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Shoppers looking for a dewalt 20v max circular saw usually want one thing: a cordless saw that cuts cleanly through framing lumber, plywood and decking without tying them to an extension cord. DeWalt’s 20V MAX platform is built around a shared battery system, so the right saw depends on how much cutting you do, how deep your typical cuts go, and whether you already own DeWalt batteries. The selection criteria below focus on blade size and maximum cutting depth, brushless versus brushed motors, battery compatibility, weight, and the features that affect accuracy, such as bevel adjustment and blade visibility. Everything here is based on manufacturer specifications, brand reputation and common owner feedback, not on personal testing.
Our Top Picks
Quick Comparison
| Product | Best for | Key feature |
|---|---|---|
| DeWalt DCS573B 20V MAX Brushless 7-1/4 in. Circular Saw | Framing and heavy daily use | Brushless motor with a high-cut-depth design |
| DeWalt DCS565B 20V MAX Brushless 6-1/2 in. Circular Saw | Lighter jobs and trim work | Compact, lightweight body |
| DeWalt DCS391B 20V MAX Brushed 7-1/4 in. Circular Saw | Budget-minded buyers on a tight budget | Straightforward, no-frills design |
| DeWalt DCS570B 20V MAX Brushless 6-1/2 in. Circular Saw | Sheet goods and general contracting | Brushless power with a magnesium shoe |
| DeWalt DCS577X1 FLEXVOLT 60V MAX 7-1/4 in. Circular Saw | Heavy cutting and users who want more runtime | FLEXVOLT battery compatibility |
DeWalt DCS573B 20V MAX Brushless 7-1/4 in. Circular Saw
This is the saw most people reach for when they want full-depth cuts through 2x lumber with a cordless tool. It suits framers, remodelers and anyone who runs a saw most days and wants brushless efficiency for longer battery life.
Key specs
- Blade diameter: 7-1/4 in.
- Motor: brushless, 20V MAX
- Battery: DeWalt 20V MAX lithium-ion (sold separately in most kits)
- Bevel adjustment: left-side bevel range up to 56 degrees per manufacturer listing
Pros
- Brushless motor generally delivers better runtime per charge than brushed designs.
- Full 7-1/4 in. blade capacity handles standard framing depth.
- Works with the full DeWalt 20V MAX battery lineup.
Cons
- Heavier than the 6-1/2 in. models, which can tire your arm on overhead cuts.
- Battery and charger are typically purchased separately unless you buy a kit.
DeWalt DCS565B 20V MAX Brushless 6-1/2 in. Circular Saw
A good match for trim work, cutting cabinet panels and carrying a saw around a job site all day. Buyers who mostly make shallower cuts and value a lighter tool often prefer this size.
Key specs
- Blade diameter: 6-1/2 in.
- Motor: brushless, 20V MAX
- Battery: DeWalt 20V MAX lithium-ion
- Typical use: trim, panels, shallow cuts
Pros
- Lighter weight reduces fatigue on repetitive cuts.
- Smaller blade makes it easier to fit into tight spaces.
- Brushless motor shares batteries with the rest of the 20V MAX line.
Cons
- Maximum cutting depth is shallower, so 2×6 and thicker stock may need two passes.
- Not the best choice if most of your work is full-depth framing.
DeWalt DCS391B 20V MAX Brushed 7-1/4 in. Circular Saw
Aimed at budget-minded buyers who want a cordless 7-1/4 in. saw for occasional home projects, such as deck boards, fence pickets or a few framing cuts. Owners who run the saw only a few times a month often find brushed motors adequate.
Key specs
- Blade diameter: 7-1/4 in.
- Motor: brushed, 20V MAX
- Battery: DeWalt 20V MAX lithium-ion (sold separately in most listings)
- Design: straightforward controls, no brushless electronics
Pros
- Lower-cost entry point into the 7-1/4 in. DeWalt 20V MAX range.
- Full-size blade capacity for common lumber dimensions.
- Simple design means fewer parts to think about.
Cons
- Brushed motors generally run hotter and deliver less runtime than brushless equivalents under sustained load.
- Less suited to all-day production framing.
DeWalt DCS570B 20V MAX Brushless 6-1/2 in. Circular Saw
This model is often recommended for sheet goods and general contracting work, where a magnesium shoe and steady base help keep long rip cuts on plywood and OSB accurate. It works well for anyone breaking down 4×8 sheets regularly.
Key specs
- Blade diameter: 6-1/2 in.
- Motor: brushless, 20V MAX
- Shoe: magnesium base (per manufacturer description)
- Battery: DeWalt 20V MAX lithium-ion
Pros
- Brushless power suits repeated sheet-goods cutting.
- Magnesium shoe offers a stable, durable cutting surface.
- Good balance between control and weight for ripping plywood.
Cons
- 6-1/2 in. blade limits depth for thick framing stock.
- Owners who want a full 7-1/4 in. capacity will need a different model.
DeWalt DCS577X1 FLEXVOLT 60V MAX 7-1/4 in. Circular Saw
This saw is aimed at heavier cutting where the standard 20V MAX batteries may feel limiting. DeWalt’s FLEXVOLT batteries automatically switch to a higher voltage in compatible tools, and this model is designed to take advantage of that for demanding, full-depth work.
Key specs
- Blade diameter: 7-1/4 in.
- Platform: FLEXVOLT 60V MAX (compatible FLEXVOLT batteries required for higher-voltage operation)
- Battery: FLEXVOLT lithium-ion (sold separately in most listings)
- Also runs on standard 20V MAX batteries in compatible configurations, per manufacturer notes
Pros
- Higher-voltage capability suits heavy, sustained cutting.
- Full 7-1/4 in. blade capacity.
- Good option if you already own FLEXVOLT batteries.
Cons
- FLEXVOLT batteries are generally heavier and pricier than standard 20V MAX packs.
- Overkill for light home use where a standard 20V saw is sufficient.
Buying Guide
Choosing a dewalt 20v max circular saw comes down to a few practical questions: how deep you need to cut, how often you cut, whether you already have batteries, and how much weight you can comfortably hold. Start with the blade size, because it sets your maximum cutting depth more than any other spec.
Selection Criteria
- Blade diameter: 7-1/4 in. is the standard for framing and full-depth 2x cuts. 6-1/2 in. is lighter and suits trim, panels and shallow work.
- Motor type: Brushless motors generally offer better efficiency and longer runtime than brushed motors.
- Battery platform: Staying within the 20V MAX family lets you share batteries and chargers with drills, impact drivers and other tools.
- Weight and balance: A heavier saw cuts more stably, but lighter saws reduce fatigue on overhead and repetitive work.
Important Features
Look for a clear blade view, a smooth bevel adjustment that locks firmly, a depth adjustment with positive stops, and a shoe that resists flexing. A magnesium or aluminum base generally holds up better to repeated use than thin stamped steel. A built-in dust port is useful if you cut indoors or on finished surfaces.
Specs to Check
- Maximum cutting depth at 90 degrees and at 45 degrees (the manufacturer’s specification sheet lists both).
- No-load speed (RPM), which affects cut quality in hardwoods.
- Bevel range, usually up to 56 degrees on full-size models.
- Battery compatibility and whether a battery and charger are included.
Choosing by Need
- Framing and daily production: Choose a brushless 7-1/4 in. model.
- Trim, cabinets and tight spaces: Choose a 6-1/2 in. saw.
- Occasional home projects: A brushed 7-1/4 in. model can be adequate.
- Heavy cutting or existing FLEXVOLT batteries: Consider the FLEXVOLT model.
Things to Watch Out For
- Check whether the listing includes a battery and charger. Many circular saw listings are bare-tool only.
- Do not assume a 6-1/2 in. saw can make full-depth 2x cuts. Confirm the depth spec.
- Keep blades sharp and matched to the material. Dull blades cause burning, kickback and rough edges.
- Always follow the manufacturer’s safety instructions and use the guard. If you are unsure about a cutting setup, consult a professional.
For deeper background, see Circular Saw Buying Guide: Corded, Cordless, Sidewinder or Worm Drive and 12V vs 18V/20V Max vs Higher-Voltage Cordless Tools.
FAQ
Is the DeWalt 20V MAX circular saw good for framing?
Yes, the 7-1/4 in. models are generally the better choice for framing because they can make full-depth cuts through standard 2x lumber. Brushless versions are typically recommended for repeated framing work.
Does a 20V MAX saw use the same batteries as other DeWalt tools?
Yes. DeWalt 20V MAX tools share the same lithium-ion battery platform, so one battery can power drills, impact drivers, saws and other compatible tools.
What is the difference between brushed and brushless?
Brushless motors use electronic commutation instead of carbon brushes. Manufacturers generally describe them as more efficient, with longer runtime and less maintenance than brushed motors.
Can a 6-1/2 in. saw cut a 4×4 post?
Generally no. A 6-1/2 in. blade does not reach full depth through a 4×4, so a 7-1/4 in. saw or a different cutting method is needed. Check the depth spec before buying.
Do I need a FLEXVOLT battery for this saw?
Not necessarily. The FLEXVOLT model is designed to take advantage of FLEXVOLT batteries, but compatible 20V MAX configurations may also work, according to manufacturer notes. Confirm compatibility with the specific model before buying.
What blade should I use?
Match the blade to the material. A higher tooth count gives smoother cuts in plywood and trim, while a lower tooth count clears material faster in framing lumber. See Saw Blades: Tooth Count, Kerf and Grind for Circular, Miter and Table Saws for more detail.
How do I cut straight with a cordless circular saw?
Use a straightedge or guide, keep the shoe firmly against the material, and let the blade reach full speed before cutting. For a step-by-step method, see How to Cut Straight with a Circular Saw.
Conclusion
For most buyers searching for a dewalt 20v max circular saw, the 7-1/4 in. brushless DCS573B is the most versatile pick, covering framing and general construction. Choose the 6-1/2 in. DCS565B or DCS570B if you mainly make shallower cuts or work with sheet goods and want a lighter tool. The brushed DCS391B suits occasional home projects on a tighter budget. If you already own FLEXVOLT batteries or handle heavy, sustained cutting, the DCS577X1 is worth a look. Compare blade depth, battery compatibility and motor type against the work you actually do, and you will end up with the right saw for your needs.
