DEWALT DCS578B FLEXVOLT Circular Saw with Brake 7-1/4 Inch
- Power Source: Battery
- Capacity: 7.2 inches
- Speed: 5800 RPM
- Material: High Speed Steel
Last refreshed Aug 4, 2026 · Based on the Amazon listing and published specifications, not hands-on testing.
A capable bare-tool circular saw for owners of DeWalt's FLEXVOLT battery platform, not a starter purchase on its own.
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ASIN: B086MF32GRModel: DCS578BCategory: Saws
Overview
The DCS578B is DeWalt's 60V MAX FLEXVOLT cordless circular saw, built around a 7.25 inch blade and a brushless motor rated at 1700 watts. This is a bare tool listing (the B suffix), so no battery or charger ships with it.
Sold without a battery, it targets buyers who already own FLEXVOLT or compatible packs and want to add a full-size saw to that platform rather than buy a boxed kit. At 8.2 pounds it sits closer to a mid-size corded saw than a compact trim saw.
- 60V MAX FLEXVOLT platform
- 7.25 inch blade capacity
- 5800 RPM no-load speed
- Bare tool, battery sold separately
Who it's for
Fits contractors and serious DIYers already invested in DeWalt's 60V FLEXVOLT battery system who need cross-cutting and rip capacity close to a corded 7.25 inch saw. Not a fit for anyone starting from zero on batteries, since a compatible pack has to be added on top.
Pros and cons
- Full-size 7.25 inch cutting capacity
- Brushless motor rated for corded-like power
- Compatible with DeWalt's 60V FLEXVOLT lineup
- No battery or charger included
- At 8.2 pounds it's heavier than compact cordless saws
Performance notes
The 5800 RPM no-load speed and 1700 watt motor rating put this in line with corded saws for cut speed, and the high speed steel spec listed refers to the blade material. Real-world runtime and cut quality depend on the battery amp-hour rating paired with it, which isn't part of this listing.
Specifications
| Brand | DeWalt |
|---|---|
| Model | DCS578B |
| Dimensions & fit | |
| Item Weight | 8.2 poundshigher than 54% of 194 saws |
| Capacity & performance | |
| Capacity | 7.2 incheshigher than 63% of 55 saws |
| Speed | 5800 RPM |
| Power & efficiency | |
| Power Source | Battery |
| Voltage | 60 voltshigher than 53% of 197 saws |
| Motor Power | 1700 watts |
| Construction & materials | |
| Material | High Speed Steel |
Closest rivals on specs
Metabo HPT C3607DWA 36V MultiVolt Rear Handle Circular Saw- Voltage 60 vs 36 volts (+67%)
M18 2630-20 Cordless Circular Saw 6-1/2 Inch- Voltage 60 vs 18 volts (+233%)
- Item Weight 8.2 vs 7.28 pounds (+13%)
Makita GSR01M1 XGT 40V Max Rear Handle Circular Saw Kit- Voltage 60 vs 40 volts (+50%)
- Item Weight 8.2 vs 11.7 pounds (-30%)
Frequently asked questions
Does the DeWalt DCS578B come with a battery?
No, the B in the model number marks it as a bare tool, so battery and charger are sold separately.
What blade size does the DCS578B use?
It's built for a 7.25 inch blade, matching standard full-size circular saw blades.
What is the no-load speed of the DCS578B?
DeWalt rates it at 5800 RPM.