The Best String Trimmers

Keeping your yard tidy and weed-free can be tough, especially if you don’t have the right tools for the job. A good string trimmer can make your life a whole lot easier. This handy tool is great for obliterating weeds in hard-to-reach places and cutting around fences, lawns, and beds.

We reviewed dozens of string trimmers to identify the best of the best, based on factors including Amazon reviews, price, features, and usability. We then narrowed our search down to 5 of the best string trimmers that are perfect for any keen gardener.

Top Pick
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BLACK+DECKER LST300

A powerful, battery-powered string trimmer with professional features and a user-friendly design.

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We chose the Black+Decker LST300 as our top pick for gardeners. This string trimmer stood out from the pack because it’s reasonably priced, simple to use, and powerful enough to trim and edge quickly and easily. These benefits, coupled with a 2-year limited warranty from the industry-leading manufacturer, make it a smart buy for gardeners looking for a tool they can rely on.

The Top-Rated String Trimmers

Editor's PicksBrandRating
Best OverallBLACK+DECKER LST300 4.2
Runner UpWorx WG163 GT 3.0
4.2
Best Budget BuyBLACK+DECKER LST2014.2
Best Electric String TrimmerDEWALT DCST920B4.1
Best Gas String TrimmerHusqvarna 128LD 4.1

*Ratings are from Amazon at the time of publication and can change

Our Top Pick: BLACK+DECKER LST300

The Black+Decker LST300 is a versatile string trimmer that will please most gardeners. Stand out features include a PowerDrive Transmission that delivers more power from the motor to the cutting string, a 2-in-1 design that switches from trimmer to edger in seconds, and Runtime Extension Technology that allows you to use the tool for extended periods of time.

The LST300 has a lightweight design and a fully adjustable handle for ease of use. It also features a 12-inch cut swatch and an Automatic Feed Spool that ensures continuous work without bumping. Reviewers say the trimmer is compact, easy to assemble, and suitable for tackling thick patches of weeds.

BLACK+DECKER LST300 Key Features: 

  • PowerDrive Transmission
  • 2-in-1 design that switches from trimmer to edger
  • Runtime Extension Technology
  • Lightweight design with a fully adjustable handle
  • 12-inch cut swath
  • Automatic Feed Spool that ensures continuous work without bumping
  • 20V lithium battery

Our Runner Up Pick: Worx WG163 GT 3.0

Runner Up
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Worx WG163 GT 3.0

An ultra-lightweight, ergonomic trimmer with a 2-in-1 function for trimming and edging.

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$99.99 USD

The Worx WG163 GT 3.0 is an excellent choice for gardeners looking for an all-in-one tool to trim and edge their yard. It features an ultra-lightweight, ergonomic design, and converts from a trimmer to an in-line edger in seconds without the use of tools.

One of the key features of this trimmer is the inclusion of two 20V cordless Max lithium power batteries. This means that one battery can be charged while the other is in use. The WG163 GT 3.0 also features a 12-inch cutting diameter with Innovative Command Feed spool system for instant line feeding, and an adjustable space guard that helps protect vegetation and acts as an edger guide.

Worx WG163 GT 3.0 Key Features: 

  • 2-in-1 function for grass trimming and edging
  • Ultra-lightweight, ergonomic design
  • Two 20V cordless Max lithium power batteries included
  • 12-inch cutting diameter with Innovative Command Feed spool system
  • Adjustable space guard

Best Budget Pick: BLACK+DECKER LST201

Best for Budget
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BLACK+DECKER LST201

A lightweight, adjustable trimmer and edger that delivers flexibility and comfort.

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$69.00 USD

Despite its wallet-friendly price, the BLACK+DECKER LST201 has a range of handy features including easy conversion from trimmer to wheeled edger, Automatic Feed Spool, an adjustable handle for user comfort, and a 20V MAX Lithium Ion battery that holds its charge for up to 18 months.

The full kit includes the LST201 cordless trimmer and edger, an LBXR20 20V MAX Lithium Ion battery with charger, Automatic Feed Spool, and a guard. This all-in-one string trimmer system achieves precision results on a budget.

BLACK+DECKER LST201 Key Features: 

  • Converts from trimmer to wheeled edger
  • Automatic feed Spool
  • Adjustable height and handle
  • 20V MAX Lithium Ion 1.5Ah battery included

Best Electric String Trimmer: DEWALT DCST920B

Best Electric String Trimmer
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DEWALT DCST920B

A brushless string trimmer with precision power control.

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$149.00 USD

The DEWALT DCST920B is a powerful string trimmer with a raft of professional features. This model comes complete with a brushless motor for efficiency and durability, variable trigger with speed control to power through tough overgrowth, and a patented gear design to provide more torque and maintain cut speed under load.

The trimmer is lightweight, compact, and easy to maneuver. Reviewers commented that it holds up surprisingly well compared to more powerful gas string trimmers. This product requires a 20V MAX 5.0Ah battery which is sold separately.

DEWALT DCST920B Key Features: 

  • Brushless motor
  • Variable trigger with speed control
  • Patented gear design
  • Easy to maneuver and puts less stress on the user

Best Gas String Trimmer: Husqvarna 128LD

Best Gas String Trimmer
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Husqvarna 128LD

A powerful gas string trimmer with a 28cc engine.

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$219.95 USD

If you’re looking for a gas string trimmer, we recommend the Husqvarna 128LD. This powerful trimmer has a lightweight, hardworking design that can quickly and easily tackle a range of outdoor jobs. And thanks to its unique Smart Start function, it’s ready to get to work when you are.

The 128LD features a 28cc engine and a 17 inch cutting width. It’s designed to transform into a variety of garden tools including a pole saw, tree pruner, and hedge trimmer with the addition of attachments that are sold separately.

Husqvarna 128LD Key Features: 

  • Powerful 28cc engine
  • Smart Start function
  • A versatile, multi-task tool
  • 17-inch cutting width

Who Should Buy a String Trimmer

If you have a yard that needs taking care of, a string trimmer is an essential piece of kit. Unlike mowers that are designed to cut large areas of grass, trimmers are best for tackling patches of overgrowth. They are also indispensable for cutting neat edges around walkways, lawns, fences, and flower beds.

Some string trimmers can be converted into edgers, making them a handy all-in-one tool for trimming and precision edging. Our article, The Best Trimmers And Edgers, is a good place to start if you’re looking for a standalone edging tool.

String trimmers are designed to be light and portable, so they’re easy to use when your lawn needs a quick tidy up. They’re convenient, good value for money, and will keep your yard looking neat and well-tended throughout the year.

Top Pick
Buy Now
BLACK+DECKER LST300

A powerful, battery-powered string trimmer with professional features and a user-friendly design.

buy now

Important Features to Consider

A string trimmer should have a few important features. Here’s what to consider when selecting a string trimmer that’s right for you:

  • Gas or electric. There are two main types of string trimmers: gas and electric. Gas string trimmers are generally the more powerful of the two. They have small gas-powered engines that make them robust enough to trim back even thick patches of overgrowth with ease. Because of their combustion engines, gas trimmers can be noisy and emit a lot of fumes. Although usually less powerful, electric string trimmers are significantly quieter than gas string trimmers. Corded or battery-powered versions are available, and they are often lightweight and easy to use.
  • Automatic or bump feed. Electric string trimmers are available in two types: automatic or bump feed. Bump feed trimmers require the user to bump the head of the trimmer on the ground to release more line. Automatic feed trimmers will release more line automatically whenever needed. Many modern electric string trimmers feature automatic feeds to make them easier to operate. Although they require extra effort to use, some people prefer bump feed trimmers as they may need less maintenance over the long term.
  • Size and weight. It’s important to consider the size and weight of a string trimmer before making a purchase. Most trimmers are adjustable by height, but many can be heavy and difficult to maneuver for some people, especially the elderly and those with mobility or joint issues. Check the manufacturer’s information to help you decide which trimmer is the best size and weight for you.
  • Cutting width. String trimmers have cutting widths that are expressed in inches. A larger cutting width will help you get the job done faster, so it’s worth considering when you purchase your trimmer. String trimmers with a cutting width of 12 inches tend to be lightweight and portable, and are great for small yards. On the other end of the spectrum, trimmers with a 17 inch cutting width will be heavier machines that are more suited to larger yards.
  • Conversion from trimmer to edger. Many models of string trimmer can be converted from a trimmer into an edger. This is a useful, time-saving feature that allows you to cut more precise edges around your lawn, beds, walkways, and other areas of your yard. If you’re shopping for this feature, check reviews and product information to make sure that the string trimmer you select can be easily converted without using tools.

Frequently Asked Questions

What is a string trimmer and how does it work?

A string trimmer is a power tool that is designed to cut through grass and other plants. It is particularly useful for cutting around objects such as trees and fences. String trimmers are powered by electricity or gas and cut with a flexible monofilament line instead of a blade.

How do you use a string trimmer without breaking the line?

Avoid crowding the trimmer head into an area if you are working near a hard surface or tackling a tough patch of vegetation. Instead, use only the tip of the line to cut. Check the line of your string trimmer after each use for signs of wear and tear. The line will naturally wear down with continued use and will need to be replaced periodically.

Do you need safety gear when using a string trimmer?

Yes. Debris from a string trimmer can cause injury if you’re not protected by safety gear. Safety glasses are particularly important as your eyes are at risk of being injured by flying debris. It’s also important to wear protective gloves, closed toed shoes or boots, and thick clothing. If you are operating a string trimmer that emits a lot of noise, hearing protection will prevent damage to your ears.

How do you replace the string in a string trimmer?

Each string trimmer is different, so make sure to read the manufacturer’s instructions before attempting to replace the string. Always remember to turn off your trimmer’s engine in preparation for maintenance to prevent accidents.

Other String Trimmers We Reviewed

Top Pick
Buy Now
BLACK+DECKER LST300

A powerful, battery-powered string trimmer with professional features and a user-friendly design.

buy now

We looked at 20 other string trimmers. Even though they didn’t make our 5 best string trimmers list, they’re the best of the rest and each is still a great option for gardeners. The information you’ll need to compare each one is included with the listing.

Cordless Electric String Trimmers

BLACK+DECKER LST140C

BLACK+DECKER LST140C

An efficient and reliable string trimmer from BLACK+DECKER with power drive high-torque transmission and an automatic feed spool.

Key Features: 

  • Power drive high-torque transmission for efficient cutting
  • Automatic feed spool
  • Converts from trimmer to edger in seconds
  • Powered by a 40V battery

BLACK+DECKER LST522

BLACK+DECKER LST522

A well-priced electric string trimmer with professional features including 2-speed control, trimmer to wheeled edger conversion, and Power Drive Transmission.

Key Features: 

  • 2-speed control
  • 2-in-1 design
  • Power Drive Transmission
  • Automatic Feed Spool
  • 20V battery

BLACK+DECKER LSTE523

BLACK+DECKER LSTE523

The BLACK+DECKER LSTE523 is a capable electric string trimmer that runs on a 20V MAX Lithium battery. This product features a Power Drive Transmission and 2-speed control. It also converts easily from trimmer to wheeled edger.

Key Features: 

  • 2-speed control for more power or extended runtime
  • Converts from trimmer to wheeled edger
  • EASYFEED allows you to advance your line with the push of a button
  • 20V MAX Lithium battery

BLACK+DECKER LSTE525

BLACK+DECKER LSTE525

This 20V easy feed string trimmer from BLACK+DECKER features Power Drive Transmission for increased torque and high-performance cutting.

Key Features: 

  • 12-inch cutting swath
  • Converts from trimmer to wheeled edger
  • Includes two 20V MAX Lithium batteries

DEWALT DCST970X1 FLEXVOLT

DEWALT DCST970X1 FLEXVOLT

The DEWALT DCST970X1 FLEXVOLT features a gear drive design that powers through tough overgrowth. This is one string trimmer that’s built for performance.

Key Features: 

  • 60V battery
  • High-efficiency brushless motor
  • Variable speed trigger
  • Lightweight and ergonomic

DEWALT DCST990H1

DEWALT DCST990H1

Tackle tough patches of overgrowth with this powerful 40V electric string trimmer from DEWALT. Reviewers say this unit is easy to use and delivers gas-powered performance.

Key Features: 

  • Patented gear drive design housed in a metal gear case for durability
  • 15-inch cutting swath
  • Variable trigger
  • 40V MAX 6.0Ah Lithium Ion battery

EGO Power+

EGO Power+

The EGO Power+ is a step up in power and convenience for cordless string trimmers, with its high-efficiency brushless motor and 56-Volt Lithium-Ion battery.

Key Features: 

  • High-efficiency brushless motor
  • 56-Volt Lithium-Ion battery
  • 15-inch cutting swath
  • Extended aluminum shaft

Greenworks 14-Inch Cordless String Trimmer

Greenworks 14-Inch Cordless String Trimmer

This cordless string trimmer from Greenworks is a versatile tool that is perfect for yards up to half an acre in size.

Key Features: 

  • Brushless motor
  • Attachment capable
  • Gas comparable performance
  • 14-inch cutting swath
  • Runs on a 40V battery

Greenworks 14-Inch Cordless String Trimmer With Battery

Greenworks 14-Inch Cordless String Trimmer With Battery

This string trimmer kit from Greenworks includes a gas comparable electric string trimmer with a brushless motor, a 40V battery, and a charger.

Key Features: 

  • Brushless motor
  • 14-inch cutting swath
  • Attachment capable
  • Includes a 40V battery and charger

Greenworks PRO 16-Inch Cordless String Trimmer

Greenworks PRO 16-Inch Cordless String Trimmer

This 16-inch 80V string trimmer is a powerful addition to the Greenworks range that will make short work of tough overgrowth.

Key Features: 

  • 16-inch cutting swath
  • Brushless motor for power, performance, and durability
  • Front mount design for balance and ergonomics
  • 80V battery

Makita XRU02Z

Makita XRU02Z

This 18V cordless string trimmer has a Makita-built motor that delivers 7,800 RPM for faster cutting speed and performance.

Key Features: 

  • Well-balanced, ergonomic design
  • Compact size is ideal for trimming and precise edging
  •  7,800 RPM motor
  • Telescoping shaft

Makita XRU09Z

Makita XRU09Z

The Makita XRU09Z is a cordless string trimmer with a Brushless Motor direct-drive system for high power and increased torque.

Key Features: 

  • Brushless Motor direct-drive system
  • 2-speed options
  • Runs on two 18V batteries for maximum power and runtime

Milwaukee Electric Tools 2725-21HD

Milwaukee Electric Tools 2725-21HD

A professional-grade electric string trimmer with a brushless motor and variable speed settings. This unit delivers power, balance, and maneuverability.

Key Features: 

  • 16-inch cutting swath
  • Variable speed trigger
  • Brushless motor
  • Up to 1 hour of run-time per charge

One+ Cordless Electric String Trimmer and Edger

One+ Cordless Electric String Trimmer and Edger

Designed for smaller yards, the One+ features a 10-inch cutting swath and a 2-in-1 design with a rotating shaft for easy edging.

Key Features: 

  • 10-inch cutting swath
  • 2-in-1 design with a rotating shaft
  • Great for small yards
  • Powered by an 18V battery

Worx WG154

Worx WG154

A battery-powered trimmer from Worx that converts easily to an edger in seconds. The 100% automatic single line feed on this model can be relied upon for cutting performance.

Key Features: 

  • 20V battery
  • Adjustable cutting width
  • Rotating head for easy edger conversion
  • Automatic feed

Worx WG184

Worx WG184

A 2-in-1 electric string trimmer with gas-like variable speed control for added runtime. This models features two 20V power modules that provide 40V total power.

Key Features: 

  • 2-in-1 design
  • Variable speed control
  • Two 20V power modules
  • Command feed Spool system

Corded Electric String Trimmers

Black & Decker GH900

Black & Decker GH900

The GH900 is a low-cost corded electric string trimmer with an automatic feed system that ensures continual work without bumping or having to stop.

Key Features: 

  • 6.5-Amp motor
  • High-torque transmission
  • 13-inch cutting swath
  • Lightweight design with adjustable height

Greenworks 18-Inch Corded String Trimmer

Greenworks 18-Inch Corded String Trimmer

The Greenworks 18-Inch Corded String Trimmer is a lightweight tool with a 10Amp motor and large cutting swath that can tackle even the toughest weeds.

Key Features: 

  • Lightweight and easy to use
  • 10Amp motor
  • 18-inch cutting swath

Gas String Trimmers

Husqvarna 952711952

Husqvarna 952711952

The Husqvarna 952711952 is a lightweight, multipurpose trimmer that’s perfect for homeowners. Reviewers say that it’s a reliable and hardworking machine.

Key Features: 

  • Auto return stop switch
  • Attachment capable
  • Starts quickly with minimum effort
  • Detachable shaft

Husqvarna 967055801

Husqvarna 967055801

If you’re looking for a high-end gas string trimmer, the Husqvarna 967055801 is an excellent choice. This unit has a powerful 4-stroke engine that runs on pure gas, allowing you to avoid the hassle of mixing oil and fuel.

Key Features: 

  • 4-stroke engine that runs on pure gas
  • Smart Start engine and starter
  • Air purge to remove air from the carburetor and fuel system
  • Delivers commercial power and performance

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