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DEWALT 20V MAX* 6-1/2 in. Brushless Cordless vs FLEX 24V Brushless Cordless 6-1/2-Inch In-Line

Updated July 2026 — DEWALT 20V MAX* 6-1/2 in. Brushless Cordless wins on rpm and bevel capacity, FLEX 24V Brushless Cordless 6-1/2-Inch In-Line wins on battery and length.

The DEWALT saw offers superior speed and compatibility, while the FLEX saw excels in cutting capacity and design.

Why DEWALT 20V MAX* 6-1/2 in. Brushless Cordless is better

Price

$193.98 vs $177.66

Speed

4,950 rpm vs unspecified

Battery Compatibility

Compatible with all DEWALT 20V MAX batteries

Why FLEX 24V Brushless Cordless 6-1/2-Inch In-Line is better

Cutting Depth

2-9/16 inches vs 2-1/8 inches

Design

In-line design for better visibility

Runtime

Up to 430 cuts with 5.0Ah battery

Overall score

DEWALT 20V MAX* 6-1/2 in. Brushless Cordless
85
FLEX 24V Brushless Cordless 6-1/2-Inch In-Line
78

Specifications

SpecDEWALT 20V MAX* 6-1/2 in. Brushless CordlessFLEX 24V Brushless Cordless 6-1/2-Inch In-Line
Motor TypeBrushlessSensor-Free Brushless
LED LightYesYes
Electric BrakeYesNo
Dust ChuteOptionalNo
Warranty3-Year5-Year

Dimension comparison

DEWALT 20V MAX* 6-1/2 in. Brushless CordlessFLEX 24V Brushless Cordless 6-1/2-Inch In-Line

Overview of the DEWALT 20V MAX 6-1/2 in. Circular Saw and FLEX 24V In-Line Circular Saw

The DEWALT 20V MAX 6-1/2 in. Brushless Cordless Circular Saw is priced at $193.98, while the FLEX 24V Brushless Cordless 6-1/2-Inch In-Line Circular Saw comes in at $177.66, making it about 8% cheaper. Both saws are designed for efficient cutting, but they cater to different user preferences and cutting styles. The DEWALT saw boasts a powerful brushless motor with a maximum speed of 4,950 rpm, making it suitable for a range of cutting applications. In contrast, the FLEX saw features a unique in-line design that enhances balance and visibility, allowing for more precise cuts.

Cutting Performance

The DEWALT saw delivers impressive cutting performance with its brushless motor, providing optimal cutting capabilities across various materials. It can achieve a maximum cutting depth of 2-1/8 inches at 90 degrees and has a bevel capacity of up to 50 degrees. On the other hand, the FLEX saw offers a superior maximum cutting capacity, capable of cutting through 3x lumber in one pass with a depth of cut of 2-9/16 inches. This feature makes the FLEX saw particularly advantageous for users frequently working with larger materials, enhancing its overall versatility in heavy-duty applications.

Design and Usability

In terms of design, the DEWALT saw is compact and lightweight, which facilitates high maneuverability on the job site. It includes features such as a built-in rafter hook for convenient storage and an LED light for improved visibility during cutting tasks. Conversely, the FLEX saw incorporates an innovative in-line design that provides superior balance and visibility on both sides of the blade, contributing to enhanced control and accuracy during cuts. The ergonomic designs of both saws cater to user comfort but emphasize different cutting experiences.

Features and Functionality

Both saws are equipped with features that enhance their functionality. The DEWALT saw includes a tool-free bevel lever for quick adjustments and an optional dust chute to minimize debris during cutting. Additionally, it is compatible with all DEWALT 20V MAX and FLEXVOLT batteries, adding to its convenience. The FLEX saw boasts the FLEX Advantage, which includes 20% more power with its 24V battery and a sensor-free brushless motor designed to eliminate friction. Users can also expect exceptional runtime, making it capable of performing up to 430 cuts in 2x4 lumber with a 5.0Ah battery.

Battery and Charging

Battery compatibility is a crucial factor for many users. The DEWALT saw is compatible with its entire line of 20V MAX and FLEXVOLT batteries, allowing for versatility depending on the user's existing battery ecosystem. The FLEX saw, on the other hand, is compatible with all FLEX 24V batteries and chargers, but it does not come with a battery or charger included, similar to the DEWALT saw. However, the FLEX saw touts faster charging capabilities, which can be a significant advantage for users who require quick turnaround times between uses.

Safety Features

Safety is paramount in power tools, and both saws incorporate features designed to protect users. The DEWALT saw includes an electric brake that quickly stops the blade after the trigger is released, enhancing user safety during operation. Meanwhile, the FLEX saw’s design allows for improved visibility and control, minimizing the risk of accidental cuts. While both tools prioritize user safety, the specific features they offer cater to different preferences in handling and operational safety.

Portability and Job Site Use

Portability is essential for professionals who frequently move between job sites. The lightweight and compact design of the DEWALT saw makes it easy to transport. Its built-in rafter hook also allows for easy storage on the job site when not in use. The FLEX saw's in-line design and lightweight construction similarly facilitate ease of use, particularly in tight spaces where maneuverability is crucial. Both saws are designed for rigorous job site conditions, but their unique designs may appeal to different user preferences regarding portability and handling.

Which should you buy?

In deciding between the DEWALT 20V MAX 6-1/2 in. Brushless Cordless Circular Saw and the FLEX 24V Brushless Cordless 6-1/2-Inch In-Line Circular Saw, consider your specific cutting needs and preferences. The DEWALT saw, priced at $193.98, offers robust performance and compatibility with existing 20V MAX batteries, making it a solid choice for those who value speed and efficiency. However, if you require a saw capable of handling larger materials with superior balance and visibility, the FLEX saw, priced at $177.66, could be the better option. Ultimately, your choice will depend on whether you prioritize cutting depth and design or cost-effectiveness and runtime.