DEWALT DCS590B Saw Review

Our scorecard

The overall score is owner satisfaction weighted by how many reviews back it, so a high rating from few reviews counts for less. The bars below show where this model stands against the other power tools and workshop machinery we track in this category on price, popularity and size. Context, not marks against it, and our read of the data, not a lab test.

Overview

The DEWALT DCS590B runs on the widely adopted DEWALT 20V MAX battery platform and spins its metal-frame saw body at 5500 RPM. With a 4-inch cutting capacity and a scale-tipping weight of 9.88 pounds, this is a compact cordless saw suited to utility cuts, finish work, and jobs where carrying a full-size 7-1/4-inch saw is inconvenient. The motor is listed at 160 watts, which is modest compared to full-size models, so the DCS590B is best matched to moderate workloads.

Buyer demand is the strongest signal here: over 1,000 units were purchased in a single month alongside a 4.6-star rating drawn from 315 verified reviews. That combination points to a product that consistently meets expectations in the field. The alloy-free metal build suggests durability for a saw at this class.

This is a bare tool, so budget for DEWALT 20V MAX batteries and charger if you are not already on the platform. The listed specs do not include bevel capacity or blade arbor size, so verify those details against your project needs before buying.

Specifications

Performance notes

Corded-free 20V battery operation at 5500 RPM covers framing lumber, sheet goods, and trim cuts within the 4-inch capacity window. The 160-watt motor rating puts this in compact-saw territory rather than heavy-duty framing saw territory. At 9.88 pounds it is manageable for one-hand positioning on a workbench but heavier than mini circular saws in the same class.

What buyers say

Owners consistently praise the saw for its ease of use on the DEWALT 20V MAX platform and the clean cuts it delivers for the class. A recurring critique is the 4-inch blade limitation, with some buyers noting they wished they had chosen a full-size 7-1/4-inch model for heavier framing work. Battery life per charge earns mostly positive remarks when paired with higher-capacity 20V MAX packs.