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Ryobi One P505 18V Lithium Ion Cordless 5 1/2" vs WORKPRO 20V Cordless Mini Circular Saw, 4-1/2"

Updated July 2026 — Ryobi One P505 18V Lithium Ion Cordless 5 1/2" wins on rpm and weight, WORKPRO 20V Cordless Mini Circular Saw, 4-1/2" wins on price and battery.

The Ryobi One P505 offers better performance and value for budget-conscious users, while the WORKPRO provides a complete package with battery and charger.

Why Ryobi One P505 18V Lithium Ion Cordless 5 1/2" is better

Price

Ryobi is $44.89 compared to WORKPRO's $99.98

RPM

Ryobi has a higher RPM at 4,700 compared to WORKPRO's 4,500

Blade Size

Ryobi features a larger 5 1/2" blade versus WORKPRO's 4-1/2" blade

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

Included Battery

WORKPRO includes a 4.0Ah battery and fast charger

Safety Features

WORKPRO has a switch locking mechanism for added safety

Cutting Versatility

WORKPRO offers multiple blades for different materials

Overall score

Ryobi One P505 18V Lithium Ion Cordless 5 1/2"
85
WORKPRO 20V Cordless Mini Circular Saw, 4-1/2"
78

Specifications

SpecRyobi One P505 18V Lithium Ion Cordless 5 1/2"WORKPRO 20V Cordless Mini Circular Saw, 4-1/2"
BrandRYOBIWORKPRO
Sales Rank1848517357
Bevel Angleup to 50°up to 45°
Included Blades13
Charging TimeN/A2 hours

Dimension comparison

Ryobi One P505 18V Lithium Ion Cordless 5 1/2"WORKPRO 20V Cordless Mini Circular Saw, 4-1/2"

Introduction to Circular Saws

When it comes to selecting a circular saw, performance and versatility are key factors. The Ryobi One P505 and the WORKPRO 20V Cordless Mini Circular Saw are two notable options in the market, each offering distinct features and capabilities. The Ryobi is priced at $44.89, making it about 55% cheaper than the WORKPRO, which retails for $99.98. This price difference is significant and worth considering as we dive deeper into their features and performance.

Power and Performance

In terms of rotational speed, the Ryobi One P505 boasts an impressive 4,700 RPM, which is competitive among cordless saws. The WORKPRO, while slightly lower at 4,500 RPM, still offers a robust performance suitable for various cutting tasks. Both saws are designed for DIY enthusiasts and professionals alike, but the Ryobi's higher RPM may give it an edge in faster cuts. The Ryobi also has a sales rank of 18,485, while the WORKPRO is ranked at 17,357, indicating that both products have gained popularity among consumers.

Design and Ergonomics

The ergonomic design of both saws is tailored for user comfort and control. The Ryobi One P505 features a GRIPZONE overmold, which enhances grip and handling, while an extra side handle provides improved control and visibility during cuts. On the other hand, the WORKPRO also incorporates an ergonomic rubberized handle, designed for easy one-handed operation and reduced hand fatigue. With both tools prioritizing user comfort, the choice may come down to personal preference in handling and grip.

Cutting Capability

Cutting capability varies between the two models. The Ryobi One P505 is equipped with a 5 1/2" blade, allowing it to handle a range of materials robustly. In contrast, the WORKPRO's 4-1/2" blade is accompanied by multiple blades designed for different materials, including wood, plastic, and tiles. The WORKPRO's maximum cutting depth is 1-11/16" at 90° and 1-1/8" at 45°, providing versatility for various applications. While Ryobi excels in blade size, the WORKPRO's blade variety enhances its adaptability for different projects.

Battery and Charging

Battery life and charging capabilities are essential for cordless tools. The Ryobi One P505 is compatible with various Ryobi 18V batteries, but it does not include a battery in the package, which requires additional investment. Conversely, the WORKPRO comes with a 4.0Ah battery and a fast charger that can fully recharge the battery in as little as two hours. This inclusion offers a significant advantage for users who want a ready-to-use tool without the need for extra purchases.

Safety Features

Safety is paramount when using power tools, and both the Ryobi and WORKPRO offer important safety features. The Ryobi One P505 includes a transparent lower guard for maximum visibility during cuts, enhancing user safety. Meanwhile, the WORKPRO is equipped with a switch locking mechanism to prevent accidental activation, a crucial feature for any power tool. Both models emphasize safety, but the WORKPRO's additional safety measures may appeal to users who prioritize this aspect.

Versatility and Usability

The versatility of a circular saw is vital for a range of projects, from woodworking to DIY home improvements. The Ryobi One P505's adjustable bevel allows users to cut at angles up to 50 degrees, making it suitable for various applications. The WORKPRO also offers adjustable cutting angles from 0° to 45°, along with laser and parallel guides for precision cutting. While both saws provide adjustable angles, the Ryobi's higher bevel range may give it an edge for more intricate cuts.

Which should you buy?

Choosing between the Ryobi One P505 and the WORKPRO 20V Cordless Mini Circular Saw ultimately depends on your specific needs. The Ryobi is a budget-friendly option at $44.89, offering higher RPM and a larger blade, making it ideal for those who already own compatible batteries. However, if you prefer a complete package with a battery and fast charger included, the WORKPRO at $99.98 may be the better choice, especially given its additional safety features and versatility with multiple blades. Each saw presents unique advantages, so consider your requirements carefully before making a decision.