FLEX 24V Brushless Cordless 6-1/2-Inch In-Line vs Milwaukee M18 Cordless Lithium-Ion 6-1/2" Circular Saw -
Updated July 2026 — FLEX 24V Brushless Cordless 6-1/2-Inch In-Line wins on runtime and power, Milwaukee M18 Cordless Lithium-Ion 6-1/2" Circular Saw - wins on price and durability.
The FLEX offers advanced features and performance, while the Milwaukee provides reliable cutting at a lower price.
Why FLEX 24V Brushless Cordless 6-1/2-Inch In-Line is better
Power
20% more power with 24V lithium battery
Runtime
Up to 430 cuts in 2x4 lumber
Design
World's first in-line design for better visibility
Why Milwaukee M18 Cordless Lithium-Ion 6-1/2" Circular Saw - is better
Price
Lower cost at $94.00
Speed
3,500 RPM for quick cuts
Durability
Magnesium guards for superior protection
Overall score
Specifications
| Spec | FLEX 24V Brushless Cordless 6-1/2-Inch In-Line | Milwaukee M18 Cordless Lithium-Ion 6-1/2" Circular Saw - |
|---|---|---|
| Motor Type | Brushless | Brushed |
| Cut Depth | 2-9/16" | 2-1/2" |
| RPM | 3,500 | 3,500 |
| Weight | 7.5 lbs | 6.5 lbs |
| Warranty | 5 years | 3 years |
Dimension comparison
Overview of the FLEX 24V Brushless Cordless Circular Saw
The FLEX 24V Brushless Cordless 6-1/2-Inch In-Line Circular Saw is designed for advanced cutting performance with its innovative in-line design. Priced at $177.66, it offers a unique balance and visibility for precision cuts. The saw features a sensor-free brushless motor, ensuring efficient power usage and eliminating friction. In contrast, the M18 Cordless Lithium-Ion 6-1/2" Circular Saw from Milwaukee is priced at $94.00 and provides a powerful cutting capability with 3,500 RPM, making it suitable for various applications. Both tools, while targeting similar users, cater to different preferences in price and functionality.
Performance Comparison
The FLEX circular saw stands out with its advanced features, delivering 20% more power with its 24V lithium battery. This translates to increased efficiency and runtime, capable of making up to 430 cuts in 2x4 lumber with a 5.0Ah battery. Conversely, the Milwaukee saw's motor operates at a robust 3,500 RPM, allowing quick cuts through tough materials like LVL headers. While the FLEX focuses on runtime and power efficiency, the Milwaukee emphasizes speed and durability, appealing to professionals who need rapid cutting solutions.
Design and Ergonomics
The FLEX saw boasts a world-first in-line design, enhancing balance and offering clear visibility on both sides of the blade, which aids in making precise cuts. Additionally, it features a built-in LED light for improved visibility. The Milwaukee saw, on the other hand, is designed with a soft-grip handle that ensures comfort during extended use. Its magnesium guards provide superior durability and protection for the blade. Each design has its strengths, with FLEX prioritizing visibility and balance, while Milwaukee emphasizes user comfort and ruggedness.
Battery and Runtime
A notable distinction lies in the battery performance and compatibility. The FLEX tool is part of a 24V system, promising exceptional runtime due to its advanced THERMA-TECH heat management system. This system allows for a 25% longer runtime compared to traditional models. The FLEX saw is compatible with all FLEX 24V batteries, although the battery and charger are sold separately. In contrast, the Milwaukee saw operates on an M18 battery system, which is widely recognized for its reliability, but does not specify runtime performance as thoroughly as FLEX.
Price Analysis
At $177.66, the FLEX saw is approximately 89% more expensive than the Milwaukee saw, which is priced at $94.00. This price difference reflects the advanced technology and features integrated into the FLEX model. The Milwaukee saw's lower price point makes it an attractive option for those seeking a reliable circular saw without the additional investment. However, the FLEX's advanced capabilities may justify the higher cost for users who require enhanced performance and durability in their cutting tasks.
Target Audience
The FLEX circular saw is tailored for professionals looking for high performance and advanced features in their tools. Its capabilities make it ideal for those who frequently work with heavy materials and require precise cuts. The Milwaukee saw, with its more accessible price and robust performance, appeals to both DIY enthusiasts and professionals who need a reliable tool for general carpentry and construction tasks. This distinction in target audience highlights the FLEX as a premium choice, while Milwaukee offers a more budget-friendly option.
Sales Rank and Market Presence
In terms of market presence, the Milwaukee saw ranks significantly higher in sales, holding a bestseller rank of 17,973 compared to the FLEX's rank of 108,816. This suggests that the Milwaukee model has a more established customer base and is favored by users for its reliability and performance. The FLEX, while innovative, may have a niche market appeal due to its unique features that cater specifically to professionals seeking high-end performance.
Which should you buy?
Choosing between the FLEX 24V Brushless Cordless Circular Saw and the M18 Cordless Lithium-Ion Circular Saw ultimately depends on your specific needs and budget. If you prioritize advanced features, runtime, and precision cutting, the FLEX is a solid investment at $177.66. However, if you need a dependable, budget-friendly tool for general use, the Milwaukee saw at $94.00 is an excellent choice. Consider your cutting requirements and whether the advanced capabilities of the FLEX justify the higher price before making your decision.

