Best 7 1/4-Inch Cordless Circular Saws Ranked: Five Heavy Hitters Put to the Test

Introduction

The 7 1/4-inch cordless circular saw category has quietly become one of the most competitive corners of the power tool market. After earlier head-to-head testing on one side of the bracket, we set out to fill in the other side with what are arguably the most powerful saws on the market right now: the Milwaukee M18 Fuel 2732, the Flex FX2141-1J, the DeWalt FlexVolt DCS578X1, the DeWalt FlexVolt Advantage, and the Makita XGT circular saw that held the top spot going in.

How We Ranked These Saws

Every saw went through the same battery of tests. First, speed under load: the saw makes a common two-by-style cut while we measure blade RPM, which roughly represents how much cutting time you save over a workday. Second, ultimate power output, measured on a dyno by loading each saw until it bogs down and cuts out. Third, cut depth at 90 and 45 degrees, where the DeWalt models perform well in this crowd. Fourth, noise, where the spread is narrow at 91 to 93 dB at one meter, so it is unlikely to make or break a purchase. Finally, runtime: each saw runs under a fixed 200 W load on an equivalent battery capacity, and we tally the total revolutions, which represent a fixed amount of wood cut through.

Weight was also factored in, and it is where these top-tier saws pay a tax up front before clawing points back in performance.

Milwaukee M18 Fuel 2732-21HD

The Milwaukee 2732 M18 Fuel is a 7 1/4-inch blade-right circular saw, and its kit model 2732-21HD bundles it with the big HD 12.0 battery, which is exactly the battery this tool is built around. That combo cost about $420 at the time of purchase, and it shows in the weight: 12.2 lb, the heaviest of everything tested at that point.

Performance earns that weight back. It posted 5,835 RPM under load, topping the Makita XGT that previously held the speed crown. Milwaukee’s newer Forge pouch cell 6 A battery shaves just over a pound off the combo, costs about the same or up to $50 less if you are buying everything at once, and nudges the speed to 5,880 RPM. On the dyno, the saw delivered 1,200 watts, improving slightly to 1,210 watts with the Forge battery.

Runtime is this saw’s strong suit. It is the most efficient saw tested, running 14.5 minutes under the fixed load and completing 83,000 revolutions, meaning more actual work done per charge than any competitor here. Among 18-volt tools, it is the top scorer, beating out plenty of 36- and 40-volt options.

Flex FX2141-1J

Flex is another brand offering pouch cell batteries, and the FX2141-1J kit comes with a 10 A stacked lithium battery that is known as a bit of a monster, capable of boosting many 18-volt tools significantly. This is also the heaviest saw here at 12.3 lb.

The weight buys serious performance. Under load it is basically unfazed, holding 5,945 RPM, the highest speed figure recorded. On the dyno it produced 1,360 watts with a 6 Ah stacked lithium pack, and a staggering 1,520 watts with the 10 Ah pack, which works out to roughly 2,200 watts at the saw based on available efficiency curves. That puts it well beyond what a corded 15-amp saw delivers at the blade, since those turn wall power into only about 900 watts at the dyno.

The trade-off is efficiency. On a normalized 8 Ah equivalent battery, it runs out first at about 11 minutes. Mega power, short runtime, and very high RPM are the pattern here.

Makita XGT Circular Saw

The Makita XGT entered this comparison as the previous top-ranked saw in the category, and it still holds up well. It previously set the benchmark for speed under load before Milwaukee edged past it, and it posted a solid 1,200-watt-class power output on the dyno.

Runtime is respectable at 13 minutes under the fixed load, not far behind the leader. It is not the lightest or the cheapest option in this group, but it remains a complete, high-performance package that only lost ground because the competition brought bigger batteries and sharper pricing.

DeWalt FlexVolt DCS578X1

The DCS578X1 is DeWalt’s highest-spec 7 1/4-inch circular saw, a true 60-volt FlexVolt tool, and the kit includes the 9 Ah FlexVolt battery. That pack uses different 21700 cells for less capacity but higher discharge output, and it may be the best battery the brand makes. At $340 as a kit, it was the lowest-cost new addition in this comparison, and the 9 Ah pack alone typically sells for well over $200.

It posted 5,750 RPM under load, quick but not record-setting. Then the dyno told a different story: 1,540 watts, the highest figure recorded, using the same battery you might power a 20-volt leaf blower with. It is simply an animal that refuses to bog down no matter how hard you push it. Runtime came in at 12.5 minutes on a normalized basis, with 72,000 revolutions, helped by DeWalt’s excellent behavior of holding speed and performance steady as the battery drains.

DeWalt FlexVolt Advantage

The FlexVolt Advantage is the 20-volt sibling in this lineup, running on the same batteries as the DCS578X1. A kit costs roughly $10 less than its 60-volt brother, putting it around $330. It also excels at cut depth at both 90 and 45 degrees alongside the other DeWalt in this crowd.

In performance testing it held its own, with dyno output that actually beat the Makita XGT in our testing. Runtime came in at 13 minutes, and while its lower power ceiling means it does fewer revolutions per charge than the 60-volt model, it remains a strong performer and, oddly, has recently been priced higher as a bare tool than the DCS578X1, which makes the FlexVolt kit the clearly better buy right now.

Buying Advice: Which Saw Should You Get?

The totals put the DeWalt FlexVolt DCS578X1 in first place, with the Flex not far behind, mainly on price and runtime weighting. The Milwaukee stands as the top 18-volt tool, thanks to its class-leading efficiency and runtime.

If you already own red (Milwaukee) or gray (Flex) batteries, those brands’ saws are excellent buys within your platform. But if you were ever considering a yellow tool, the DCS578X1 at $340 as a kit is a genuinely rare deal: the included 9 Ah FlexVolt battery alone is worth most of that price, those batteries also power DeWalt’s 20-volt tools, and even the smaller 6 Ah FlexVolt still delivers enough output for second place on the dyno. For most buyers, this is the one to get.

Conclusion

This corner of the circular saw market is brutally competitive, and every saw here is capable. The DeWalt FlexVolt DCS578X1 wins on raw power and price, the Milwaukee M18 Fuel leads on runtime and efficiency, the Flex delivers monster output if you can live with shorter runtime, and the Makita XGT and FlexVolt Advantage round out a field where there are no bad choices, only different strengths.