Quick Answer
Ryobi circular saws fall into two main groups: corded models with 7-1/4" blades (15-amp or 14-amp) and cordless 18V ONE+ models in several blade sizes (4-1/2", 5-1/2", 6-1/2"). Choose a corded saw for continuous heavy cutting; choose a cordless model for portability and light DIY work. For the best balance of power and convenience, the 6-1/2" 18V ONE+ HP Brushless Track Saw Kit offers precision cuts, while the 4-1/2" compact saw is ideal for one-handed trimming.
Blade Sizes
Ryobi offers circular saws in five blade diameters: 4-1/2", 5-1/2", 6-1/2", 7-1/4" (corded), and another 7-1/4" corded model. Blade size determines cutting depth and material compatibility:
- 4-1/2" blade: Suitable for thin plywood, drywall, or trim. The 18V ONE+ 4-1/2" Circular Saw (PCL400B) is lightweight and designed for one-handed use.
- 5-1/2" blade: Handles 2x lumber and thicker sheet goods. The 18V ONE+ 5-1/2" Circular Saw (PCL500B) is a common choice for DIY framing and decking.
- 6-1/2" blade: Provides deeper cuts for cross-cutting pressure-treated lumber. The 18V ONE+ 6-1/2" Circular Saw (P507) is a popular cordless option.
- 7-1/4" (corded): Maximum depth for cutting 4x4 posts or stacked plywood. Available as 15 Amp or 14 Amp models.
Power Type
Based on source data, Ryobi circular saws come in battery (12 models) and corded (3 models) versions. The 18V ONE+ system is the common battery platform, allowing batteries to be shared across tools. Corded saws provide unlimited runtime at the cost of a power cord, while cordless saws offer freedom of movement but require a charged battery.
Key Features
All Ryobi circular saws reviewed from retail listings include basic features such as depth adjustment, keyed blade change, spindle lock, and a blade guard system. Additionally, the 18V ONE+ 4-1/2" Circular Saw Kit (PCL400K1) features on-board wrench storage and an adjustable depth-of-cut scale for improved accuracy.
| Feature | Corded 7-1/4" | 18V ONE+ 4-1/2" | 18V ONE+ 5-1/2" | 18V ONE+ 6-1/2" |
|---|---|---|---|---|
| Power | 15 Amp / 14 Amp | 18V Battery | 18V Battery | 18V Battery |
| Blade Size | 7-1/4" | 4-1/2" | 5-1/2" | 6-1/2" |
| Typical Use | Heavy cutting | Light trim | General DIY | Framing/outdoor |
| Depth Cut Scale | Yes | Yes | Yes | Yes |
| Wrench Storage | Not specified | Yes | Not specified | Not specified |
Note: Feature details beyond depth scale and wrench storage are based on product listings; actual specs may vary by model. The above table reflects source-backed information only.
Model Selection
Based on pricing and availability from Ryobi.com and Home Depot:
- Budget pick: 18V ONE+ 4-1/2" Circular Saw (PCL400B) – tool only, $59.97 (special buy). Ideal for light tasks.
- Kit pick: 18V ONE+ 4-1/2" Circular Saw Kit (PCL400K1) – includes battery and charger, $99.00. Great for new users who need a complete setup.
- Mid-range cordless: 18V ONE+ 6-1/2" Circular Saw (P507) – $77.42, tool only. Best for general cutting.
- Premium track saw: 18V ONE+ HP Brushless 6-1/2" Track Saw Kit (PTS01K) – $419.00. Designed for precision cuts with a guide rail.
- Corded workhorse: 15 Amp 7-1/4" Circular Saw – price not specified in sources, but available for heavy jobs.
Practical Takeaways
- Match blade size to your material: For 2x4s or thicker, choose at least a 5-1/2" cordless or a 7-1/4" corded saw. For trim or drywall, a 4-1/2" saw is sufficient.
- Consider your existing battery platform: If you already own 18V ONE+ tools, a cordless model avoids buying another charger. The 4-1/2" kit (PCL400K1) includes a battery and charger, while the 6-1/2" saw (P507) is tool-only.
- Look for special buys: Ryobi lists 8 items under "SPECIAL BUY" on its site, indicating temporary discounts.
- If you need precision, choose a track saw: The 6-1/2" HP Brushless Track Saw Kit (PTS01K) is the only model explicitly designed for guided cuts.
- On-board storage matters: The 4-1/2" model includes wrench storage, a convenience feature not confirmed on other models.
This article is based on specification data from Ryobi.com and retail listings. It does not reflect hands-on testing or long-term use.
