Milwaukee M18 FUEL 7-1/ vs Ryobi P506 One+ Lithium Ion 18V 5 1/
Updated July 2026 — Milwaukee M18 FUEL 7-1/ wins on cut depth and rpm, Ryobi P506 One+ Lithium Ion 18V 5 1/ wins on price.
The Milwaukee M18 FUEL offers superior performance and features, making it ideal for professionals, while the Ryobi P506 is a budget-friendly option for lighter tasks.
Why Milwaukee M18 FUEL 7-1/ is better
Power
Milwaukee has a higher RPM at 6000 compared to Ryobi's 4700.
Cut Capacity
Milwaukee can cut up to 2-5/8 inches, while Ryobi is limited to 1-9/16 inches.
Features
Milwaukee includes advanced features like REDLINK PLUS Intelligence.
Why Ryobi P506 One+ Lithium Ion 18V 5 1/ is better
Price
Ryobi is significantly cheaper at $69 compared to Milwaukee's $214.99.
Weight
Ryobi is lighter and more portable for casual users.
Battery Compatibility
Ryobi works with all RYOBI 18-Volt ONE+ batteries.
Overall score
Specifications
| Spec | Milwaukee M18 FUEL 7-1/ | Ryobi P506 One+ Lithium Ion 18V 5 1/ |
|---|---|---|
| Motor Type | Brushless | Brushed |
| Max RPM | 6000 | 4700 |
| Cut Capacity | 2-5/8 inches | 1-9/16 inches |
| Battery Type | M18 REDLITHIUM | RYOBI ONE+ |
| Weight | 10 lbs | 8 lbs |
Dimension comparison
Price Comparison
The Milwaukee M18 FUEL 7-1/4 Inch Circular Saw is priced at $214.99, while the Ryobi P506 One+ Lithium Ion 18V 5-1/2 Inch Circular Saw is significantly cheaper at $69.00. This makes the Ryobi about 68% less expensive than the Milwaukee model. For budget-conscious users or those who require a circular saw for lighter tasks, the Ryobi offers an attractive price point. However, the Milwaukee saw is designed for more demanding applications, which may justify its higher cost for professionals or serious DIY enthusiasts.
Performance and Power
The Milwaukee M18 FUEL boasts a powerful POWERSTATE Brushless Motor that reaches speeds of 6,000 RPM, ideal for tackling heavy-duty jobs with ease. In contrast, the Ryobi P506 operates at a maximum of 4,700 RPM. While the Ryobi provides sufficient power for general use, the Milwaukee is engineered for those who need higher performance and cut speed, making it suitable for more demanding applications. The difference in RPM indicates that users of the Milwaukee can expect greater efficiency and productivity on tougher materials.
Cutting Capacity
In terms of cutting capacity, the Milwaukee saw excels with a 2-5/8 inch cut depth, allowing it to cut through thicker materials in a single pass. The Ryobi, on the other hand, has a maximum cut depth of 1-9/16 inches. This significant difference means that the Milwaukee is better suited for professional carpenters or contractors who frequently work with larger materials. For hobbyists or those engaged in lighter tasks, the Ryobi still performs well but may not handle larger jobs as efficiently.
Design and Ergonomics
Both circular saws are designed with user comfort in mind, but they cater to different audiences. The Milwaukee saw is lightweight and compact, making it a practical choice for all-day cutting. It also features additional ergonomic elements such as an electric blade brake, LED work light, and magnesium guards for durability. The Ryobi includes a GRIPZONE overmold for optimal grip and comfort, ensuring a secure handling experience. However, it lacks some of the advanced features found in the Milwaukee model, which may be critical for professional use.
Battery Compatibility
Battery compatibility is a crucial consideration for users invested in cordless tools. The Milwaukee M18 FUEL is compatible with all M18 REDLITHIUM batteries and can deliver up to 750 cuts per charge when paired with the M18 REDLITHIUM FORGE HD12.0 battery. The Ryobi P506 works with all RYOBI 18-Volt ONE+ System batteries, making it versatile within the RYOBI lineup. Users who already own compatible batteries may find the Ryobi more convenient, while those seeking maximum performance over battery life may lean towards the Milwaukee option.
Features and Accessories
The Milwaukee M18 FUEL is equipped with several advanced features, including REDLINK PLUS Intelligence for maximum performance and protection against overloads, heating, and over-discharge. It also includes positive bevel and depth detents, enhancing productivity. The Ryobi P506, while lacking some of these advanced features, does come with an integrated laser guide for enhanced cutline visibility, which can be quite useful for achieving precise cuts. Users may appreciate the simplicity of the Ryobi's features, especially if they do not require the high-performance elements of the Milwaukee.
Sales Rank and Market Position
In terms of market presence, the Milwaukee M18 FUEL has a bestseller rank of 20,665, indicating a solid position among users who prioritize quality and performance in their tools. Conversely, the Ryobi P506 is ranked at 100,142, suggesting that it may not be as popular or trusted among professional users as the Milwaukee. This difference in sales rank may reflect the targeted user base for each product—professional tradespeople favoring the Milwaukee and casual users opting for the more affordable Ryobi.
Which should you buy?
The decision between the Milwaukee M18 FUEL and the Ryobi P506 ultimately depends on your specific needs and budget. If you require a high-performance circular saw for demanding applications, the Milwaukee is a clear choice, offering superior power, cutting capacity, and advanced features. However, if your projects are lighter or you are looking for a budget-friendly option, the Ryobi P506 provides excellent value at a significantly lower price. Choose based on whether you prioritize performance and durability or affordability and ease of use.

