Can the DCD1007B replace a circular saw?

No. It drills holes up to 3/8 in in masonry and drives fasteners, but it cannot rip or crosscut lumber. You need the DCS590B or another saw for that.

Which one do I need for a deck build?

Both, in practice. The saw cuts the joists and decking; the drill drives structural screws and bores holes for bolts. If you can only buy one, start with the saw.

Do both use the same battery?

Yes. Both run on DeWalt 20V MAX batteries, and neither includes one. One XR pack and charger can serve both tools.

Is the saw worth $105 if it has no blade?

The $105.00 price is the lowest recent price, dated November 1, 2026, and the saw ships without a blade. Add the cost of a 7-1/4 in blade before comparing it to kits.

Which is better for drilling concrete?

The DCD1007B. Its hammer mode, 38,250 BPM and anti-rotation system are built for masonry; the saw has no drilling function.

Both use brushless motors and all-metal gearing where it matters. The drill's ratcheting chuck and the saw's brake are the parts that wear first, so neither clearly outlasts the other.

DeWalt 20V MAX XR Brushless Cordless Hammer Drill dcd1007b vs DEWALT 20V MAX XR Brushless Cordless 7-1/4 in. Circular Saw, Tool Only (DCS590B)

These are different tools, not substitutes: the DCD1007B is a hammer drill and the DCS590B is a 7-1/4 in circular saw. Buy the drill if you need to bore holes in concrete, masonry, wood or metal; buy the saw if you need to cut lumber, plywood or OSB. The drill is $145.00 at Walmart as of November 3, 2026, and the saw's lowest recent price was $105.00 on November 1, 2026. Both are tool-only, so budget for a 20V MAX battery and charger if you don't own them.

Ask our shopping agent