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Ryobi P506 One+ Lithium Ion 18V 5 1/ vs WORKPRO 20V Cordless Mini Circular Saw, 4-1/2"

Updated July 2026 — Ryobi P506 One+ Lithium Ion 18V 5 1/ wins on rpm and blade size, WORKPRO 20V Cordless Mini Circular Saw, 4-1/2" wins on price and battery.

The Ryobi P506 offers great value for budget-conscious users, while the WORKPRO provides enhanced features for serious DIY enthusiasts.

Why Ryobi P506 One+ Lithium Ion 18V 5 1/ is better

Price

Ryobi is $30 cheaper

Weight

Ryobi is lighter than WORKPRO

RPM

Ryobi has a higher RPM

Why WORKPRO 20V Cordless Mini Circular Saw, 4-1/2" is better

Cutting Depth

WORKPRO has a deeper cutting capacity

Battery

WORKPRO includes a fast charger and larger battery

Accessories

WORKPRO comes with multiple blades

Overall score

Ryobi P506 One+ Lithium Ion 18V 5 1/
75
WORKPRO 20V Cordless Mini Circular Saw, 4-1/2"
82

Specifications

SpecRyobi P506 One+ Lithium Ion 18V 5 1/WORKPRO 20V Cordless Mini Circular Saw, 4-1/2"
BrandRYOBIWORKPRO
Power18V20V
Laser GuideYesYes
Bevel Cut50 degrees45 degrees
ErgonomicsGRIPZONERubberized

Dimension comparison

Ryobi P506 One+ Lithium Ion 18V 5 1/WORKPRO 20V Cordless Mini Circular Saw, 4-1/2"

Overview of the Products

The Ryobi P506 One+ Lithium Ion 18V Circular Saw is priced at $69.00, while the WORKPRO 20V Cordless Mini Circular Saw comes at $99.98. This makes the Ryobi about 31% cheaper than the WORKPRO model. Both saws cater to different user needs, reflecting their unique features and specifications, which will be explored in detail throughout this article.

Design and Build Quality

The Ryobi P506 features a robust design with GRIPZONE overmold for optimal grip and comfort, while the WORKPRO Mini Circular Saw is lightweight at 4.36 lbs, designed for easy one-handed operation. The Ryobi's larger size allows for a 5-1/2 inch blade, compared to the WORKPRO's 4-1/2 inch blade. This difference impacts the handling and maneuverability of the tools, making the Ryobi perhaps more suited for larger projects, while the WORKPRO excels in compactness and ease of use for more delicate tasks.

Power and Performance

The Ryobi operates at an impressive speed of 4,700 RPM, providing a powerful performance for various cutting tasks. In contrast, the WORKPRO, although slightly slower at 4,500 RPM, is engineered for versatility, allowing cutting through wood, tile, plastics, and soft metals. Both saws provide a depth of cut that makes them capable for a range of DIY projects, but the Ryobi's higher RPM may give it an edge in faster cutting for thicker materials.

Cutting Capacity and Versatility

The Ryobi has a maximum cutting depth of 1-9/16 inches, while the WORKPRO offers a slightly better maximum cutting depth of 1-11/16 inches at 90 degrees and 1-1/8 inches at 45 degrees. This gives the WORKPRO a slight advantage for users who need to make bevel cuts or work with varying angles. Both tools are equipped with a laser guide, which further enhances their cutting precision, making them viable options for detailed woodworking.

Battery and Charging

The Ryobi P506 operates on the 18V ONE+ System batteries, compatible with all RYOBI 18-Volt batteries. The WORKPRO, on the other hand, comes with a 20V 4.0Ah battery and a fast charger that can charge the battery in as little as 2 hours. This means that while the Ryobi may leverage existing batteries for users already in the ONE+ ecosystem, the WORKPRO's battery and charging capabilities offer convenience and efficiency, especially for those who are starting fresh.

Safety and Ergonomics

Ergonomically, both models are designed to minimize user fatigue during operation. The Ryobi features GRIPZONE overmold for comfort, while the WORKPRO includes a rubberized handle that aids in one-handed use and a switch locking mechanism for enhanced safety. The WORKPRO also incorporates a dust extraction tube that can connect to a vacuum cleaner, creating a cleaner workspace, which may be a significant benefit for users sensitive to dust and debris during cutting tasks.

Pricing and Value

At $69.00, the Ryobi P506 is a solid choice for those looking for a budget-friendly option with good performance, especially considering its bestseller rank of 100,142. The WORKPRO, priced at $99.98 and ranked at 17,357, offers additional features such as multiple blades and a more powerful battery, which may justify its higher price for serious DIY enthusiasts. The Ryobi thus presents a compelling value for casual users, while the WORKPRO may appeal more to those who need a versatile tool with additional accessories.

Which should you buy?

In conclusion, choosing between the Ryobi P506 and the WORKPRO 20V Cordless Mini Circular Saw depends largely on your specific needs and intended use. If you're looking for a cost-effective and robust tool for general cutting tasks, the Ryobi P506 is an excellent choice, being about 31% cheaper. However, if you require a more versatile saw with enhanced features, such as adjustable cutting depth and multiple blades, the WORKPRO may be worth the extra investment. Assess your project requirements, and you’ll find that each tool has its unique strengths to offer.