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RIDGID 18V Cordless 6 1/2 in. Circular Saw vs Ryobi One P505 18V Lithium Ion Cordless 5 1/2"

Updated July 2026 — RIDGID 18V Cordless 6 1/2 in. Circular Saw wins on build and weight, Ryobi One P505 18V Lithium Ion Cordless 5 1/2" wins on price and speed.

The RIDGID offers better durability and safety features, while the Ryobi is more budget-friendly and portable.

Why RIDGID 18V Cordless 6 1/2 in. Circular Saw is better

Durability

Heavy-duty aluminum base enhances longevity.

Safety Features

Includes an electronic blade brake.

Performance

Designed for tougher materials with lower RPM.

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

Price

Significantly cheaper at $44.89.

Speed

Higher RPM at 4,700 for efficient cutting.

User Comfort

Rubber grip and extra handle improve control.

Overall score

RIDGID 18V Cordless 6 1/2 in. Circular Saw
85
Ryobi One P505 18V Lithium Ion Cordless 5 1/2"
76

Specifications

SpecRIDGID 18V Cordless 6 1/2 in. Circular SawRyobi One P505 18V Lithium Ion Cordless 5 1/2"
RPM3,7004,700
Bevel Capacity50°50°
Blade BrakeYesNo
Base MaterialAluminumPlastic
Battery CompatibilityRIDGID 18VRyobi 18V

Dimension comparison

RIDGID 18V Cordless 6 1/2 in. Circular SawRyobi One P505 18V Lithium Ion Cordless 5 1/2"

Overview of the RIDGID 18V Cordless 6 1/2 in. Circular Saw

The RIDGID 18V Cordless 6 1/2 in. Circular Saw is priced at $87.89 and is designed for those who need a reliable tool for various cutting tasks. It delivers a maximum of 3,700 RPM and features a 50° bevel capacity, making it suitable for cutting through tough materials at common angles. The saw also includes an electronic blade brake for added safety and a heavy-duty aluminum base for durability. Its LED light enhances visibility in low-light situations.

Overview of the Ryobi One P505 18V Lithium Ion Cordless Circular Saw

The Ryobi One P505 is a more budget-friendly option, priced at $44.89, making it about 49% cheaper than the RIDGID model. It boasts a higher maximum speed of 4,700 RPM, providing power comparable to corded saws while maintaining portability. The saw features an adjustable bevel, allowing cuts at angles up to 50 degrees, and includes a transparent lower guard for better visibility during operation. This tool is designed for DIYers and homeowners looking for a reliable saw for various applications.

Performance Comparison

In terms of performance, the RIDGID saw operates at a maximum of 3,700 RPM, which is lower than the Ryobi's 4,700 RPM. This difference indicates that the Ryobi may handle tougher materials more efficiently due to its higher speed. Both models have a 50° bevel capacity, allowing versatility in cutting angles. However, the RIDGID model's electronic blade brake provides an added layer of safety, making it ideal for users who prioritize control and safety during operation.

Durability and Build Quality

The RIDGID 18V Circular Saw features a heavy-duty aluminum base, which enhances its durability and longevity, especially in demanding job site conditions. This robust construction may be appealing for professionals or those undertaking heavy-duty projects. In contrast, the Ryobi One P505, while still built to last, focuses more on being lightweight and portable. Its rubber overmolded GRIPZONE handles offer good control but may not match the ruggedness of the RIDGID's design.

User Control and Comfort

The Ryobi One P505 excels in user comfort with its rubber grip and extra side handle, which enhances control and visibility during cuts. This feature is particularly beneficial for DIYers who may be using the saw for extended periods or in awkward positions. The RIDGID also has a user-friendly design with an LED light for visibility, but it does not offer the same level of ergonomic features as the Ryobi. Both tools are manageable, but the Ryobi may provide a more comfortable user experience overall.

Battery Compatibility and Convenience

Both tools are designed to be compatible with their respective brands' 18V batteries, making them convenient for users who already own other tools from RIDGID or Ryobi. The RIDGID Circular Saw is fully compatible with all RIDGID 18V batteries, while the Ryobi One P505 works with models including P100, P102, P103, P104, P105, P107, and P108. This compatibility ensures that users can easily switch batteries between tools, enhancing convenience and portability for both saws.

Price Point and Value for Money

The RIDGID 18V Circular Saw is priced at $87.89, while the Ryobi One P505 is significantly cheaper at $44.89, making it about 49% less expensive. The lower price tag of the Ryobi does not compromise its performance, as it offers a higher RPM and decent features for DIY tasks. However, the RIDGID model may justify its higher price with its robust construction, additional safety features, and overall durability, catering more to professionals or serious hobbyists.

Which should you buy?

Choosing between the RIDGID 18V Cordless 6 1/2 in. Circular Saw and the Ryobi One P505 ultimately depends on your needs and budget. If you prioritize performance, durability, and safety features, the RIDGID may be the better choice for $87.89. However, if you are looking for a budget-friendly option that still offers decent power and features for everyday tasks, the Ryobi P505 at $44.89 presents excellent value for money. Both saws have their merits, so consider your specific use case before making a decision.