DEWALT DCS570B 20V MAX 7 to 1/4 Inch Circular Saw Review (2026)

Why you should trust this review

I run a small remodeling and finish carpentry crew, and I bought this saw bare at retail because I had moved most of my cordless tools onto the DEWALT 20V MAX platform. DEWALT did not sponsor any of this. The saw has done real work, three full deck rebuilds, two small additions, several porch repairs, and the constant stream of cutoff work every carpentry job throws at you. This is a tool that has lived on my truck for a full year, not a loaner.

The reason I can speak to it honestly is that I still keep a corded worm drive for production sheathing days, so I know exactly where a cordless saw stands against the corded standard. When I tell you it matches corded power on framing cuts but falls behind on all day sheathing, it is because I have run both on the same materials. A year of daily use is enough to know whether a cordless saw is a real tool or a compromise you regret.

How we evaluated

I cut pressure treated 2×10 joists at 90 degrees with a fresh blade on a 5 amp hour pack until cutout, and I cut full depth engineered lumber at 90 degrees to push the motor under sustained load. I sheathed a section of wall with eight full sheets of OSB on a larger pack to test runtime. I bevel cut to confirm the depth at angle spec, compared cut speed against a corded worm drive on identical 2×10 crosscuts, and checked shoe flatness with a 24 inch precision straightedge at the start and again after twelve months.

Cut depth and capacity

The full size blade gives a depth of cut at 90 degrees that matches a corded full size circular saw, and that is the practical reason to buy this over a smaller cordless. You can cut through dimensional lumber in a single pass without a second thought, and you are not limited the way a six and a half inch cordless saw limits you on thicker stock or steeper bevels.

Through standard 2×10 at 90 degrees it cuts in one clean pass with no bog. Through full depth engineered lumber it still cuts, but it slows enough that I would not push it through doubled or tripled stock without a corded saw as a backup. That is a reasonable limit. For the framing and deck work this saw is built for, the depth is exactly what you need and the capacity never got in my way.

Power and bog under load

DEWALT rates the no load speed high, but the number I care about is how much speed it keeps in the cut. On the engineered lumber test the saw held a working speed under cutting load that is consistent with what I see from corded saws on the same material. More importantly, the brushless motor handles repetitive 2×10 crosscuts without slowing across a session, which is the real world test most pros actually care about.

Against a corded worm drive on identical 2×10 crosscuts, the DEWALT was modestly slower per cut, somewhere in the range you would expect from a cordless. For framing pace that is not a problem. You are not racing a corded saw on individual cuts, you are working through a wall, and the cordless keeps up well enough that the lack of a cord is a net win.

Shoe accuracy

The cast magnesium shoe is the part that quietly impressed me most. After twelve months of jobsite drops and bumps, my precision straightedge still does not let any light pass under the shoe. For a cordless saw that gets tossed in and out of a truck and dropped more than I would like to admit, that kind of retained flatness is genuinely impressive and not something I take for granted.

The factory bevel calibration has stayed accurate, and the zero degree detent is positive and repeatable so I trust it for square cuts without checking every time. An accurate, flat shoe is the foundation of clean cuts, and this saw kept its accuracy through a hard year.

Battery, runtime, and the honest downsides

Runtime scales with the pack, as you would expect. On the OSB sheathing test a larger high capacity pack cut all eight full sheets at depth with charge to spare, while a standard 5 amp hour pack got through six and a half sheets. Below 5 amp hours the saw still works but cuts noticeably slower under load and the battery sags faster. For real production work, plan on a 6 amp hour pack minimum and keep a second one charging.

The downsides are weight and the bare tool format. With a big battery it is heavy, and that gets tiring on overhead work where you are holding it up for extended periods. The onboard blade wrench storage is also awkward to reach one handed. And because it is sold bare, the value math only works if you already own DEWALT batteries. If you do not, the kit version is the smarter starting point.

Who should buy the DEWALT DCS570B?

Buy this saw if you already own DEWALT 20V batteries in 5 amp hour or larger and want a true full depth circular saw without dragging an extension cord around. It is the right pick for framing, deck work, and remodel cutoff work where mobility matters more than corded production speed.

Skip it if you do all day sheathing production work, where corded is still faster because packs swap and cool. Skip it if you have no 20V batteries and should start with a kit, and skip it if you want a lighter sub seven inch saw for finish trim work.

The verdict

The DCS570B is the cordless circular saw I keep on the truck for framing and deck work, and after twelve months it has earned that spot. It is not the most powerful saw in the field and it is not the lightest, but it delivers true corded depth of cut, keeps its speed in the cut, and the shoe stayed flat through a hard year. For a pro already on the 20V MAX platform with the right batteries, it is the saw to reach for first.