WORX WX520.9 Review

Cutting a straight line through a full sheet of plywood, ripping treated timber to width for a decking project, or cross-cutting a stack of floorboards to length — these are the everyday tasks that separate a cordless circular saw from being a nice-to-have and being genuinely essential. A quality circular saw gives you the speed and accuracy of a table saw with the portability of a hand tool, letting you take the tool to the material rather than wrestling heavy boards onto a stationary machine. Modern brushless cordless saws have closed the performance gap with their corded cousins, delivering enough power and runtime to complete a full day of cutting on a couple of battery swaps. For carpenters, deck builders, kitchen fitters, and serious DIYers who value both mobility and precision, a well-designed cordless circular saw with a full-size blade and a solid depth-of-cut is the tool that turns a stack of timber into a finished project faster than any other single saw in the arsenal.

When evaluating a cordless circular saw, blade diameter and cutting depth are the first numbers to check. A 190 mm blade — the standard full-size format — delivers a cutting depth of around 65 to 70 mm at 90 degrees, which is enough to slice through a 50 mm worktop or two stacked sheets of 18 mm plywood in a single pass. Motor type matters enormously: brushless motors are more efficient than brushed equivalents, converting more of the battery's energy into blade rotation rather than heat, which translates to more cuts per charge and a motor that lasts significantly longer. Other key features include bevel capacity for angled cuts, a spindle lock for easy blade changes, and a parallel guide for repeatable rip cuts. WORX, through their PowerShare battery platform, offers interchangeable 20V batteries across a range of tools and garden equipment, making their ecosystem an appealing choice for users building a multi-tool collection on a single battery platform.

This review examines the WORX WX520.9, a 20V brushless cordless circular saw with a 190 mm blade, 67.5 mm maximum cutting depth, and a bevel range of up to 57 degrees. We assess the cutting power and runtime, the accuracy of the depth and bevel adjustments, ergonomics and weight balance, the included accessories, and how it fits into the broader WORX PowerShare ecosystem. If you need a cordless circular saw that handles the majority of carpentry and construction cuts without tying you to a power outlet, this evaluation covers the details that matter.

The WORX WX520.9 is a 20V cordless circular saw powered by a brushless motor that spins a 190 mm TCT blade at up to 6,100 RPM no-load speed. The brushless technology is the headline engineering feature — WORX claims up to 50% more runtime and 25% more power compared to an equivalent brushed motor, plus a motor life roughly ten times longer. In practical terms, this means you get more cuts per battery charge, the saw maintains speed better under load when ripping through dense hardwood, and there are no carbon brushes to wear out and replace after years of use. The cutting depth at 90 degrees is 67.5 mm — enough to cut through a standard 63 mm CLS timber stud or a 50 mm kitchen worktop — dropping to 47.5 mm at a 45-degree bevel.

The bevel mechanism is one of the WX520.9's practical strengths. It adjusts from 0 to 57 degrees with clear markings at the common 22.5, 45, and 50-degree stops, and the pivot feels smooth with minimal play. A 57-degree maximum bevel is slightly beyond the typical 45 to 50 degrees found on many circular saws, giving extra flexibility for compound mitre cuts in trim and fascia work. The cutting depth adjustment is also tool-free and smoothly graduated — a lever unlocks the base plate, you slide it to the desired depth against a marked scale, and lock it back. A spindle lock button holds the blade still while you loosen the arbour nut with the included hex key, making blade changes a one-tool operation.

Ergonomically, the WX520.9 balances its 2.9 kg weight well between the main grip and the front 辅助 handle area. The overmoulded rubber grip provides a secure hold, and the trigger placement feels natural for both right-handed and — importantly — left-handed users, as the saw's body design does not obstruct the cut-line sight window from either side. An LED work light illuminates the cut line, which proves useful when working in garages, under eaves, or in other dimly lit conditions where pencil marks disappear into shadow. The electric brake stops the blade within a couple of seconds of releasing the trigger — a safety feature that prevents the spinning blade from catching on the workpiece or the work surface when you set the saw down between cuts.

The saw ships as a bare tool — no battery or charger — following the PowerShare ecosystem model that keeps the tool price accessible for users who already own WORX 20V batteries. The included accessories are practical: a 24-tooth TCT blade for wood, a parallel rip guide for repeatable straight cuts, a vacuum adapter that connects to standard workshop extraction hoses, and a hex key for blade changes. The PowerShare platform is one of the more versatile battery ecosystems — the same 20V batteries power WORX drills, impact drivers, angle grinders, garden tools, and even can be combined in pairs to run 40V tools or in fours for 80V equipment, giving a genuine upgrade path as your tool collection grows.

The WX520.9 holds a strong 4.5 out of 5 stars average from nearly 1,000 customer ratings and ranks #8 in Circular Saws on Amazon — impressive metrics that indicate widespread user satisfaction with both cutting performance and reliability. At approximately €142 for the bare tool, it competes directly with brushless saws from RYOBI, Einhell, and other mid-tier brands, while undercutting premium professional saws from DeWalt and Makita by a significant margin. WORX provides a 2-year warranty extendable to 5 years with registration — among the longest in the DIY power tool market — which substantially de-risks the purchase. For a user building a PowerShare collection or looking for a capable brushless circular saw without the premium-brand price tag, the WX520.9 delivers strong value backed by an unusually generous warranty.

The WORX WX520.9 is ideal for carpenters, deck builders, kitchen fitters, and serious DIY renovators who want a brushless cordless circular saw with full-size cutting capacity and the flexibility of the PowerShare battery ecosystem.