PricepectAI-Verified Comparisons

Comparisons About

⌘K

Pricepect

Independent product comparisons to help you buy smarter.

Browse

Categories
Comparisons
Spec Comparisons
Head-to-Head
Search

Info

About
Privacy Policy
Terms of Service

Top Categories

Electronics
Home & Kitchen
Sports & Outdoors
Automotive

✓ Independent & Unbiased✓ AI-Verified Data✓ Expert-Reviewed

Pricepect participates in the Amazon Services LLC Associates Program. As an Amazon Associate, we earn from qualifying purchases. © 2026 Pricepect. All rights reserved.

DeWalt DCS391B — Review & Specs | Pricepect | Pricepect

Home Circular SawsDeWalt DCS391B

DeWalt DCS391B — image 1

Dewalt

DeWalt DCS391B

Expert Review Analysis

The DeWalt DCS391B is a 20V MAX cordless 6-1/2-inch sidewinder-style circular saw designed for framing, remodeling, and general wood cutting. It features a brushed motor with a no-load speed of 5,150 RPM and a 50-degree bevel capacity, positioning it as a lightweight, portable option for DIYers and light trade professionals.

✓ Best for: DIY homeowners, remodelers, and light trade professionals needing a portable saw for one-handed use on ladders or in tight spaces, specifically for framing 2X lumber and bevel cuts up to 50 degrees.✗ Not ideal for: Heavy demolition tasks, metal cutting, or professional jobs requiring sustained high-power performance and advanced safety features like electric brakes.

Pros

✓High RPM of 5,150 enables fast cuts through standard 2X lumber materials
✓Compact 6-1/2-inch blade design offers better portability than full-size models
✓50-degree bevel capacity allows for versatile angled cuts on roofing and trim

Best Seller Rank History

Now#1Best#1Worst#31

Lower = better sales rank

Specifications

Features

Blade TypeCarbide-tipped

Gear TypeHelical

Shoe MaterialMagnesium

Blade OrientationSidewinder (Blade-Right)

Speed ControlFixed Speed

General

BrandDEWALT

ManufacturerDEWALT

ModelDCS391B

ColorYellow

Warranty3 Year Limited Warranty

Performance

No-load Speed5150 RPM RPM

Blade Diameter165 mm mm

Depth of Cut at 90 Degrees54 mm mm

Depth of Cut at 45 Degrees41 mm mm

Bevel Capacity50 Degrees Degrees

Power

Voltage20V MAX V

Motor TypeBrushed

Motor

Motor TypeBrushed (sidewinder style)

Gear

Gear TypeHelical gear

Blade

Blade CompatibilityCarbide-tipped blade compatible

Dimensions & Weight

Height10.5 inches

Width8.5 inches

Depth15.5 inches

Weight6.9666074791999995 pounds

Research Sources

Similar Products

DEWALT Circular Saw Blade, 5 3/8 Inch, 16 Tooth, Wood Cutting (DW9055)

DEWALT Circular Saw Blade, 5 3/8 Inch, 16 Tooth, Wood Cutting (DW9055)

DEWALT

SKILSAW SPT78W-01 15-Amp 8-1/4-Inch Aluminum Worm Drive Circular Saw

SKILSAW SPT78W-01 15-Amp 8-1/4-Inch Aluminum Worm Drive Circular Saw

Skil

Prazi 12" Beam Cutter Attachment for Circular Saws – For 7-1/4"-8-1/2" WormDrive Saws – American Owned Company – Increase Cut Depth from 2-1/2” to 12”

Prazi 12" Beam Cutter Attachment for Circular Saws – For 7-1/4"-8-1/2" WormDrive Saws – American Owned Company – Increase Cut Depth from 2-1/2” to 12”

Prazi

Big Foot Tools 10 1/4 Circular Saw Magnesium Worm Drive Saw Beam Saw with Skil Motor - Professional Power Saw for One Pass Precision Cutting and Durability - BF-UG - SC-1025SU

Big Foot Tools 10 1/4 Circular Saw Magnesium Worm Drive Saw Beam Saw with Skil Motor - Professional Power Saw for One Pass Precision Cutting and Durability - BF-UG - SC-1025SU

Big Foot Tools

DEWALT

SWANSON Tool Co S0101 7 Inch Speed Square, Blue

SWANSON Tool Co S0101 7 Inch Speed Square, Blue

Swanson Tool Co., Inc

DEWALT Circular Saw Blade, 6 1/2 Inch, 36 Tooth, Aluminum Cutting (DW9152)

DEWALT Circular Saw Blade, 6 1/2 Inch, 36 Tooth, Aluminum Cutting (DW9152)

DEWALT

DEWALT Black Oxide Drill Bit Set with Pilot Point, 13-Piece (DW1163)

DEWALT Black Oxide Drill Bit Set with Pilot Point, 13-Piece (DW1163)

DEWALT

DEWALT DW3715H 3-Inch 12 TPI Scrolling HSS U-Shank Woodcutting Jig Saw Blade (5-Pack)

DEWALT DW3715H 3-Inch 12 TPI Scrolling HSS U-Shank Woodcutting Jig Saw Blade (5-Pack)

DEWALT

DEWALT DW3765H 3-Inch 12 TPI Trim/Coping HCS T-Shank Jig Saw Blade (5-Pack)

DEWALT DW3765H 3-Inch 12 TPI Trim/Coping HCS T-Shank Jig Saw Blade (5-Pack)

DEWALT

DEWALT DW4811 6-Inch 18 TPI Straight Back Bi-Metal Reciprocating Blade (5-pack)

DEWALT DW4811 6-Inch 18 TPI Straight Back Bi-Metal Reciprocating Blade (5-pack)

DEWALT

DEWALT Reciprocating Saw Blade Set for Metal and Woodcutting, 6 Piece (DW4856)

DEWALT Reciprocating Saw Blade Set for Metal and Woodcutting, 6 Piece (DW4856)

DEWALT

DEWALT DW5227 5/32-Inch by 6-Inch Carbide Hammer Drill Bit

DeWalt DW5470 5 Piece Rock Carbide SDS Plus Drill Bit Set

DeWalt DW5470 5 Piece Rock Carbide SDS Plus Drill Bit Set

DEWALT

DeWalt DW5825 1-1/4" x 18" x 22-1/2" 4-Cutter SDS Max Rotary Hammer Bit

DeWalt DW5825 1-1/4" x 18" x 22-1/2" 4-Cutter SDS Max Rotary Hammer Bit

DEWALT

Ingersoll Rand 429 Reciprocating Air Saw, 3/8" Stroke Length, 10,000 Strokes per Minute, 1.3 lbs

Ingersoll Rand 429 Reciprocating Air Saw, 3/8" Stroke Length, 10,000 Strokes per Minute, 1.3 lbs

Ingersoll Rand

DEWALT DW3508 6-1/2-Inch by 1/8-Inch by 5/8-Inch A24R Abrasive Metal Cutting Wheel

DEWALT DW3508 6-1/2-Inch by 1/8-Inch by 5/8-Inch A24R Abrasive Metal Cutting Wheel

DEWALT

DEWALT 12-Inch Miter Saw Blade, Crosscutting, Tungsten Carbide, 80-Tooth and 32-Tooth, 2-Pack (DW3128P5, DW3123), yellow

DEWALT 12-Inch Miter Saw Blade, Crosscutting, Tungsten Carbide, 80-Tooth and 32-Tooth, 2-Pack (DW3128P5, DW3123), yellow

DEWALT

DEWALT Circular Saw Blade, 6 1/2 Inch, 90 Tooth, Vinyl Cutting (DW9153)

DEWALT Circular Saw Blade, 6 1/2 Inch, 90 Tooth, Vinyl Cutting (DW9153)

DEWALT

Freud D0860S Diablo 8-1/2" 60T Fine Finish Miter Saw Blade with 5/8" Arbor

Freud D0860S Diablo 8-1/2" 60T Fine Finish Miter Saw Blade with 5/8" Arbor

Diablo

Featured in Comparisons

Best Cordless Rip Saws for Portable Power

Best Cordless Rip Saws for Portable Power

roundup

Best Budget Rip Saws Under $200

Best Budget Rip Saws Under $200

roundup

DeWalt DCS391B vs SKIL 5280-01

User Reviews

Please sign in to leave a review

Sort by:

No reviews yet. Be the first to review!

4.6

(10,938 reviews)

$129.00$159.0019% off

DCS391BYellow6-1/2 inches 3 Year Limited Warranty

Circular Saws Rip Saws

✓Strong cutting depth of 2-1/8 inches at 90 degrees for its compact size

✓Compatible with all DeWalt 20V MAX batteries for ecosystem flexibility

Cons

✗Brushed motor is less efficient and durable than modern brushless alternatives
✗Lacks safety and convenience features like electric brake or LED work light
✗No dust extraction system included, leading to potential dust buildup issues
✗Underpowered compared to larger 7-1/4-inch models for heavy-duty tasks
✗Fixed speed motor lacks variable speed control for different material types

From Expert Reviews

Praised by Experts

✓High RPM of 5,150 enables fast cuts through standard 2X lumber materials
✓Compact 6-1/2-inch blade design offers better portability than full-size models
✓50-degree bevel capacity allows for versatile angled cuts on roofing and trim

Criticized by Experts

✗Brushed motor is less efficient and durable than modern brushless alternatives
✗Lacks safety and convenience features like electric brake or LED work light
✗Underpowered compared to larger 7-1/4-inch models for heavy-duty tasks

From User Reviews

Users Love

✓Lightweight portability and quick setup make it ideal for DIY projects
✓Smooth and reliable 90-degree cuts through standard 2X lumber materials
✓Compact size allows for one-handed use on ladders or in tight spaces

Users Complain About

✗Shorter battery runtime limits extended use without frequent recharging
✗Absence of electric brake and LED light raises safety and visibility concerns
✗Blade binding issues reported when cutting through dense wood materials

Expert Opinion

Professional reviewers praise the DeWalt DCS391B for its speed and portability, noting it is a top performer for maneuverability in light-to-medium tasks. However, experts consistently note that it is outpaced by brushless upgrades and recommend those models for professionals requiring sustained power and efficiency.

What Users Say

Everyday users appreciate the saw's lightweight nature and quick setup for DIY projects like decking and shelving, often praising its smooth performance on standard lumber. Common complaints focus on the lack of modern features like brakes or lights, shorter battery life, and occasional blade binding in dense wood.

Common Complaints

Shorter runtime on batteries for extended use. No brake or light leading to dust buildup and safety concerns. Blade binding in dense wood

How It Compares

vs. DeWalt DCS565B

Advantages

✓Lower price point and lighter weight for budget portability

Disadvantages

✗Brushed motor is less efficient and lacks LED light and electric brake

Choose the DCS391B for budget-conscious portability, but select the DCS565B for versatile pro use with better efficiency and safety.

vs. DeWalt DCS590B

Advantages

✓Lower price point and more compact size for tight spaces

Disadvantages

✗Significantly less cutting depth and torque compared to the full-size model

Choose the DCS391B for maneuverability in tight spaces, but select the DCS590B for heavy-duty power and deeper cuts.

Rating Trend

Rating4.6/ 5Reviews11,026+3,376 reviews -0.11

pairwise

DeWalt DCS391B vs DeWalt DCS571B

pairwise

DeWalt DCS391B vs DeWalt DWE575SB

pairwise

DeWalt DCS391B vs SKIL 5080-01

pairwise

DeWalt DCS391B vs BLACK+DECKER BDCCS20B

pairwise

DeWalt DCS391B vs BLACK+DECKER BDECS300C

pairwise

DeWalt DCS391B vs Ryobi P505

pairwise

DeWalt DCS391B vs Makita XSS02Z

pairwise

DeWalt DCS391B vs Rockwell RK3441K

pairwise

Makita 5007Mg vs DeWalt DCS391B

pairwise

DeWalt DCS391B vs Craftsman CMES510

pairwise