Milwaukee vs DeWalt Circular Saws: 2026 Contractor Comparison
Walk any framing job and you'll see Milwaukee red and DeWalt yellow side by side. Both brands make cordless 7-1/4" circular saws that will cut framing lumber all day — so the choice between them comes down less to raw power and more to battery platform, price, and features.
This comparison puts two widely available saws head to head: the Milwaukee M18 Brushless 7-1/4" (2631-20) and the DeWalt FLEXVOLT 60V MAX (DCS578B). Every spec comes from the manufacturers' listings.
Our verdict: For most contractors starting fresh, the DeWalt DCS578B is the more powerful saw for the money. But if you already own Milwaukee M18 tools and batteries, the M18 Brushless is the smarter buy — battery platform should drive this decision more than any single spec.
Milwaukee M18 Brushless 7-1/4" Circular Saw (2631-20)
Milwaukee M18 Brushless 7-1/4 Inch Circular Saw, Tool Only (2631-20)
A brushless M18 7-1/4 inch saw with magnesium upper and lower guards, electric brake, LED, integrated dust port, and rafter hook.
$202.40
View on AmazonMilwaukee's M18 Brushless 7-1/4" saw runs on the same M18 batteries as Milwaukee's drills, impacts, and grinders. It has magnesium upper and lower guards to keep weight down and stand up to jobsite abuse, plus an electric brake, LED, integrated dust port, and rafter hook. It has more than 1,000 reviews averaging 4.6 stars.
Milwaukee's top-of-the-line M18 FUEL 7-1/4" saw has more power, but it's currently hard to find new on Amazon, so this is the Milwaukee saw we can recommend buying today.
The Bad: It's not Milwaukee's most powerful saw, so heavy ripping in wet or engineered lumber will push it harder than the FLEXVOLT DeWalt. Run it on a high-output M18 battery (6.0Ah or larger) for framing. Tool only.
DeWalt FLEXVOLT 60V MAX Circular Saw (DCS578B)
DEWALT FLEXVOLT 60V MAX Circular Saw with Brake, 7-1/4-Inch, Tool Only (DCS578B)
DeWalt's 60V FLEXVOLT 7-1/4 inch saw with an electric brake, 57-degree bevel capacity, LED, and rafter hook -- built to replace a corded saw on framing jobs.
$189.00
View on AmazonThe DCS578B runs on DeWalt's 60V FLEXVOLT batteries, and DeWalt rates it at up to 47% more power than its earlier DCS575 FLEXVOLT saw. It cuts 2-9/16" deep at 90°, bevels to 57° with stops at 22.5° and 45°, and has an electric brake, LED, and rafter hook. With more than 1,400 reviews averaging 4.7 stars, it's one of the best-reviewed cordless framing saws on Amazon — and at about $189 tool only, it's also the cheaper of the two.
The Bad: It needs FLEXVOLT 60V batteries, which cost more than standard 20V MAX packs. If you're on DeWalt 20V MAX and don't own FLEXVOLT batteries, look at the 20V DCS590B instead. With a big FLEXVOLT pack it's also a heavy saw to run overhead all day. Tool only.
| Feature | Milwaukee M18 Brushless (2631-20) | DeWalt FLEXVOLT (DCS578B) |
|---|---|---|
| Battery platform | Milwaukee M18 | DeWalt FLEXVOLT 60V MAX |
| Motor | Brushless | Brushless |
| Electric brake | Yes | Yes |
| Guards | Magnesium upper and lower | Not specified in listing |
| Max bevel | Not specified in listing | 57 degrees, stops at 22.5 and 45 |
| LED and rafter hook | Yes | Yes |
| Amazon rating | 4.6 stars, 1,000+ reviews | 4.7 stars, 1,400+ reviews |
| Tool-only price | About $202 | About $189 |
How to Choose
Battery platform comes first. Batteries cost more than the saw. If you already have a bag full of M18 batteries, the Milwaukee is the obvious choice. If you're on DeWalt and own FLEXVOLT packs, the DCS578B is.
Starting fresh? The DeWalt DCS578B gives you more power for less money, and FLEXVOLT batteries also run DeWalt's 20V MAX tools. That flexibility makes it the stronger starting point for a framing crew.
Already on DeWalt 20V MAX but no FLEXVOLT? Consider the DeWalt DCS590B 20V MAX XR — DeWalt's most powerful 20V circular saw, rated at up to 1,700 max watts out — instead of buying into FLEXVOLT.
Blade and Maintenance Tips
- Upgrade the blade. The stock blade is fine for rough framing but dulls fast in pressure-treated lumber. A quality framing blade makes a bigger difference than the motor. Both saws take standard 7-1/4" blades, so there's no brand lock-in.
- Keep the shoe and bevel mechanism clean. Resin and sawdust buildup around the bevel adjustment can cost you accuracy. Compressed air and a rag every few weeks during heavy framing is enough.
- Standardize across your crew. A crew running one battery platform carries one set of batteries and chargers, which matters more than small performance differences between the saws.
Bottom Line
Buy the saw that matches the batteries already in your bag. If you're on Milwaukee, the M18 Brushless 2631-20 is a solid, proven framing saw. If you're on DeWalt — or starting fresh and want the most power for the money — the DeWalt FLEXVOLT DCS578B is our pick. For a wider look across Makita and Ryobi too, see our best cordless circular saws guide.
