter scales, CNC-machined 45° and 90°
Extras
Blue Book rafter guide, matte finish, made in USA

Pros

  • 17,328 reviews; 4.8 stars
  • Made in USA
  • Blue Book included

Cons

  • 7 in only
#4
THORVALD 6-in-1 Carpenter Square, 7-Inch, 1/16-Inch Precision
THORVALD

THORVALD 6-in-1 Carpenter Square, 7-Inch, 1/16-Inch Precision

4.8 2,095 reviews
Score 82/100
Why this score
  • Star rating 45% of score96/100 → 43 pts
  • Number of reviews 35% of score80/100 → 28 pts
  • Features 20% of score55/100 → 11 pts

Has: aluminum, scribe notches. Missing: rafter guide, multi pack.

Total: 82/100. How the score works

$22.97
Check price on Amazon
900+/mo

A 4 mm aluminum square with protractors, marking gauges and a drill gauge built in, rated 4.8 stars on 2,095 reviews.

Best for: Woodworkers who want marking gauges in a pocket square.

Skip it if: You cut rafters; there are no rafter tables.

Size
7 in
Material
Aluminum, 4 mm thick
Markings
Laser-engraved, 1/16 in
Extras
Square, two protractors, marking gauge, drill gauge, wrench

Pros

  • Marking gauge built in
  • 4.8 stars
  • 4 mm aluminum

Cons

  • No rafter scales
#5
Klein Tools 9357SSQ Rafter Square, 7-Inch, Double Laser Etched Aluminum
Klein Tools

Klein Tools 9357SSQ Rafter Square, 7-Inch, Double Laser Etched Aluminum

4.8 286 reviews
Score 80/100
Why this score
  • Star rating 45% of score96/100 → 43 pts
  • Number of reviews 35% of score59/100 → 21 pts
  • Features 20% of score80/100 → 16 pts

Has: aluminum, scribe notches, rafter guide. Missing: multi pack.

Total: 80/100. How the score works

$14.98
Check price on Amazon
500+/mo

Klein's 7-inch rafter square with 1/4-inch scribe notches and a prop that holds pipe steady for marking and cutting.

Best for: Electricians and plumbers who mark conduit and pipe.

Skip it if: You want die-cast markings; these are laser-etched.

Size
7 in
Material
Aluminum
Markings
Double laser-etched
Extras
1/4 in scribe notches, pipe prop

Pros

  • Pipe prop
  • Scribe notches
  • 4.8 stars

Cons

  • Only 286 reviews
#6
Swanson T0118 8-Inch Composite Speedlite Speed Square
Best Budget
Swanson

Swanson T0118 8-Inch Composite Speedlite Speed Square

4.8 4,920 reviews
Score 79/100
Why this score
  • Star rating 45% of score96/100 → 43 pts
  • Number of reviews 35% of score88/100 → 31 pts
  • Features 20% of score25/100 → 5 pts

Has: scribe notches. Missing: aluminum, rafter guide, multi pack.

Total: 79/100. How the score works

$4.99
Check price on Amazon
500+/mo

A light 8-inch composite Speed Square with scribe notches and a center-line guide, for about $5.

Best for: Siding installers and anyone who keeps losing squares.

Skip it if: You want aluminum durability.

Size
8 in
Material
High-impact polystyrene
Markings
Center line guide
Extras
1/8 in scribe notches, beveled edge

Pros

  • About $5
  • Scribe notches
  • 4,920 reviews

Cons

  • Plastic
#7
Swanson Speed Square Pro, 7-Inch (S0100-A)
Swanson

Swanson Speed Square Pro, 7-Inch (S0100-A)

4.8 1,334 reviews
Score 79/100
Why this score
  • Star rating 45% of score96/100 → 43 pts
  • Number of reviews 35% of score75/100 → 26 pts
  • Features 20% of score50/100 → 10 pts

Has: scribe notches, rafter guide. Missing: aluminum, multi pack.

Total: 79/100. How the score works

$14.98
Check price on Amazon
700+/mo

A Speed Square with marking guides cut into the walls at common widths and a 22-1/2-degree guide for octagons and 5-pitch rafters.

Best for: Framers laying out stud walls fast.

Skip it if: You want the Blue Book; it isn't listed.

Size
7 in
Material
—
Markings
Double stud wall layout, 22-1/2° pitch guide
Extras
3/8, 1/2, 3/4 and 1-1/2 in marking guides in the walls

Pros

  • Marking guides
  • Stud wall layout
  • 4.8 stars

Cons

  • Thin listing
#8
Mecurate 7-Inch Die-Cast Aluminum Triangle Rafter Square (MDSS)
Mecurate

Mecurate 7-Inch Die-Cast Aluminum Triangle Rafter Square (MDSS)

4.7 1,474 reviews
Score 75/100
Why this score
  • Star rating 45% of score94/100 → 42 pts
  • Number of reviews 35% of score76/100 → 27 pts
  • Features 20% of score30/100 → 6 pts

Has: aluminum. Missing: scribe notches, rafter guide, multi pack.

Total: 75/100. How the score works

$9.99
Check price on Amazon
500+/mo

A die-cast aluminum rafter square for about $10.

Best for: A cheap spare square.

Skip it if: You want Swanson's markings and Blue Book for the same price.

Size
7 in
Material
Die-cast aluminum
Markings
Laser-engraved
Extras
Hanging hole

Pros

  • Die-cast aluminum
  • About $10

Cons

  • Generic markings
#9
Johnson Level 1904-0700V 7-1/4-Inch Johnny Square MACH-1 Smart Mark Rafter Square with Level Vial
Money No Object
Johnson Level

Johnson Level 1904-0700V 7-1/4-Inch Johnny Square MACH-1 Smart Mark Rafter Square with Level Vial

4.7 267 reviews
Score 73/100
Why this score
  • Star rating 45% of score94/100 → 42 pts
  • Number of reviews 35% of score58/100 → 21 pts
  • Features 20% of score50/100 → 10 pts

Has: scribe notches, rafter guide. Missing: aluminum, multi pack.

Total: 73/100. How the score works

$34.70
Check price on Amazon
1K+/mo

A layout square with cutouts at stud, joist and LVL widths, angle slots, and a level vial that reads roof pitch on existing framing.

Best for: Framers who want layout and a level in one tool.

Skip it if: You're on a budget; it costs more than three times a Speed Square.

Size
7-1/4 in
Material
—
Markings
Stud, joist and LVL layout cutouts; 22.5°, 30°, 45° and 60° slots
Extras
Level vial with 320° visibility, reads roof pitch

Pros

  • Built-in level vial
  • Layout cutouts
  • Angle slots

Cons

  • Expensive
  • Only 267 reviews
#10
Milwaukee 7-Inch Rafter Square and 4-1/2-Inch Trim Square Set (MLSQ070P)
Milwaukee

Milwaukee 7-Inch Rafter Square and 4-1/2-Inch Trim Square Set (MLSQ070P)

4.6 237 reviews
Score 70/100
Why this score
  • Star rating 45% of score92/100 → 41 pts
  • Number of reviews 35% of score57/100 → 20 pts
  • Features 20% of score45/100 → 9 pts

Has: scribe notches, multi pack. Missing: aluminum, rafter guide.

Total: 70/100. How the score works

$33.86
Check price on Amazon
50+/mo

A 7-inch rafter square and a compact 4-1/2-inch trim square for tight trim work.

Best for: Trim carpenters and Milwaukee fans.

Skip it if: You want a value set; Swanson's pack costs half as much.

Size
7 in and 4-1/2 in
Material
—
Markings
Laser-etched
Extras
Scribe notches 1 to 6 in, 1 in pipe prop cutout

Pros

  • Two squares
  • Compact trim square
  • Pipe prop

Cons

  • Expensive
  • 4.6 stars

How we rank

Every tool gets one score from 0 to 100, weighted 45% on its star rating, 35% on how many people have reviewed it (more reviews = more confidence the rating is real), and 20% on the features that matter for the job. The list is ordered by that score. Best Overall is our pick for the best all-around, ready-to-use tool; Best Budget the best value at or under $10; and Money No Object the one to buy if price is no object.

The features score is built from aluminum (30%), scribe notches (25%), rafter guide (25%), multi pack (20%), capped at 100. The review-count score is on a log scale, so each tenfold jump in reviews adds the same amount, and 15,000 or more reviews gets full marks. Open Why this score on any tool to see its numbers.

What changed

We re-check every listing on this page on a rotation. The most recent changes:

Buyer's guide

What's a speed square for?

Marking square and 45-degree lines on boards, guiding a circular saw for square cuts, and laying out rafter angles. It's the most-used layout tool on a framing job.

7 or 12 inch?

The 7-inch fits a tool belt and covers 2x lumber. A 12-inch square spans wider boards and is better for stair stringers and wide rafters.

Die-cast or laser-etched?

Die-cast markings are molded into the square and can't wear off. Laser-etched markings are crisp but can fade with heavy use.

What are scribe notches?

Notches at set intervals let you hold a pencil in place and slide the square along a board to draw a line parallel to the edge.

Do I need the Blue Book?

Only for rafters. It explains how to use the degree and pitch scales to mark common, hip, valley and jack rafters.

Tools to avoid

Not everything in the search results deserves your money. This one would rank dead last on our scale — here's the listing to walk past, and exactly why.

✕ Avoid
ALLWIN 7-Inch Aluminum Rafter Square, Double-Sided Engraved Scales (AL-SJC25)
ALLWIN

ALLWIN 7-Inch Aluminum Rafter Square, Double-Sided Engraved Scales (AL-SJC25)

4.5 368 reviews   $5.99

A cheap rafter square that claims it replaces a level and lasts three times longer, with no vial or test behind either claim.

Why we'd skip it

  • It says it 'acts as a level', but nothing in the listing describes a level vial. The Johnson square that does work as a level has one.
  • It claims '0.1mm precision' and a '3X longer lifespan than stamped squares' without a standard or test.
  • It's rated 4.5 stars on 368 reviews. The Swanson T0118 costs less, and the Swanson S0101 costs a few dollars more with 17,328 reviews.
See the listing on Amazon (so you recognize it)
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