Best Cordless Circular Saws
Quick answer
For most buyers, the DEWALT DCS391B is the top pick thanks to its versatile 6-1/2 inch blade, wide bevel range, and compatibility with the extensive DEWALT 20V MAX tool lineup.
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Research updated September 2026.
What Matters Most for This Category
The most important factors in a cordless circular saw are blade size, which determines maximum cut depth, and motor type, since brushless motors tend to run more efficiently and last longer than brushed ones. Battery platform compatibility also matters a great deal, since staying within a system you already own saves money and avoids juggling multiple chargers, and bevel range affects how well a saw handles angled cuts for trim and framing work.
| Model | Best for | Key specs | Research Score |
|---|---|---|---|
| DEWALT 20V MAX Circular Saw, Cordless Sidewinder Style Portable, 6-1/2-Inch Blade, 5150 RPM, 0-50 Degree Bevel Capability, Battery Not Included (DCS391B) | Best Overall | DEWALT, N/A | 90/100 |
| DEWALT 20V MAX XR Brushless Cordless 7-1/4 in. Circular Saw, Tool Only (DCS590B) | Best for Heavy Duty Cutting | DEWALT, N/A | 87/100 |
| DEWALT 20V MAX* 6-1/2 in. Brushless Cordless Circular Saw, Tool Only (DCS565B) | Best Compact Brushless Pick | DEWALT, N/A | 83/100 |
| ONEAND 18V Cordless 5 1/2 in. Circular Saw Tool ONLY | Best Budget | ONEAND, $40.0 | 78/100 |
| Ryobi One P505 18V Lithium Ion Cordless 5 1/2" 4,700 RPM Circular Saw (Battery Not Included, Power Tool Only), Green | Best Value | Ryobi, $42.95 | 75/100 |
DEWALT 20V MAX Circular Saw, Cordless Sidewinder Style Portable, 6-1/2-Inch Blade, 5150 RPM, 0-50 Degree Bevel Capability, Battery Not Included (DCS391B)
Best OverallPros
- Sidewinder design keeps the motor inline with the blade for a clearer view along the cut line
- 0 to 50 degree bevel capability covers most angled cutting needs without a second tool
- Runs on the widely used DEWALT 20V MAX battery platform, sharing packs with other DEWALT tools
Cons
- Sold as a bare tool, so a compatible 20V MAX battery and charger must be bought separately
- Standard brushed motor may run less efficiently and wear faster than brushless alternatives
The DEWALT DCS391B is a cordless sidewinder style circular saw built around a 6-1/2 inch blade and a 5150 RPM motor for consistent, everyday cutting. Its 0 to 50 degree bevel range and 20V MAX compatibility make it a flexible choice for framing, sheet goods, and general jobsite work.
DEWALT 20V MAX XR Brushless Cordless 7-1/4 in. Circular Saw, Tool Only (DCS590B)
Best for Heavy Duty CuttingPros
- Brushless motor improves power delivery efficiency and extends runtime per charge
- Full size 7-1/4 inch blade allows deeper cuts through thicker lumber and dimensional stock
- Part of the DEWALT 20V MAX XR lineup, built for durability under regular jobsite use
Cons
- Larger 7-1/4 inch blade adds weight and bulk compared to compact 6-1/2 inch saws
- Sold as tool only, so a battery and charger are an additional purchase
The DEWALT DCS590B is a brushless cordless circular saw with a full size 7-1/4 inch blade for deeper, more demanding cuts. Built on the 20V MAX XR platform, it suits users who need more cutting capacity than a compact saw typically provides.
DEWALT 20V MAX* 6-1/2 in. Brushless Cordless Circular Saw, Tool Only (DCS565B)
Best Compact Brushless PickPros
- Brushless motor improves runtime efficiency and reduces long term maintenance versus brushed designs
- 6-1/2 inch blade keeps the saw lighter and easier to maneuver for everyday tasks
- Shares the 20V MAX battery platform with other DEWALT tools for cross compatibility
Cons
- Tool only listing means battery and charger costs are additional
- Smaller blade size limits maximum cut depth compared to 7-1/4 inch saws
The DEWALT DCS565B pairs a brushless motor with a 6-1/2 inch blade for a lighter, more maneuverable cordless circular saw. It runs on the 20V MAX platform and targets users who want brushless efficiency without the bulk of a full size saw.
ONEAND 18V Cordless 5 1/2 in. Circular Saw Tool ONLY
Best BudgetPros
- Compact 5-1/2 inch blade makes the saw easy to control for light duty and occasional cuts
- Low entry price makes it accessible for casual DIYers on a tight budget
- Lightweight build suits trim work and smaller craft style cutting tasks
Cons
- Smaller blade size limits cutting depth and capacity compared to full size saws
- Sold as tool only, so battery compatibility should be confirmed before buying
The ONEAND 18V Cordless 5-1/2 inch circular saw is a compact, budget friendly option aimed at light cutting tasks. It offers an accessible entry point into cordless circular saws without a large upfront investment.
Ryobi One P505 18V Lithium Ion Cordless 5 1/2" 4,700 RPM Circular Saw (Battery Not Included, Power Tool Only), Green
Best ValuePros
- Part of the widely available Ryobi One+ 18V battery system, useful for households with other Ryobi tools
- 4,700 RPM motor provides adequate speed for common trim and plywood cutting
- Compact 5-1/2 inch size keeps the saw light and easy to control one handed
Cons
- Smaller blade size restricts maximum cut depth compared to 6-1/2 or 7-1/4 inch saws
- Sold without a battery, requiring an existing or separately purchased Ryobi One+ pack
The Ryobi One P505 is an 18V cordless circular saw with a 5-1/2 inch blade and a 4,700 RPM motor, built around the broad Ryobi One+ battery ecosystem. It is designed as a lightweight, budget conscious option for everyday trim and small scale cutting tasks.
Who Should Avoid the Top Pick
Buyers who need to make deep, repeated cuts through thick timber all day, such as full time framers, should avoid the smaller 5-1/2 inch models and lean toward a 7-1/4 inch saw instead. Anyone without an existing battery platform should also be cautious with tool only listings, since the cost of a battery and charger can add significantly to the final price.
Before You Buy
Before buying, confirm whether the saw is sold as a bare tool or includes a battery and charger, since most cordless circular saws are sold tool only. Also check that the battery voltage and mount type match tools you already own, and think through the typical material thickness you will be cutting so the blade size fits the job.
FAQs
How do I choose cordless circular saws?
Start by matching blade size to the cut depth your projects require, favor a brushless motor if you want better efficiency and longer tool life, and check that the saw's battery platform matches tools you already own before comparing price.
Our verdict
Across these five options, blade size and battery platform do most of the work in separating a good match from a poor one. The DEWALT saws offer the strongest overall balance of cutting capacity and ecosystem support, while the ONEAND and Ryobi models serve buyers who want a lighter, more affordable saw for smaller tasks.