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DEWALT 20V MAX* 6-1/2 in. Brushless Cordless vs Ryobi One P505 18V Lithium Ion Cordless 5 1/2"

Updated July 2026 — DEWALT 20V MAX* 6-1/2 in. Brushless Cordless wins on features and cut depth, Ryobi One P505 18V Lithium Ion Cordless 5 1/2" wins on price and weight.

The DEWALT offers superior power and features, making it the better choice for professionals, while the Ryobi is a budget-friendly option for casual users.

Why DEWALT 20V MAX* 6-1/2 in. Brushless Cordless is better

Power

DEWALT has a higher RPM at 4,950 compared to Ryobi's 4,700.

Features

DEWALT includes a brushless motor and electric brake.

Cut Depth

DEWALT offers a maximum cut depth of 2-1/8 in.

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

Price

Ryobi is significantly cheaper at $44.89.

Weight

Ryobi is lighter and easier to handle for casual users.

Grip

Ryobi features GripZone overmold for better handling.

Overall score

DEWALT 20V MAX* 6-1/2 in. Brushless Cordless
85
Ryobi One P505 18V Lithium Ion Cordless 5 1/2"
65

Specifications

SpecDEWALT 20V MAX* 6-1/2 in. Brushless CordlessRyobi One P505 18V Lithium Ion Cordless 5 1/2"
RPM4,9504,700
Max Cut Depth2-1/8 in.1-3/4 in.
Weight7.4 lbs5.5 lbs
Battery20V MAX18V
Electric BrakeYesNo

Dimension comparison

DEWALT 20V MAX* 6-1/2 in. Brushless CordlessRyobi One P505 18V Lithium Ion Cordless 5 1/2"

Overview of the DEWALT and Ryobi Circular Saws

The DEWALT 20V MAX 6-1/2 in. Brushless Cordless Circular Saw is significantly more powerful than the Ryobi One P505 18V Lithium Ion Cordless Circular Saw. With a price of $193.98, the DEWALT saw delivers a robust 4,950 RPM compared to the Ryobi's 4,700 RPM. This difference in power can lead to faster and more efficient cutting, particularly in tougher materials. Additionally, the DEWALT saw comes equipped with advanced features such as a brushless motor, tool-free bevel adjustments, and a built-in rafter hook, making it a versatile choice for professionals and serious DIYers alike.

Power and Performance

When it comes to power and performance, the DEWALT saw clearly outshines the Ryobi. The DEWALT's brushless motor allows for optimal cutting performance at 4,950 RPM, while the Ryobi operates at 4,700 RPM. This approximately 5% difference may seem minor, but it can be significant for demanding tasks. The DEWALT also offers a maximum depth of cut of 2-1/8 in. at 90°, giving it an edge in handling thicker materials. If you prioritize cutting speed and efficiency, the DEWALT is the clear winner in this category.

Design and Ergonomics

In terms of design and ergonomics, both the DEWALT and Ryobi circular saws have features that enhance user comfort and handling. The DEWALT saw is lightweight and compact, which aids maneuverability on the job site. It includes a built-in rafter hook for easy storage. Conversely, the Ryobi features GripZone overmold on its handles, improving friction and control, especially in varying conditions. An extra side handle on the Ryobi provides better visibility and control during cuts. While both designs offer advantages, the DEWALT's lightweight design may be more suited for extended use.

Bevel Adjustments and Cutting Versatility

Both circular saws provide adjustable bevel capabilities, allowing users to make cuts at various angles. The DEWALT saw features a tool-free bevel lever that allows for quick adjustments up to 50°, making it easier to switch between different cutting angles. Similarly, the Ryobi also allows adjustments up to 50°, but requires manual settings. The DEWALT's quick adjustment feature enhances its versatility, making it a more efficient choice for users who frequently change cut angles.

Visibility and Safety Features

Visibility and safety are crucial aspects when operating power tools, and both saws come equipped with useful features. The DEWALT saw includes a bright LED light that improves visibility during cuts, while the Ryobi features a transparent lower guard that allows users to see their cutting line clearly. Additionally, the DEWALT has an electric brake that quickly stops the blade after the trigger is released, adding an extra layer of safety. While both saws prioritize visibility, the DEWALT's electric brake is a notable safety feature that sets it apart.

Battery Compatibility and Convenience

When considering battery compatibility, the DEWALT 20V MAX is compatible with all DEWALT 20V MAX and FLEXVOLT batteries, offering flexibility for users with existing DEWALT tools. The Ryobi One P505 operates with a range of Ryobi's 18V batteries, including the P100 to P108 series. While both systems provide compatibility with their respective battery lines, the DEWALT's broader compatibility may appeal to those who have invested in the DEWALT ecosystem. However, it's important to note that neither saw includes a battery or charger, which must be purchased separately.

Pricing and Value

The DEWALT 20V MAX saw is priced at $193.98, making it a premium option in the market. In contrast, the Ryobi One P505 is significantly cheaper at $44.89, offering about 77% savings compared to the DEWALT. While the Ryobi offers substantial value for casual users or homeowners, the DEWALT’s higher price reflects its advanced features and superior performance, making it more suitable for professionals or those requiring a reliable tool for frequent use.

Which should you buy?

In conclusion, the choice between the DEWALT 20V MAX and the Ryobi One P505 largely depends on your specific needs and budget. If you prioritize power, advanced features, and professional-grade performance, the DEWALT is the superior option. However, for casual users or those on a budget, the Ryobi offers excellent value and functionality for light to moderate tasks. Ultimately, your decision should align with how you plan to use the saw and how much you are willing to invest in your tools.