Powerful 18V Circular Saws for Every Build
The Makita XSS02Z 18V LXT Lithium-Ion Brushless Cordless 6-1/2″ Circular Saw is our top pick for most users. It offers a great balance of power, weight, and cutting depth. Its main advantage is the efficient brushless motor that extends runtime. Its main limitation is the lack of an electric brake, which some users miss for added safety.
Choosing the right 18V circular saw can be daunting with so many options. You need a tool that delivers clean cuts, lasts through your projects, and feels comfortable in your hands.
This roundup compares seven of the best-selling 18V circular saws from leading brands. We break down their strengths and weaknesses to help you decide which one fits your workshop.
The top picks, ranked
Makita XSS02Z 18V LXT Lithium-Ion Brushless Cordless 6-1/2″ Circular Saw
The Makita XSS02Z delivers a solid 3,700 RPM and a cutting depth of 2-1/4 inches at 90 degrees. Its brushless motor provides longer runtime and more power. Users appreciate the built-in dust blower that keeps the cut line visible.
Pros
- Brushless motor for efficiency
- Dust blower for clear line of sight
- Lightweight design
Cons
- No electric brake
- Bare tool (battery not included)
DEWALT 20V MAX Circular Saw, 6-1/2-Inch (DCS570B)
The DEWALT DCS570B is a 6-1/2-inch saw that offers a cutting depth of 2-1/4 inches at 90 degrees and 1-1/2 inches at 45 degrees. It features a high-strength magnesium shoe and a tough cordless design. Users like its comfortable handle and reliable performance.
Pros
- High RPM for fast cuts
- Magnesium shoe for durability
- Comfortable grip
Cons
- Heavier than some competitors
- Bare tool (battery not included)
Milwaukee M18 2731-20 6-1/2″ Circular Saw
Milwaukee’s M18 2731-20 is a 6-1/2-inch saw with a brushless motor that delivers 4,000 RPM. It includes an electric brake that stops the blade quickly, enhancing safety. The built-in LED light illuminates the cut area, and the rafter hook is handy.
Pros
- Electric brake for safety
- LED light for visibility
- Rafter hook for convenience
Cons
- Slightly heavier than some
- Bare tool (battery not included)
Ryobi P508 18V ONE+ 5-1/2″ 18V Cordless Circular Saw
The Ryobi P508 is a compact 5-1/2-inch saw that is easy to handle. It cuts up to 1-3/4 inches deep at 90 degrees. It features a laser guide for accurate cuts, though some users find it needs adjustment. It’s a great value for occasional use.
Pros
- Lightweight and compact
- Laser guide for accuracy
- Affordable price point
Cons
- Limited cutting depth
- Laser may require calibration
SKIL 5280-01 6-1/2″ Circular Saw with PWRCore 20 Compact
The SKIL 5280-01 is a lightweight 6-1/2-inch saw that weighs only 5.5 pounds with a battery. It delivers 3,700 RPM and features a dust blower and LED light. Its compact design makes it easy to maneuver in tight spaces.
Pros
- Extremely lightweight
- Dust blower and LED light
- Compact for tight spots
Cons
- Smaller battery capacity (may need extra)
- Not as powerful as larger models
Bosch CCS180B 18V 6-1/2″ Circular Saw
The Bosch CCS180B features a clear-view window that offers a direct line of sight to the blade. It has a thin kerf blade for faster cuts and a dust blower that keeps the line clear. It is a solid performer with a comfortable grip.
Pros
- Clear-view window for visibility
- Dust blower
- Comfortable grip
Cons
- No electric brake
- Heavier than some
Metabo HPT C18DSHL2 18V 6-1/2″ Circular Saw
The Metabo HPT C18DSHL2 spins up to 4,000 RPM for fast cuts. It includes a laser marker for accuracy and an LED light. The saw has a built-in dust blower and a lock-off lever for safety. It is a reliable choice for framing.
Pros
- High RPM for fast cuts
- Laser marker and LED light
- Dust blower
Cons
- Heavier design
- Laser may be hard to see in sunlight
How they compare
| # | Model | Blade Size | Best for | Score | Price |
|---|---|---|---|---|---|
| 1 | Makita XSS02Z 18V LXT Lithium-Ion Brushless Cordless 6-1/2″ Circular Saw | 6-1/2 inches | Best overall for balanced performance | 9.4 | Check price |
| 2 | DEWALT 20V MAX Circular Saw, 6-1/2-Inch (DCS570B) | 6-1/2 inches | Best for deep cuts and durability | 9.2 | Check price |
| 3 | Milwaukee M18 2731-20 6-1/2″ Circular Saw | 6-1/2 inches | Best for power and safety features | 9.0 | Check price |
| 4 | Ryobi P508 18V ONE+ 5-1/2″ 18V Cordless Circular Saw | 5-1/2 inches | Best budget-friendly option for light tasks | 8.6 | Check price |
| 5 | SKIL 5280-01 6-1/2″ Circular Saw with PWRCore 20 Compact | 6-1/2 inches | Best for portability and ease of use | 8.4 | Check price |
| 6 | Bosch CCS180B 18V 6-1/2″ Circular Saw | 6-1/2 inches | Best for precision and visibility | 8.2 | Check price |
| 7 | Metabo HPT C18DSHL2 18V 6-1/2″ Circular Saw | 6-1/2 inches | Best for cutting speed | 8.0 | Check price |
Before you buy
Questions worth asking
Can a 6-1/2 inch circular saw cut through a 2×4?
Yes, a 6-1/2 inch saw with a cutting depth of at least 2-1/4 inches can cut through a standard 2×4 (which is 1.5 x 3.5 inches) in a single pass.
What is the advantage of a brushless motor?
Brushless motors are more efficient, providing longer runtime and more power. They also have fewer moving parts, which can increase the tool’s lifespan.
Are 18V circular saws powerful enough for framing?
Yes, with the right blade and battery, many 18V saws can handle framing tasks, especially those with brushless motors and higher RPM.
Do I need a battery included?
If you already own compatible batteries from the same brand, you can save money by buying a bare tool. Otherwise, consider a kit that includes a battery and charger.
What is the typical weight of an 18V circular saw?
Weights vary from around 5.5 to 8.5 pounds, depending on the battery and materials. Lighter saws are easier to handle but may have less power.
Can I use a diamond blade for cutting metal?
While diamond blades are available for cutting metal, circular saws for wood are not ideal. You should use a saw designed for metal cutting or a proper abrasive blade.
What is the difference between 5-1/2 and 6-1/2 inch blades?
The main difference is cutting depth and weight. A 6-1/2 inch blade offers deeper cuts, while a 5-1/2 inch blade is lighter and more compact.
How do I maintain my circular saw?
Keep the blade sharp, clean the air vents, and check the power cord or battery contacts. Store the saw in a dry place and use the blade guard properly.
Is an electric brake necessary?
An electric brake stops the blade quickly, enhancing safety and preventing kickback. It’s not mandatory but is a valuable feature, especially for beginners.
Can I use a 7-1/4 inch blade on an 18V saw?
No, you should only use the blade size specified by the manufacturer. Using a larger blade can damage the saw and cause safety hazards.
Our take
For most DIY enthusiasts and professionals, the Makita XSS02Z is the best all-around 18V circular saw. It combines power, efficiency, and a lightweight build, making it a reliable choice for various cuts. If you prioritize safety, the Milwaukee 2731-20 with its electric brake is worth the extra weight. And for those on a budget, the Ryobi P508 offers decent performance for occasional tasks, but you’ll need to accept its limitations in depth and power.
