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Milwaukee M12 FUEL 12-Volt Li-Ion Brushless vs Milwaukee M18 FUEL 18V Lithium-Ion Brushless

Updated July 2026 — Milwaukee M18 FUEL 18V Lithium-Ion Brushless leads on price and rpm.

The Milwaukee M12 FUEL kit is ideal for compact tasks, while the M18 FUEL kit offers a more extensive toolset for heavy-duty applications.

Why Milwaukee M12 FUEL 12-Volt Li-Ion Brushless is better

Price

M12 kit is significantly cheaper at $369.97.

Weight

M12 kit is lighter, making it easier to handle.

Compactness

M12 kit is designed for tight spaces.

Why Milwaukee M18 FUEL 18V Lithium-Ion Brushless is better

Tool Variety

M18 kit includes seven tools for diverse tasks.

Power

M18 kit has advanced features for heavy-duty performance.

Battery Life

M18 kit includes larger 5.0 Ah batteries for longer use.

Overall score

Milwaukee M12 FUEL 12-Volt Li-Ion Brushless
75
Milwaukee M18 FUEL 18V Lithium-Ion Brushless
90

Specifications

SpecMilwaukee M12 FUEL 12-Volt Li-Ion BrushlessMilwaukee M18 FUEL 18V Lithium-Ion Brushless
Hammer Drill12V18V
Impact DriverIncludedIncluded
Recip SawNot IncludedIncluded
Circular SawNot IncludedIncluded
GrinderNot IncludedIncluded

Dimension comparison

Milwaukee M12 FUEL 12-Volt Li-Ion BrushlessMilwaukee M18 FUEL 18V Lithium-Ion Brushless

Overview of the Milwaukee M12 FUEL 12-Volt Combo Kit

The Milwaukee M12 FUEL 12-Volt Li-Ion Brushless Cordless Hammer Drill and Impact Driver Combo Kit is priced at $369.97. This kit is designed for compact tasks and is the most capable and lightweight option in the 12-volt category. It includes a hammer drill and an impact driver, making it versatile for various drilling and fastening applications. The combination of lightweight design and high torque makes it ideal for tight spaces, with the hammer drill delivering up to 350 in. lbs. of torque.

Overview of the Milwaukee M18 FUEL 18V Combo Kit

In contrast, the Milwaukee M18 FUEL 18V Lithium-Ion Brushless Cordless Combo Kit, priced at $1,113.99, offers a more comprehensive toolset with seven tools in total. This kit includes a hammer drill, impact driver, reciprocating saw, circular saw, grinder, mid-torque impact wrench, and an LED work light. The M18 FUEL system boasts advanced technology, including the POWERSTATE Brushless Motor and REDLINK PLUS Intelligence, ensuring optimal performance and longer battery life.

Tool Variety and Functionality

The M12 FUEL kit is a two-tool combo, focusing primarily on drilling and fastening tasks with a hammer drill and an impact driver. This makes it a great choice for those who need a compact and efficient solution for light to medium-duty applications. On the other hand, the M18 FUEL kit shines with its extensive tool variety, offering seven different tools that cater to a wider range of applications. This kit is suited for more demanding tasks requiring a versatile set of tools.

Power and Performance

The M12 FUEL 12-Volt kit delivers impressive performance with its hammer drill achieving 1700 RPM and providing 350 in. lbs. of torque. However, the M18 FUEL kit takes power to another level, with its hammer drill designed for enhanced safety through an auto-stop feature and providing greater torque and performance across its tools. The M18 system is built for heavy-duty tasks, making it suitable for professionals and serious DIY enthusiasts.

Portability and Weight

Portability is a strong suit for the M12 FUEL kit, weighing only 2.8 lbs. for the hammer drill and 3.3 lbs. for the impact driver. This lightweight design makes it easy to handle and reduces fatigue during prolonged use. The M18 FUEL kit, while slightly heavier at 6.9 lbs. for the hammer drill, is still designed to provide balance and comfort. However, for users requiring extended use in tight spaces, the M12 FUEL kit may be more advantageous due to its lower weight.

Pricing and Value

The M12 FUEL kit is priced at $369.97, making it significantly cheaper than the M18 FUEL kit, which costs $1,113.99. This difference of about 67% in price makes the M12 kit an attractive option for those looking for quality without the higher investment. However, the additional tools included in the M18 kit can justify the price for users needing a more comprehensive toolkit for diverse tasks.

Battery Life and Technology

Both kits utilize Milwaukee's REDLITHIUM battery technology, which is known for providing long-lasting power. The M12 kit includes two batteries, offering versatility for smaller jobs, while the M18 kit features two 5.0 Ah batteries that deliver more work per charge and more overall lifespan. The M18 system also includes advanced features like REDLINK PLUS Intelligence, which offers overload protection and ensures optimal performance during heavy applications.

Which should you buy?

Choosing between the Milwaukee M12 FUEL 12-Volt and the M18 FUEL 18V combo kits largely depends on your specific needs. If you're looking for a compact, lightweight solution for light to medium tasks, the M12 kit at $369.97 is a fantastic choice. However, for those who require a versatile and powerful toolset for heavy-duty applications, the M18 kit at $1,113.99 offers greater value with its seven tools and advanced technology. Ultimately, the decision hinges on whether you prioritize portability and cost or extensive functionality and power.