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Ryobi One P505 18V Lithium Ion Cordless 5 1/2" vs SKIL 15 Amp 7-1/

Updated July 2026 — Ryobi One P505 18V Lithium Ion Cordless 5 1/2" wins on power, SKIL 15 Amp 7-1/ wins on speed and price.

The Ryobi One P505 is a budget-friendly, portable option, while the SKIL 5280 offers superior power and features for demanding tasks.

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

Price

Ryobi is $24.11 cheaper

Portability

Ryobi is cordless and lightweight

User Features

Ryobi has a transparent lower guard for visibility

Why SKIL 15 Amp 7-1/ is better

Power

SKIL has a 15-amp motor vs Ryobi's 18V

Blade Size

SKIL has a 7-1/4 inch blade vs Ryobi's 5-1/2 inch

Cutting Speed

SKIL operates at 5,300 RPM vs Ryobi's 4,700 RPM

Overall score

Ryobi One P505 18V Lithium Ion Cordless 5 1/2"
70
SKIL 15 Amp 7-1/
85

Specifications

SpecRyobi One P505 18V Lithium Ion Cordless 5 1/2"SKIL 15 Amp 7-1/
Motor Power18V15 Amp
Max RPM47005300
Blade Type5 1/2 inch7-1/4 inch
Bevel Capacity50 degrees51 degrees
Weight5 lbs10 lbs

Dimension comparison

Ryobi One P505 18V Lithium Ion Cordless 5 1/2"SKIL 15 Amp 7-1/

Overview of the Ryobi One P505 and SKIL 5280

The Ryobi One P505 is priced at $44.89, while the SKIL 5280 costs $69.00, making the Ryobi about 35% cheaper than the SKIL. Both circular saws cater to different user needs, with the Ryobi focusing on portability and convenience, while the SKIL emphasizes power and advanced features.

Design and Build Quality

In terms of design, the Ryobi One P505 features a lightweight and cordless build, ideal for users who need to move around frequently. Its GRIPZONE overmold enhances handling, allowing for better control during cuts. Conversely, the SKIL 5280, with its robust 15-amp motor and a heavier build, is designed for durability and rigorous tasks. The inclusion of a spindle lock facilitates easy blade changes, making it user-friendly for those who frequently switch blades. While the Ryobi is compact and portable, the SKIL offers a more rugged design suited for intense jobs.

Power and Performance

The SKIL 5280 boasts a powerful 15-amp motor that delivers up to 5,300 RPM, which is significantly faster than the Ryobi One P505's 4,700 RPM. This higher speed enables quicker cuts, making the SKIL a better choice for professionals or those tackling larger projects. However, the Ryobi’s cordless design provides the convenience of portability, allowing users to work without being tethered to a power source. For those seeking efficiency in cutting through tough materials, the SKIL clearly outperforms its competitor in raw power.

Cutting Capacity

The Ryobi One P505 features a 5 1/2-inch blade, while the SKIL 5280 comes with a larger 7-1/4 inch carbide-tipped blade. This difference in blade size allows the SKIL to handle larger materials more effectively, making it suitable for tasks like cutting lumber and sheet goods. Moreover, the SKIL offers a 51-degree bevel capacity with a positive stop at 45 degrees, enabling a variety of cut options. In contrast, while the Ryobi allows for bevel adjustments up to 50 degrees, it may not provide the same versatility for more complex cuts.

User Features

The Ryobi One P505 excels in user-friendly features with its transparent lower guard that allows for maximum visibility during cuts. Additionally, the extra side handle enhances control and visibility, making it easier for users to manage their cuts. On the other hand, the SKIL 5280 includes a dust blower that keeps the line of cut clear of debris, improving visibility further. Both saws incorporate safety features, but the SKIL's safety lock and power-on indicator offer added protection against accidental starts, making it a more robust option for safety-conscious users.

Portability and Convenience

Portability is a significant advantage of the Ryobi One P505, which is cordless and lightweight, making it easy to transport around various work areas. This feature is perfect for DIY enthusiasts or homeowners looking to perform tasks without the hassle of cords. In contrast, the SKIL 5280 is a corded model, which may limit mobility but offers consistent power without the need for battery changes. Users with a preference for on-the-go projects may find the Ryobi more convenient, while those prioritizing power for stationary tasks may lean towards the SKIL.

Price and Value

With the Ryobi One P505 priced at $44.89 and the SKIL 5280 at $69.00, the Ryobi presents a more budget-friendly option, costing about $24.11 less. For casual users or those undertaking small projects, the Ryobi offers excellent value without compromising on essential features. In contrast, the SKIL, despite its higher price, delivers advanced capabilities suited for more demanding applications. Users must consider their specific needs and budget when deciding which saw provides the best value.

Which should you buy?

Choosing between the Ryobi One P505 and the SKIL 5280 ultimately depends on your specific requirements. If you are looking for a cost-effective, portable solution for light to moderate tasks, the Ryobi is an excellent choice at $44.89. However, if you need a powerful saw for heavy-duty cutting with advanced features, the SKIL 5280, priced at $69.00, may be worth the investment. Weighing the differences in power, features, and portability will guide you to the best option for your woodworking needs.