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DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder vs Milwaukee M12 FUEL 12V Lithium-Ion Brushless

Updated July 2026 — DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder wins on power and battery, Milwaukee M12 FUEL 12V Lithium-Ion Brushless wins on sales rank and price.

The DEWALT DCG412B offers excellent value and performance for general use, while the Milwaukee M12 FUEL is better suited for professional applications with advanced features.

Why DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder is better

Price

DEWALT is approximately 47% cheaper than Milwaukee.

Sales Rank

DEWALT has a better sales rank at 10,196.

User-Friendly

DEWALT features tool-free wheel removal for convenience.

Why Milwaukee M12 FUEL 12V Lithium-Ion Brushless is better

Power

Milwaukee has a 0.3 HP motor output.

Versatility

Milwaukee offers 4-mode RPM control.

Battery Tech

Milwaukee uses advanced M12 REDLITHIUM technology.

Overall score

DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” Grinder
85
Milwaukee M12 FUEL 12V Lithium-Ion Brushless
75

Specifications

SpecDEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” GrinderMilwaukee M12 FUEL 12V Lithium-Ion Brushless
Motor TypeBrushedBrushless
RPM8000Variable
Handle Type2-positionStandard
Weight5.5 lbs3.5 lbs
Battery Voltage20V12V

Dimension comparison

DEWALT DCG412B 20V MAX* Lithium Ion 4-1/2” GrinderMilwaukee M12 FUEL 12V Lithium-Ion Brushless

Introduction to Angle Grinders

When it comes to choosing the right angle grinder, the DEWALT DCG412B and the Milwaukee M12 FUEL are two strong contenders, each with its unique strengths. The DEWALT grinder is priced at $127.99, making it about 47% cheaper than the Milwaukee, which retails for $239.95. Both tools aim to provide high performance and efficiency, but understanding their differences can help you make an informed decision.

Power and Performance

Power is a crucial factor when selecting an angle grinder. The DEWALT DCG412B features an 8,000 rpm motor that delivers high power for cutting and grinding applications, making it suitable for various tasks. In contrast, the Milwaukee M12 FUEL boasts a 0.3 HP motor output and claims to have 20% more power than pneumatic options. This performance level is particularly geared towards professional service mechanics who require consistent power in tight spaces. While both grinders offer substantial power, the Milwaukee's specifications indicate it is designed for more demanding applications.

Design and Usability

Design and usability play a significant role in the user experience. The DEWALT grinder includes a Quick-Change Wheel Release, allowing for tool-free wheel removal, which is a convenient feature for users who frequently change accessories. Additionally, the tool-free guard allows for easy adjustments. Meanwhile, the Milwaukee features a compact right-angle design, making it easier to access tight spaces. It also has a responsive variable-speed trigger, providing users with greater control over their grinding tasks. Both designs prioritize user-friendliness, yet the Milwaukee's compactness may give it an edge in accessibility.

Battery Technology

Battery technology is another important aspect to consider. The DEWALT DCG412B operates on a 20V MAX lithium-ion battery, which contributes to its extended run-time. On the other hand, the Milwaukee M12 FUEL utilizes the M12 REDLITHIUM battery technology, which is designed to offer optimum performance for a 12V system. While both tools rely on lithium-ion batteries, the DEWALT's higher voltage may translate to longer operational periods without the need to recharge, particularly for heavy-duty tasks.

Versatility and Control

When it comes to versatility, the DEWALT grinder is equipped with a 2-position side handle, offering greater control and comfort during use. This feature is beneficial for users who need to operate the grinder in different orientations. In comparison, the Milwaukee's M12 FUEL comes with a 4-mode RPM control, allowing users to adjust speeds based on the task at hand. This flexibility can enhance precision, especially for detailed work. Both grinders excel in providing control, but the Milwaukee's multiple speed settings may appeal more to users requiring varied application capabilities.

Price Comparison

Price is a significant consideration for many buyers. The DEWALT DCG412B is priced at $127.99, while the Milwaukee M12 FUEL costs $239.95. This means that the DEWALT is approximately 47% less expensive than the Milwaukee. While the price difference is substantial, potential buyers should weigh this against the performance features each grinder offers. The DEWALT grinder provides excellent value for general use, while the Milwaukee may justify its higher price with advanced features aimed at professional applications.

Sales Rank and Popularity

Sales rank can be an indicator of a product's popularity and user satisfaction. The DEWALT DCG412B holds a sales rank of 10,196, suggesting a solid level of market acceptance. In contrast, the Milwaukee M12 FUEL has a sales rank of 48,356, which may indicate a narrower customer base or less frequent purchases. For those prioritizing tried-and-true products, the DEWALT grinder may present a more appealing choice based on its higher sales performance.

Which should you buy?

Ultimately, the choice between the DEWALT DCG412B and the Milwaukee M12 FUEL depends on your specific needs. If you are looking for a cost-effective option with high power and user-friendly features, the DEWALT grinder is the clear winner at $127.99. However, if you require a tool with enhanced power, versatility, and advanced battery technology for professional applications, the Milwaukee may be worth the investment at $239.95. Each tool has its strengths, so consider your primary use cases to make the best decision for your grinding tasks.