DEWALT 20V MAX* 6-1/2 in. Brushless Cordless vs Ryobi P506 One+ Lithium Ion 18V 5 1/
Updated July 2026 — DEWALT 20V MAX* 6-1/2 in. Brushless Cordless wins on power and cut depth, Ryobi P506 One+ Lithium Ion 18V 5 1/ wins on price and weight.
The DEWALT 20V MAX offers superior power and features compared to the Ryobi P506, making it the better choice for serious users. However, the Ryobi is a budget-friendly option for lighter tasks.
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.
Cutting Depth
DEWALT offers a maximum cut depth of 2-1/8 inches versus Ryobi's 1-9/16 inches.
Features
DEWALT includes an electric brake for added safety.
Why Ryobi P506 One+ Lithium Ion 18V 5 1/ is better
Price
Ryobi is significantly cheaper at $69 compared to DEWALT's $193.
Weight
Ryobi is lighter, making it easier to handle for extended periods.
Battery System
Ryobi is compatible with the extensive ONE+ battery system.
Overall score
Specifications
| Spec | DEWALT 20V MAX* 6-1/2 in. Brushless Cordless | Ryobi P506 One+ Lithium Ion 18V 5 1/ |
|---|---|---|
| RPM | 4950 | 4700 |
| Max Cut Depth | 2-1/8 in | 1-9/16 in |
| Electric Brake | Yes | No |
| Laser Guide | No | Yes |
| Battery Compatibility | 20V MAX | 18V ONE+ |
Dimension comparison
Price Comparison
When it comes to pricing, the Ryobi P506 is significantly more budget-friendly than the DEWALT 20V MAX. The Ryobi is priced at $69.00, while the DEWALT comes in at $193.98, making the Ryobi about 65% cheaper. This price difference may appeal to those on a tighter budget or those who require a circular saw for less demanding tasks. However, it’s important to consider what features and capabilities come with each tool, as the higher price of the DEWALT may reflect its performance and durability.
Power and Performance
The DEWALT 20V MAX boasts a powerful brushless motor that delivers 4,950 revolutions per minute (RPM), making it suitable for a variety of cutting applications. In contrast, the Ryobi P506 operates at a lower speed of 4,700 RPM. While this difference of 250 RPM may seem minor, it can affect cutting efficiency and precision, particularly in tougher materials. Therefore, for users who prioritize power and speed in their cutting tasks, the DEWALT may be the better option.
Cutting Capacity
In terms of cutting capacity, the DEWALT offers a maximum depth of cut of 2-1/8 inches at 90 degrees, while the Ryobi provides a lesser depth of 1-9/16 inches. This means that the DEWALT can handle thicker materials more effectively, making it ideal for professionals who need to cut through various types of wood and other materials. Additionally, both saws allow for angled cuts up to 50 degrees, but the DEWALT's greater depth capacity provides an edge for more demanding projects.
Features and Functionality
The DEWALT comes equipped with several features designed to enhance usability and safety. It includes a bright LED light for increased visibility and an electric brake that quickly stops the blade after the trigger is released. The Ryobi, while also featuring an integrated laser guide for improved cutline visibility, does not have an electric brake, which may be a consideration for those concerned about safety during operation. The added functionality of the DEWALT makes it a more advanced tool for serious users.
Design and Portability
In terms of design, both saws are relatively lightweight and compact, which aids in their portability. The DEWALT is known for its high maneuverability, making it easy to handle during various cutting tasks. The Ryobi, with its GRIPZONE overmold, offers a comfortable grip, which can be beneficial for prolonged usage. However, the DEWALT's built-in rafter hook allows for convenient storage on job sites, making it a more practical choice for professionals who need to transport their tools frequently.
Brand Reputation
DEWALT and Ryobi both have strong reputations in the power tool industry, but they cater to slightly different markets. DEWALT is often perceived as a premium brand, known for its durability and professional-grade tools, as reflected in its bestseller rank of 9,581. Ryobi, on the other hand, is popular for its affordability and accessibility, with a bestseller rank of 100,142. The choice between these brands may depend on whether the user prioritizes performance and longevity over cost.
Battery Compatibility
The DEWALT 20V MAX is compatible with all DEWALT 20V MAX and FLEXVOLT batteries, offering versatility for users who already own DEWALT products. In contrast, the Ryobi P506 is designed to work with the entire RYOBI 18-Volt ONE+ system, which boasts a vast array of tools. For users who already have batteries from either brand, this compatibility could influence their decision. If someone is already invested in one system, it may be more economical to continue with that brand.
Which should you buy?
Choosing between the DEWALT 20V MAX and the Ryobi P506 ultimately depends on your specific needs and budget. If you require a powerful, high-performance circular saw with advanced features and are willing to invest more, the DEWALT is the better choice. On the other hand, if you’re looking for a reliable saw at a significantly lower price point for lighter tasks, the Ryobi is an excellent option. Consider your typical projects, budget, and whether you already own batteries compatible with either brand when making your decision.

