If you’ve spent any time maintaining a garden or managing outdoor spaces, you’ve likely come across grass trimmers and brush cutters. While they might look similar at first glance—and are often lumped into the same category—they serve very different purposes. Understanding the key differences between these two tools can save you time, effort, and even money, helping you choose the right tool for the job. In this blog, we’ll break down what sets them apart and when you should use each one.
What is a Grass Trimmer?
Also known as a strimmer or line trimmer, a grass trimmer is a lightweight, handheld garden tool used for tidying up the edges of lawns and trimming grass in areas your lawn mower can’t reach. Grass trimmers use a rapidly spinning nylon line to cut grass and soft vegetation. They are typically battery-powered, electric, or petrol-driven, and come in a range of sizes to suit different gardens.
Grass trimmers are designed for precision. They’re ideal for:
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Edging around flower beds, patios, and fences
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Tidying up along walls or posts
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Maintaining small to medium-sized lawns
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Cutting grass in tight or awkward spaces
They’re best suited for light-duty tasks, and their design prioritises manoeuvrability and ease of use over brute strength.
Recommended Grass Trimmers
Milwaukee M18 Grass Trimmer M18BLLT-0
The Milwaukee M18BLLT M18 Brushless Grass Trimmer is built to deliver powerful, cordless cutting performance for tackling even the toughest overgrowth. Reaching full throttle in under 1 second, it provides the muscle to clear thick brush with ease while offering the control and efficiency professionals demand. Equipped with a two-speed variable trigger, this trimmer allows you to switch between maximum performance (up to 6200 RPM) and extended runtime (up to 4600 RPM), depending on your task. The adjustable cutting swath of 35 cm to 40 cm ensures versatility for both precision trimming and wider coverage.
Features
- The M18 brushless grass trimmer has the power to clear thick brush and reaches full throttle in under 1 second
- Up to 4600 RPM in first mode and 6200 RPM in second mode
- 2-speed variable trigger allows the user to choose between higher performance or extended run time
- Adjustable cutting swath of 35 cm – 40 cm
- Up to 1 hour of run time with M18™ High Output 8.0 Ah battery pack
- Easy load trimmer head and adjustable auxiliary handle for optimum user comfort and control
- Brushless motor, Redlithium battery pack and Redlink electronic deliver power, run time and durability
- Flexible battery system: works with all Milwaukee M18 batteries
DeWalt 18v XR Split Shaft Brushless Cordless String Grass Trimmer (Body Only) DCM561PBS-XJ
The DeWalt DCM561PBS-XJ 18V XR Split Shaft Brushless Cordless String Trimmer delivers professional-grade performance for demanding landscaping tasks. Designed for fast and efficient trimming, it features a 33cm cutting swath and a powerful brushless XR motor for enhanced efficiency, durability, and runtime. Ideal for trimming grass, cutting back weeds, and light shrub pruning, this grass trimmer is built to handle large areas and tough terrain with ease. The patented gear drive system maintains performance under load, while the durable 2mm twisted line and bump feed system ensure continuous cutting without interruption.Equipped with a variable speed trigger and two-speed settings, you can tailor power output to match your application—maximizing either performance or battery life. The overmoulded handle with a contoured grip and the well-balanced split shaft design provide superior comfort and control during extended use.
Features
- 400 MWO Brushless Motor patented gear drive design, providing more torque and maintaining cut speed under load
- Fully variable trigger, offering total power control to the professional user
- Padded rubber aux handle for optimal user comfort
- Two-speed control, delivering versatility to the user for extended runtime or increased performance
- Professional style guard, for more cut access and better visibility
- Excellent performance with the added convenience of being battery powered
Milwaukee M18 Fuel Quik-Lok Power Head with Grass Trimmer Kit M18FOPHLTKIT2-0
The Milwaukee M18 Fuel Quik-Lok Power Head with Grass Trimmer KitM18FOPHLTKIT2 is a high-performance, versatile outdoor power solution designed for professionals and demanding users. Featuring a 30% increase in power and thermal performance, this advanced system delivers unmatched capability for tough landscaping applications. Powered by Milwaukee’s M18 Fuel technology, the Quik-Lok system allows you to swap between multiple attachments (sold separately), making it ideal for trimming, edging, pruning, and more—all from a single power head. The included grass trimmer attachment ensures fast and efficient cutting, making this kit perfect for clearing overgrowth and maintaining clean lawn edges. With 3-speed settings and a variable speed trigger, you have complete control to adapt power to the task at hand. Reaching full throttle in under 1 second, the M18FOPHLTKIT2 ensures immediate power when you need it. For maximum comfort, the tool features an adjustable auxiliary handle, shoulder strap, and carrying ring—allowing you to customize the setup for reduced fatigue during extended use.
Features
- 30% increase in power and thermal performance: unlocks unmatched capabilities for superior performance
- 3-speed settings with variable speed trigger best suited for numerous applications
- Versatile outdoor power equipment system, powered by a single power head
- Delivers the capability to swap between multiple attachments to complete a wide range of applications
- Full throttle in under 1 second for immediate power delivery
- Adjustable auxiliary handle, strap and carrying ring help set the tool up for the optimum user comfort and control
- The DNA of our Fuel platform redefines the balance of cordless technologies. MILWAUKEE’s POWERSTATE™ brushless motor, REDLITHIUM™ battery pack and REDLINK PLUS™ electronic intelligence delivering outstanding power, run time and durability
- Flexible battery system: works with all Milwaukee M18 batteries
Einhell 36V Cordless Grass Trimmer Body Only 3411300
The Einhell 36V Cordless Grass Trimmer 3411300 is a powerful and ergonomic solution for precise lawn and garden maintenance. Designed with a front-mounted motor, it delivers optimal power transmission and a well-balanced feel, making it easier to handle during extended use. Featuring a lightweight aluminium long handle and an infinitely adjustable second handle, this trimmer offers excellent comfort and control. The electronic speed control ensures consistent cutting performance, while the automatic jog line feed system keeps the 30cm cutting width running smoothly with minimal interruption. The split shaft design allows for quick disassembly, making transport and storage simple and space-saving. Additional features like the softgrip handle, high-quality shoulder strap, and Flowerguard enhance user comfort and safety. Also included is a wall holder for convenient storage when not in use.
Features
DeWalt DCM571N-XJ 54v FlexVolt Cordless String Trimmer / Brush Cutter
The DeWalt DCM571N-XJ 54V FlexVolt Cordless String Trimmer / Brush Cutter delivers petrol-equivalent performance with the freedom and convenience of cordless power. Designed for both light trimming and heavy-duty brush clearing, this versatile tool features a 38cm string trimmer swath and a 25cm Tri Tip brush cutter blade, giving you the flexibility to tackle everything from grass edges to thick undergrowth with ease. Powered by a high-efficiency 54V XR Brushless Motor, the DCM571N-XJ ensures powerful, consistent performance and long-term durability. Its patented gear drive system maintains speed under load, helping you power through dense vegetation without stalling. Equipped with a 2mm twisted line and bump feed system, plus a convenient QUICKWIND™ spool for fast line loading, this tool is designed to keep you working efficiently. The variable speed trigger and Hi/Lo power settings allow you to tailor the output to the task, giving you full control and optimised runtime.
Features
- Fast cutting – 38cm cutting swathe for fast job completion over large areas
- Includes Brush Cutter adapter kit and Brush Knife – everything from simple grass trimming to heavy duty clearing workHigh efficiency
- Brushless motor with metal motor housing – Longer runtime, longer life, more durability and efficiency
- Supplied with 2.0mm twisted line (2.5mm twisted line accessory available) for fast, efficient cutting.
- Hi/Low Speed Control with variable speed – Low = 0-5,100, High = 0-5,500
- Enclosed and durable Xenoy™ battery housing
- Total assembled length 1.8m
- Well balanced weight 3.6kg
- Shoulder strap included
What is a Brush Cutter?
A brush cutter, on the other hand, is a much more robust and powerful tool. Instead of a nylon line, brush cutters are often fitted with metal blades or heavy-duty cutting attachments designed to tackle thick vegetation. While some models are petrol-powered, battery and electric options are also available, often as part of modular systems where the same power unit can be used with different attachments.
Brush cutters are built for heavy-duty work, and are ideal for:
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Cutting through dense weeds, overgrowth, and brambles
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Clearing small saplings and tough brush
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Maintaining rough or uneven terrain
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Dealing with long-neglected areas of land
These machines often feature more powerful motors, straight shafts, and bike-style handlebars for greater control during demanding tasks.
Recommended Brush Cutters
Milwaukee M18 Fuel M18F2BCU Dual Battery Brush Cutter
The Milwaukee M18 FUEL M18F2BCU Dual Battery Brush Cutter is a powerful, high-performance solution for clearing dense grass, tough weeds, and thick brush. Powered by M18 FUEL™ technology, it delivers consistent cutting speed even in the most demanding applications without bogging down. With instant throttle response, users get ultimate control and increased productivity. It comes equipped with both a trimmer head and a 3-tooth brush cutter blade, making it ideal for a variety of heavy-duty tasks. The two-speed modes allow you to choose between maximum power or extended runtime, while the adjustable bike handle and ergonomic clamp system ensure a comfortable working position.
Features
- Powerful and robust brush cutter designed to clear high and dense grass, weeds and thick brush
- M18 Fuel technology allows the tool to maintain speed in the most demanding applications without bogging down
- Instantaneous throttle response for ultimate control and increased productivity
- Supplied with a trimmer head and a 3-tooth blade to take on more demanding applications
- Two speed modes allow the user to choose between maximum performance or extended run time
- Adjustable clamping device allows the user to quickly adjust the bike handle for an ergonomic working position
- Optimised guard design for the best material containment
- The DNA of our Fuel platform redefines the balance of cordless technologies. MILWAUKEE’s POWERSTATE™ brushless motor, REDLITHIUM™ battery pack and REDLINK PLUS™ electronic intelligence delivering outstanding power, run time and durability
- Flexible battery system: works with all Milwaukee M18 batteries
Draper 32cc Petrol Strimmer & Brush Cutter 80880
This Draper 32cc Petrol Strimmer & Brush Cutter is a high-performance, heavy-duty tool designed to take on demanding garden and landscaping tasks with ease. Fitted with a reliable 32.5cc two-stroke petrol engine delivering 1000W of cutting power, this machine is ideal for tackling thick grass, stubborn weeds, and dense brush. Designed for ease of use, it features a choke for smooth starting, an on/off switch, and a safety throttle lever with lock-on function to ensure safe and efficient operation. The ergonomic bike-style handle and included padded shoulder harness with a quick-release mechanism offer improved control and comfort during long periods of use. This versatile tool includes a three-tooth metal brush cutter blade for clearing heavy growth and a “tap and go” dual line spool for regular strimming, making it suitable for a wide range of cutting tasks. It also comes with essential accessories, including assembly tools, a 0.5L mixing bottle for your fuel, and a shoulder strap for convenience. With a generous 0.9L fuel tank and a cutting width of 440mm, the Draper 32cc Petrol Strimmer & Brush Cutter is built for maintaining large areas efficiently, offering the perfect balance of power, precision, and user comfort.
Features
- 2 stroke petrol engine
- Choke for easy starting
- On/off switch with safety throttle lever and lock on for starting
- Bike handle for comfortable use
- Shoulder harness with ‘quick release’ mechanism
- Supplied with a three-tooth brush cutting blade, “tap and go” double line spool, assembly tools, 0.5L two-stroke mixing bottle and a shoulder strap/harness
SIP 08230 31cc 4-Stroke Petrol Brush Cutter / Strimmer
The SIP 31cc 4-Stroke Petrol Brush Cutter with Grass Trimmer is a professional-grade landscaping tool powered by a robust 4-stroke engine, eliminating the need for fuel mixing and ensuring cleaner emissions, higher fuel efficiency, reduced noise, and lower vibration. Combining the power of a brush cutter and the precision of a strimmer, this reliable tool features a balanced and ergonomic bullhorn design for long-term use. Ideal for contractors, tradespeople, and groundskeepers, it is perfect for clearing overgrown brush, weeds, thick grass, and maintaining lawns in commercial, agricultural, and residential spaces.
Features
- Powerful 31cc 4-stroke engine eliminates fuel mixing for greater performance
- Delivers cleaner emissions, greater fuel efficiency, lower noise and reduced vibration
- Professional-grade landscaping tool built to withstand heavy everyday usage
- Positive drive spline connection with quick-release attachment mechanism
- Interchangeable and highly functional brush cutter and grass trimmer attachments
- Asymmetric bullhorn handlebar design for comfortable use over longer periods
Milwaukee M18FBCU-0 M18 Brush Cutter Body Only
The Milwaukee M18FBCU M18 Brush Cutter & Grass Trimmer is a powerful and designed for clearing grass, weeds, thick brush, and saplings up to 3 cm in diameter. It reaches full throttle in under 1 second, delivering instant power and control. This brush cutter comes with a trimmer head for a 35-40 cm cutting swath and a 23 cm blade with a 4-tooth design for demanding applications. It features two-speed modes for maximum performance or extended run time, ergonomic bike handle design, double shoulder harness for comfort, and an optimized guard for excellent material containment.
Features
- Powerful brush cutter designed to clear grass, weeds, thick brush and saplings up to 3 cm diameter
- Full throttle in under 1 second for instantaneous power and ultimate control
- Supplied with a trimmer head for a 35 – 40 cm cutting swath and a 23 cm blade featuring a 4-tooth design to take on more demanding applications
- Two speed modes allow the user to choose between maximum performance or extended run time
- Great ergonomics from the bike handle design and double shoulder harness allowing for more user comfort
- Optimised guard design for the best material containment
- The DNA of our Fuel platform redefines the balance of cordless technologies. MILWAUKEE’s POWERSTATE™ brushless motor, REDLITHIUM™ battery pack and REDLINK PLUS™ electronic intelligence delivering outstanding power, run time and durability
- Flexible battery system: works with all Milwaukee M18 batteries
Key Differences Between Grass Trimmers and Brush Cutters
Let’s break down the main differences in a side-by-side comparison:
| Feature | Grass Trimmer | Brush Cutter |
|---|---|---|
| Cutting Mechanism | Nylon line | Metal blade or heavy-duty attachment |
| Power | Lower power, suitable for light trimming | Higher power, suitable for dense vegetation |
| Weight | Lightweight and easy to manoeuvre | Heavier, built for durability and strength |
| Ideal Use | Lawn edging and grass trimming | Clearing brush, thick weeds, and saplings |
| Ease of Use | User-friendly, minimal training required | May require more skill and strength to use |
| Versatility | Best for soft vegetation | Can handle both soft and tough vegetation |
When Should You Use a Grass Trimmer?
Use a grass trimmer when your main concern is lawn maintenance and precision work. If you’re just looking to tidy up the borders of your lawn or trim around obstacles like trees and garden furniture, a grass trimmer is more than sufficient. They’re also quieter, lighter, and easier to store—making them ideal for smaller gardens or homeowners who want a quick, convenient tool for touch-ups.
Choose a grass trimmer if:
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You have a small to medium garden
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You need to trim edges and narrow spaces
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You want something lightweight and easy to use
When Should You Use a Brush Cutter?
Use a brush cutter when you need to tackle more aggressive vegetation that a standard grass trimmer can’t handle. This might include thick weeds, nettles, woody plants, or even young saplings. Brush cutters are commonly used in larger gardens, farmland, or commercial landscaping where vegetation has been left unchecked or needs regular heavy-duty maintenance.
Choose a brush cutter if:
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You need to clear dense overgrowth or brush
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You’re working on uneven, rural, or overgrown land
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You want a tool that can handle both trimming and clearing
Can One Tool Do Both Jobs?
Some modern tools offer interchangeable attachments, allowing you to switch between a trimmer line head and a brush cutter blade. These multi-tools provide a great solution for users who need versatility without buying two separate machines.
However, keep in mind that while a brush cutter can technically handle light trimming, it may feel too heavy and cumbersome for regular lawn care. Likewise, using a grass trimmer for heavy-duty work can lead to ineffective cutting, excess wear, or even damage to the tool.
Choosing between a grass trimmer and a brush cutter comes down to understanding your garden’s specific needs. For neat lawns and clean edges, a grass trimmer is the tool of choice. But if you’re facing unruly growth, thick brush, or more demanding terrain, a brush cutter offers the strength and durability you need.
Knowing when and where to use each tool ensures your outdoor maintenance is efficient, effective, and tailored to the task—keeping your garden or landscape in top shape all year round.
