Best Cordless Circular Saws for Untethered Cutting

The cordless circular saw has crossed a performance threshold in the past three years that makes it a genuine replacement for corded models in most DIY applications. Modern 18V and 20V brushless models – especially paired with high-capacity batteries – rip through sheet goods, cross-cut framing lumber, and handle outdoor projects without power cord management or proximity to an outlet. For deck builds, outdoor framing, and any project where running extension cords is inconvenient, the cordless circular saw has arrived.

The market divides into two tiers: mainstream 18V/20V models that excel for most DIY cutting, and high-power dual-battery models (Milwaukee M18 X2, Makita 36V) that approach corded performance for sustained heavy use. This guide covers both, with clear guidance on which tier you actually need.

How We Evaluate Cordless Circular Saws

Battery compatibility: Buying a cordless saw that shares batteries with your drill and impact driver makes the investment far more efficient. Prioritize saws that fit your existing battery platform.

Blade size and cut depth: Seven-and-a-quarter-inch is the standard for full-depth cuts through 2x lumber. Six-and-a-half-inch models are lighter but limit bevel cut depth. Cordless saws are more commonly available in 6-1/2-inch than their corded counterparts – a trade-off worth understanding before buying.

Battery capacity impact: A 2.0Ah battery gives you 30–40 cuts in 2x lumber. A 5.0Ah battery triples that. For extended work sessions, a 5.0Ah or larger battery is effectively mandatory. Smaller batteries are fine for occasional cuts – not for building a deck.

Electric brake: Stops the blade within 2 seconds of trigger release. Not universal in cordless models – always confirm it’s present. It’s a safety feature that matters every time you set the saw down.

Base plate material: Magnesium or aluminum bases stay flat, register well on material, and resist damage from drops better than stamped steel bases. Cheaper cordless saws often use stamped steel – a real accuracy limitation.

Top Picks

1. Milwaukee M18 FUEL 2732-20 – Best Cordless Circular Saw

The M18 FUEL 7-1/4-inch circular saw with a 12.0Ah HIGH OUTPUT battery delivers performance that professional framers trust for full days of cutting. The POWERSTATE brushless motor doesn’t fade across a 5.0Ah battery charge, the magnesium base stays perfectly flat, and the electric brake stops the blade in under 2 seconds. Compatible with all M18 batteries, though the HIGH OUTPUT batteries deliver significantly better sustained performance than standard M18 cells.

At $249 tool-only or $349–$399 as a kit, it’s priced for the serious DIYer who builds decks, frames additions, and makes a lot of cuts. For occasional use, the price is hard to justify – consider the RYOBI or DeWalt at lower price points instead.

• Pros: Best cordless performance, 7-1/4 inch blade, no performance fade, magnesium base, electric brake
• Cons: High price, requires HIGH OUTPUT battery for best performance (expensive cells)
• Price range: $249 (tool only) / $349–$399 (kit)

2. DeWalt DCS574B – Best 7-1/4-Inch Runner-Up

DeWalt’s 20V MAX XR brushless 7-1/4-inch circular saw is slightly lighter than the Milwaukee and delivers nearly identical performance in most DIY cutting tasks. Its 460 MWO motor handles framing lumber, plywood, and OSB without the voltage sag that plagued earlier cordless saws. The precision rear handle design gives excellent control, and the 57° bevel capacity is among the best in the cordless category. At $179–$199 (tool only), it’s the premium DeWalt choice for serious cutting.

• Pros: 57-degree bevel, lightweight, excellent precision handle, DeWalt 20V compatible
• Cons: Slightly less sustained power than Milwaukee under heavy load
• Price range: $179–$199 (tool only)

3. Makita XSH06Z (18V X2) – Best for Heavy Cutting

When you need cordless performance closest to corded for sustained cuts through LVL beams and thick hardwood, Makita’s 18V X2 (36V) circular saw is the answer. Two 18V LXT batteries in series drive the brushless motor with power that genuinely rivals corded 15-amp saws for most cuts. The 7-1/4-inch blade, magnesium base, and 6.5 lbs without batteries make it a capable machine for serious work. For heavy LXT users, this is the saw to own.

• Pros: Dual-battery 36V power, closest to corded performance, magnesium base, LXT compatible
• Cons: Requires two 18V batteries, heavier total weight, expensive tool-only
• Price range: $229–$279 (tool only)

4. RYOBI PBLCS300B – Best Budget Cordless 7-1/4

RYOBI’s ONE+ HP 18V brushless 7-1/4-inch circular saw at $99–$119 (tool only) is the best value in cordless circular saws. The brushless motor extends runtime meaningfully over older brushed RYOBI saws, the electric brake is present, and the stamped steel base – while not as stiff as magnesium – performs adequately for most DIY cuts. For occasional deck boards, OSB cuts, and general lumber work, it’s an excellent tool at a surprising price.

• Pros: Best price for brushless cordless, 7-1/4 inch blade, electric brake, ONE+ compatible
• Cons: Stamped steel base flexes under hard lateral pressure, limited sustained cutting performance
• Price range: $99–$119 (tool only)

5. Milwaukee M12 2530-20 – Best Compact Cordless Saw

When you need a compact cordless saw for small material cutting – trim, thin plywood, finish carpentry in tight spaces – Milwaukee’s M12 FUEL 5-3/8-inch circular saw at $99–$119 (tool only) is the right tool. The 5-3/8-inch blade cuts 1-11/16-inch deep at 90° – enough for 1x material and thin sheet goods. It’s not a framing saw; it’s a precision compact saw for finish work and tight-space install cutting.

• Pros: Ultra-compact, M12 compatible, great for install and finish cutting, lightweight
• Cons: Limited cut depth – not for 2x lumber or heavy material, 5-3/8-inch blade limits accessory selection
• Price range: $99–$119 (tool only)

FAQ

How long does a battery last on a cordless circular saw?

A 5.0Ah battery typically gives 80–120 cuts through 2x lumber before needing a charge. A 2.0Ah battery gives approximately 30–40 cuts. For a full day of framing, you need at least two 5.0Ah batteries rotating through the charger. Milwaukee and DeWalt’s rapid chargers refuel a 5.0Ah battery in approximately 45–55 minutes.

Is a cordless circular saw as good as a corded one?

For most DIY tasks – building decks, crosscutting lumber, cutting sheet goods – modern brushless cordless saws perform equivalently to corded models. The gap shows up during sustained heavy cutting: ripping long boards repeatedly, cutting through LVL and PSL beams, or making hundreds of cuts per day. For occasional projects, cordless is the better choice. For production cutting all day, a corded saw still wins.

Should I buy a 6-1/2-inch or 7-1/4-inch cordless saw?

For cutting 2x framing lumber at 90° and 45° bevel, you need the 7-1/4-inch blade’s cut depth. A 6-1/2-inch blade cuts through 2x at 90° but barely clears 45° on 2x stock, and can’t handle stacked or doubled material. If you’re doing any structural framing or deck building, buy the 7-1/4-inch. The 6-1/2-inch suits sheet goods, trim, and non-structural cutting.

Bottom Line

The Milwaukee M18 FUEL 2732 is the best cordless circular saw for serious DIYers and contractors who need sustained performance – its no-fade POWERSTATE motor is the standard by which others are judged. DeWalt 20V platform users get nearly equivalent performance with the DCS574B at a lower tool-only price. RYOBI ONE+ users doing occasional cutting will be well-served by the brushless PBLCS300B at the best price point in this category. Budget a 5.0Ah battery regardless of which saw you choose – it makes a dramatic difference in usable runtime.