20V vs 36V Circular Saws: Which Should You Buy?
Compare 20V and 36V circular saws by voltage, torque, and cut depth. See how brushless motors and battery systems affect performance for your projects.
By GaugeKit Editorial Team 6 min read
As Amazon Associates, we earn from qualifying purchases. This means we may receive a small commission at no extra cost to you if you click through and make a purchase.
As an Amazon Associate we earn from qualifying purchases. Links on this page are affiliate links.
Choosing between a 20V vs 36V circular saw depends on your specific cutting needs. Both tools feature brushless motors for efficiency and cordless freedom. The main difference lies in power delivery and blade size. The DEWALT model offers higher voltage in a single battery system with a larger blade. The Makita setup uses dual batteries for increased torque and includes a plunge mechanism. You must decide which configuration fits your workflow.
Voltage
20V
36V (18V x2)
Blade Diameter
7-1/4 in.
6-1/2 in.
Maximum Speed
5,500 RPM
6,300 RPM
Configuration
Bare tool
Kit with 5.0Ah batteries
Weight
9.88 pounds
27.6 pounds
Chuck Size
not listed
1/2 Inch
Choose the first if
- You need to cut thicker material with a larger 7-1/4 inch blade.
- You prefer a lighter tool that weighs under 10 pounds.
- You already own 20V batteries and want a bare tool.
Choose the second if
- You require higher no-load speed for faster cuts in various materials.
- You want a complete kit with 5.0Ah batteries included.
- You need plunge cutting capability for controlled starts.
Verdict
The DEWALT saw is better for users who prioritize depth of cut and portability. The Makita option suits those who want a full kit with higher RPM and plunge features. Your choice depends on whether you value blade size or included accessories.
20V vs 36V Saw Specs
voltage
Edge: Makita 6-1/2-Inch Cordless Plunge Circular Saw
The DEWALT DCS590B operates on a 20V MAX system, while the Makita XPS01PTJ uses two 18V batteries to create a 36V platform. Higher voltage generally translates to more torque and sustained power under load. The Makita’s dual-battery setup provides a distinct advantage in raw electrical potential, allowing it to handle denser materials with less strain on the motor. The DEWALT relies on a single 20V source, which is sufficient for general framing but may struggle with prolonged heavy-duty cuts compared to the 36V architecture.
blade diameter
Edge: DEWALT 20V MAX Cordless 7-1/4-Inch Circular Saw
Blade size directly impacts cutting capacity. The DEWALT features a 7-1/4 inch blade, whereas the Makita uses a smaller 6-1/2 inch blade. This difference is significant for depth of cut. The larger 7-1/4 inch blade on the DEWALT allows for a maximum depth of 2-9/16 inches at 90 degrees. The Makita’s smaller blade limits its vertical cutting depth. If you need to cut through thick lumber or dimensional wood in a single pass, the DEWALT’s larger blade diameter offers a clear practical advantage.
speed
Edge: Makita 6-1/2-Inch Cordless Plunge Circular Saw
No-load speed determines how fast the blade spins, affecting cut quality and speed. The Makita XPS01PTJ reaches 6,300 RPM, while the DEWALT DCS590B tops out at 5,500 RPM. The Makita’s higher RPM can provide cleaner cuts in certain materials and faster material removal rates. However, the Makita also includes variable speed control, allowing you to adjust the RPM between 2,500 and 6,300. The DEWALT does not list variable speed in its specifications. The Makita offers more control and higher maximum speed.
weight
Edge: DEWALT 20V MAX Cordless 7-1/4-Inch Circular Saw
Weight affects fatigue during overhead or extended use. The DEWALT bare tool weighs 9.88 pounds. The Makita kit, which includes two 5.0Ah batteries, weighs 27.6 pounds. Even if you compare the Makita saw body alone, the dual-battery system adds significant mass. The DEWALT is substantially lighter, making it easier to maneuver for long periods. For users prioritizing agility and reduced arm fatigue, the lighter DEWALT is the better choice. The Makita’s heft is a trade-off for its higher power output.
configuration
Edge: Makita 6-1/2-Inch Cordless Plunge Circular Saw
How you buy the tool matters for your initial investment and readiness. The DEWALT is sold as a bare tool, meaning it does not include batteries or a charger. You must already own compatible 20V MAX batteries. The Makita is sold as a kit that includes two 5.0Ah batteries. If you do not have existing Makita 18V X2 batteries, the Makita kit provides everything needed to start cutting immediately. The DEWALT requires additional purchases to become functional.
Choose the Right Circular Saw for You
Users needing deep cuts in thick lumber
Our pick: DEWALT 20V MAX Cordless 7-1/4-Inch Circular Saw
The DEWALT DCS590B offers a maximum cut depth of 2-9/16 inches at 90 degrees. This exceeds the capacity of the Makita model. Its 7-1/4 inch blade provides greater reach. You benefit from the electric brake for safety. The bare tool configuration allows you to use existing 20V batteries. This setup is ideal for heavy framing tasks requiring deep penetration.
Professionals requiring variable speed and precision
Our pick: Makita 6-1/2-Inch Cordless Plunge Circular Saw
The Makita XPS01PTJ features a variable speed dial ranging from 2,500 to 6,300 RPM. This allows you to adjust for different materials. The brushless motor delivers 6,300 RPM for fast cuts. You get a complete kit with 5.0Ah batteries. The plunge design and close-to-wall cutting capability offer versatility. This tool suits detailed work where speed control matters.
Buyers wanting a complete ready-to-use kit
Our pick: Makita 6-1/2-Inch Cordless Plunge Circular Saw
The Makita comes as a kit including two 5.0Ah batteries. You do not need to purchase separate power sources. The 36V platform provides sustained power for extended use. The included batteries ensure you are ready to work immediately. This configuration saves time compared to buying a bare tool. It is the practical choice for those starting with a new system.
| # | Product | Best for | Price |
|---|---|---|---|
| 1 | DEWALT 20V MAX Cordless 7-1/4-Inch Circular Saw | Standard 20V cordless cutting tasks | |
| 2 | Makita 6-1/2-Inch Cordless Plunge Circular Saw | Precise plunge cuts and variable speed control |
DEWALT 20V MAX Cordless 7-1/4-Inch Circular Saw
Best for: Standard 20V cordless cutting tasks
- Voltage
- 20V
- Blade Diameter
- 7-1/4 in.
- Power Source
- Cordless
- Battery Voltage
- 20V
- Max Cut Depth
- 2-9/16 in.
- Maximum Speed
- 5,500 RPM
This DEWALT 20V MAX XR circular saw is a bare-tool unit featuring a brushless motor and a 7-1/4 inch blade. It reaches 5,500 RPM for fast cutting and offers a maximum depth of 2-9/16 inches at 90 degrees. The 9.88-pound weight and electric brake make it suitable for standard framing tasks where high voltage is not required.
- Brushless motor delivers up to 5,500 RPM
- Electric brake stops blade coasting quickly
- 2-9/16 inch max cut depth at 90 degrees
- Lightweight 9.88 pound design
- 20V battery system provides less power than 36V competitors
- 9.88 pound weight is heavier than lighter 20V models
- Sold as a bare tool requiring separate battery purchase
- You need a reliable 20V tool for standard framing
- You already own DEWALT 20V MAX batteries
- You prefer the balance of an electric brake
- You require the cutting power of a 36V system
- You want a complete kit with batteries included
- You need a tool lighter than 9 pounds
Verdict: DEWALT 20V XR Brushless Circular Saw fits users who already have 20V batteries and need reliable power for standard cuts. It is not the right choice if you need the higher output of a 36V system or a lighter tool.
Makita 6-1/2-Inch Cordless Plunge Circular Saw
Best for: Precise plunge cuts and variable speed control
- Voltage
- 36V
- Blade Diameter
- 6-1/2 inch
- Power Source
- Cordless
- Battery Voltage
- 18-Volt X2 (36V)
- Maximum Speed
- 6, 300 RPM
- Motor Type
- Brushless
This Makita 36V plunge circular saw combines two 18V batteries for higher voltage output. It features a brushless motor reaching 6,300 RPM with variable speed control from 2,500 to 6,300 RPM. The 6-1/2 inch blade allows close-to-wall cuts at 11/16 inch. You get a complete kit with 5.0Ah batteries. This setup suits users needing precise plunge cuts and adjustable torque for various materials.
- 36V output from two 18V batteries provides increased power
- Brushless motor delivers 6,300 RPM for maximum performance
- Variable speed dial allows 2,500 to 6,300 RPM adjustment
- Close-to-wall cutting capability at 11/16 inch
- Kit includes 5.0Ah batteries for extended run time
- Heavier build at 27.6 pounds compared to standard 7-1/4 inch saws
- Smaller 6-1/2 inch blade limits maximum cut depth
- Larger physical footprint with 19.6 inch height
- You need precise plunge cuts in thick materials
- You require variable speed control for different wood types
- You want close-to-wall cutting clearance near obstacles
- You prefer a lighter tool for overhead work
- You need a larger 7-1/4 inch blade for deeper cuts
- You want a tool-only purchase without batteries
Verdict: Makita 36V Brushless 6-1/2 in Plunge Circular Saw fits carpenters who prioritize plunge precision and adjustable speed over maximum cutting depth. The 36V system and brushless motor provide reliable power for detailed joinery work.
Specifications side by side
| Spec | DEWALT 20V MAX Cordless 7-1/4-Inch Circular Saw | Makita 6-1/2-Inch Cordless Plunge Circular Saw |
|---|---|---|
| Blade Diameter | 7-1/4 in. | 6-1/2 inch |
| Power Source | Cordless | Cordless |
| Battery Voltage | 20V | 18-Volt X2 (36V) |
| Max Cut Depth | 2-9/16 in. | – |
| Maximum Speed | 5,500 RPM | 6, 300 RPM |
| Motor Type | Brushless | Brushless |
| Configuration | Bare tool | Kit (5.0Ah) |
| Voltage | 20V | 36V |
| Chuck Size | – | 1/2 Inch |
| Battery Capacity | – | 5.0Ah |
| Included Tools | Circular Saw | Circular Saw |
| Set Type | Tool Only | – |
| Dimensions | 15.4 × 9.44 × 9.6 inches | 16 × 12.1 × 19.6 inches |
| Weight | 9.88 pounds | 27.6 pounds |
| Size | STANDARD | 6.5 in |
| Color | Black, Yellow | Multicolor |
| Model | DCS590B | XPS01PTJ |
Frequently asked questions
Can I use 20V batteries with a 36V circular saw?
No. The Makita XPS01PTJ requires two 18V batteries to form its 36V system. You cannot mix 20V batteries into this setup. The DEWALT DCS590B uses its own 20V MAX batteries. Each platform has its own specific battery requirement.
Which saw is better for deep cuts in thick lumber?
The DEWALT DCS590B is better for deep cuts. It features a 7-1/4 inch blade. This allows for a maximum cut depth of 2-9/16 inches at 90 degrees. The Makita model has a smaller 6-1/2 inch blade and less cutting depth.
Does the 36V saw offer variable speed control?
Yes. The Makita XPS01PTJ includes variable speed control. This helps you adjust the blade speed for different materials. The DEWALT DCS590B does not list variable speed in its specifications. It is designed for standard cutting tasks.
Is the Makita saw heavy compared to the 20V model?
Yes. The Makita XPS01PTJ kit weighs 27.6 pounds. The DEWALT DCS590B bare tool weighs 9.88 pounds. The Makita includes two batteries and a charger, adding significant weight. The DEWALT is lighter but requires you to buy batteries separately.
Can I make plunge cuts with the DEWALT saw?
No. The DEWALT DCS590B is a standard circular saw. It does not have a plunge feature. The Makita XPS01PTJ is a plunge circular saw. It allows you to start cuts in the middle of a board for detailed joinery work.
Which saw is lighter for overhead work?
The DEWALT DCS590B is lighter. It weighs 9.88 pounds. The Makita XPS01PTJ weighs 27.6 pounds. The Makita includes batteries and a charger in its weight. The DEWALT is sold as a bare tool, so you add battery weight.
Do both saws have brushless motors?
Yes. Both tools feature brushless motors. The DEWALT DCS590B has a brushless motor. The Makita XPS01PTJ also has a brushless motor. Brushless motors offer better efficiency and longer runtime compared to brushed motors.
See also
Where to buy
at Amazon
Price taken from the listing when this page was written and it can change at any time. We may earn a commission if you buy through this link.
More Circular Saws
See the section
Get our picks by email
New reviews and the prices we spotted, once a week.