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A good string trimmer for cutting grass makes quick work of edges, tight spots, and areas a mower cannot reach. When you pick the right trimmer you reduce cleanup time, get neater borders, and limit wrist and back strain during longer sessions. This guide covers seven carefully shortlisted string trimmers chosen for common lawn sizes and typical yard tasks. We'll evaluate each trimmer on how it handles grass cutting, how easy it is to use and maintain, and what kind of reach and runtime you can expect. Read on to find an option that fits your yard layout and physical comfort needs before you look at the product details.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | BLACK+DECKER 20V MAX 12" Cordless String Trimmer and Edger (LST300) |  |
| Best Quality Built to a higher standard if you want something more solid | DEWALT 20V MAX XR 14-Inch Brushless String Trimmer (Tool Only, DCST922B) |  |
| Best Value The sweet spot between price and what you get | DCA 20V 14" Cordless Brushless String Trimmer with 4.0Ah Battery |  |
| Best Budget The cheapest option that still gets the job done reliably | HortiHub 21V Cordless String Trimmer with 2.0Ah Battery (12-inch) |  |
| Highest Rated A top-rated pick with lots of positive feedback | Glenvera 20V 12" 2-in-1 Cordless String Trimmer and Lawn Edger (YD2505) |  |
| Most Popular A crowd favorite that many people choose with confidence | BLACK+DECKER 6.5-Amp 14-inch AFS Electric String Trimmer/Edger (BESTA510) |  |
| Best Seller A high-volume bestseller chosen again and again | WORX 20V 12" 2-in-1 Cordless String Trimmer & Lawn Edger (WG163) |  |
BLACK+DECKER 20V MAX 12" Cordless String Trimmer and Edger (LST300)
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Speed | 6200 rpm |
| Number of Batteries | 1 Lithium Ion (included) |
The BLACK+DECKER LST300 is a compact, battery-powered 2-in-1 string trimmer and wheeled edger designed for routine yard maintenance and edging tasks. It uses a 20V Powerconnect lithium-ion battery (included) and a PowerDrive transmission to deliver higher torque at the cutting head, while a 12-inch cutting swath makes it easy to navigate around garden beds and sidewalks. The automatic feed spool keeps line length correct without bumping, and adjustable height plus a textured handle improves comfort for longer sessions. Because it is cordless and lightweight it starts quietly and avoids the fuss of gas tools, and the included wall-mountable charger simplifies storage. Expect solid performance on standard grass and moderate overgrowth; however the 12-inch head and single included 2.0 Ah battery limit runtime and may require slower passes or a second battery for large yards or very thick weeds. For homeowners focused on convenience and everyday trimming, this model balances ease of use with enough cutting power for typical light-to-moderate jobs.
Best for: Homeowners who want an easy-to-use, low-noise cordless trimmer for regular lawn touch-ups and clean edging around sidewalks and beds and who value simplicity and proven performance.
Less Ideal for: Those with several acres, dense brush, or frequent heavy clearing needs should look at higher-voltage cordless or gas-powered trimmers instead.
- Converts quickly between string trimmer and wheeled edger for two common tasks
- Automatic Feed Spool (AFS) keeps line fed without bumping
- PowerDrive transmission increases torque for stronger cutting at the head
- Lightweight with adjustable handle and height for comfortable use
- Includes 20V lithium-ion battery and charger so it is ready to use out of the box
- 12-inch cutting swath and single 2.0 Ah battery limit runtime and may be slow on large yards or very thick weeds
- Not suited for heavy-duty brush cutting compared with more powerful gas or higher-voltage cordless models
Verdict: A lightweight, easy-to-use 2-in-1 cordless trimmer that is ideal for everyday light-to-moderate lawn trimming and edging tasks.
DEWALT 20V MAX XR 14-Inch Brushless String Trimmer (Tool Only, DCST922B)
| Power Source | Battery Powered |
|---|---|
| Cutting width | 14 inches |
| Speed | 6000 rpm |
The DEWALT 20V MAX XR 14-inch string trimmer is a performance-focused cordless trimmer built around a brushless motor, a 14-inch cutting swath, and a variable-speed trigger with Hi/Lo speed control. It is designed for homeowners who need a reliable tool for edging, trimming around beds, and cutting through thicker grass and light brush. The folding hinge reduces overall length by about 40 percent for easier storage and transport, and the QuickLoad spool speeds line replacement so you spend less time reloading and more time trimming. In use the brushless motor provides consistent power across the speed range and the Hi/Lo setting helps balance runtime versus cutting force. Important limitations are that this listing is tool-only so you must already own or separately buy a compatible 20V battery and charger, and runtime will depend on the battery you pair with it. The trimmer is solidly built for regular yard work and is best when paired with high-capacity batteries for longer sessions.
Best for: Homeowners who prioritize cutting power and durability for regular lawn maintenance and want a compact, transportable cordless trimmer that can handle thicker grass and edging tasks.
Less Ideal for: Buyers who need an all-in-one kit with batteries included or those who only need an occasional, light-duty trimmer and prefer a cheaper, simpler model.
- Brushless motor delivers strong, consistent power and improved efficiency
- Variable-speed trigger and Hi/Lo switch let you tune power versus runtime
- Folding hinge reduces length for easier storage and transport
- QuickLoad spool simplifies and speeds line replacement
- Tool-only package requires purchasing a compatible 20V battery and charger separately
- Runtime depends entirely on the battery chosen and is not specified with the tool
Verdict: Choose this DEWALT 20V brushless trimmer if you want a compact, performance-oriented cordless trimmer that balances power and portability for regular homeowner use.
DCA 20V 14" Cordless Brushless String Trimmer with 4.0Ah Battery
| Power Source | Battery Powered |
|---|---|
| Cutting width | 14 inches |
| Speed | 6200 rpm |
| Number of Batteries | 1 Nonstandard Battery (included) |
This DCA 20V cordless string trimmer is built for everyday lawn care, combining a brushless motor, adjustable cutting width and an included 4.0Ah battery to handle both light edging and thicker weeds. You switch between two speeds—around 4600 rpm for delicate trimming and 6200 rpm for heavy growth—so it works for precision near flower beds and for open lawn swaths. The head uses a bump-feed dual-line system for quick line advancement, and the 12"–14" adjustable cutting width lets you tighten the swath when working near obstacles. The brushless motor promises longer life and steadier power, while the high-capacity battery claims up to 60 minutes at low speed, which is useful for medium-sized yards. Design choices favor usability: a lightweight aluminum shaft and an ergonomic layout reduce fatigue during longer sessions. Limitations to note are that the stated runtimes depend on speed and load, and heavier grass will shorten battery life; accessories and replacement lines are not described in detail so plan to source common replacement spools if you trim frequently.
Best for: Buyers who want a practical, no-nonsense cordless trimmer that balances runtime, power, and ease of use for routine lawn maintenance and edging.
Less Ideal for: If you need a commercial-grade tool for daily heavy-duty clearing or will rely on very long runtimes without swapping batteries, a higher-voltage professional unit is a better fit.
- Brushless motor for more consistent power and longer motor life
- Two-speed control for light trimming or higher-power cutting
- Adjustable 12"–14" cutting width adapts to edging and open-area trimming
- Included 4.0Ah battery supports extended run times on a single charge
- Bump-feed dual-line head for fast line advancement and simpler reloads
- Runtime varies substantially between speeds and heavy vegetation will reduce single-charge coverage
- No detailed list of included spare line or accessory attachments
Verdict: A dependable, user-friendly cordless trimmer that gives homeowners flexible two-speed performance and long battery life for routine grass cutting and edging.
HortiHub 21V Cordless String Trimmer with 2.0Ah Battery (12-inch)
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Speed | 9000 rpm |
| Number of Batteries | 1 Lithium Ion (included) |
| Battery Average Life | 15 minutes |
This HortiHub cordless string trimmer is built for basic lawn upkeep and small yards. It uses a 21V motor that spins the head up to 9000 RPM and a 12-inch cutting swath to speed through edges and routine trimming. The included 2.0Ah battery and charger provide roughly 15 minutes of runtime, enough for spot jobs or finishing after a mower. Practical touches include an automatic line-feed system to reduce stops for manual bumping, tool-free assembly, an adjustable handle for comfort, and included safety goggles and gloves. Because it is lightweight and low-noise it is easy to maneuver and suitable for beginners or users who need a less tiring, neighbor-friendly tool. The main limitation is the short single-battery runtime and modest power level, so it is not meant for extended sessions, dense woody brush, or heavy-duty clearing. For routine edging, trimming around beds, and maintaining small lawns, it delivers simple, affordable performance with minimal setup.
Best for: Buyers who want an inexpensive, easy-to-use cordless trimmer for routine yard maintenance, edging, and quick touch-ups around a small to medium lawn.
Less Ideal for: Owners with large properties, heavy brush, or frequent long trimming sessions should look at higher-voltage trimmers with larger or multiple batteries.
- 12-inch cutting width covers more ground per pass for faster edging and trimming
- Automatic line-feed system reduces interruptions to reload line during use
- Lightweight and adjustable handle improves maneuverability and reduces fatigue
- Includes battery, charger, safety goggles, gloves, and extra spools for out-of-the-box use
- Single 2.0Ah battery yields only about 15 minutes of continuous runtime
- Not designed for woody stems, thick brush, or heavy-duty clearing
Verdict: A budget-friendly, lightweight cordless trimmer that makes quick edging and small-yard trimming easy and low-noise.
Glenvera 20V 12" 2-in-1 Cordless String Trimmer and Lawn Edger (YD2505)
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Speed | 9000 rpm |
| Number of Batteries | 2 Nonstandard Battery batteries required. (included) |
The Glenvera YD2505 is a battery-powered 2-in-1 string trimmer that converts quickly between trimming and edging to handle small-yard maintenance without cords. It uses a high-speed motor rated to 9,000 RPM and a 12-inch cutting width to clear grass and weeds along borders and around obstacles. The kit includes two 20V 4.0Ah batteries and a charger, which the manufacturer says provide up to 60 minutes of runtime and enough capacity to cover about a quarter acre on a charge. An automatic line feed keeps the cutting line at the right length so you spend less time stopping to bump or replace line. The head adjusts in four positions and the handle rotates 180 degrees for better reach in tight spots. For reliability-focused buyers this model stands out for its included spare battery and simple auto-feed system, though its motor and cutting width are sized for small yards rather than heavy-duty commercial use. Expect a lightweight, easy-to-handle tool that makes regular yard upkeep faster but not suited for very thick brush or very large properties.
Best for: Homeowners with small to medium lawns who prioritize a dependable, easy-to-use cordless trimmer that minimizes interruptions during routine maintenance and includes a spare battery for longer sessions.
Less Ideal for: Those with large properties, dense woody brush, or commercial trimming needs should choose a more powerful, larger-capacity model instead.
- Includes two 20V 4.0Ah batteries and charger for extended runtime
- 2-in-1 design switches between trimmer and edger for border work
- Automatic line feed reduces interruptions for consistent cutting
- Adjustable head and 180° rotating handle improve reach and comfort
- 12-inch cutting width and motor power are aimed at small yards, not heavy brush
- Uses nonstandard batteries which may limit cross-compatibility with other tools
Verdict: A practical, reliability-minded cordless trimmer for small yards that delivers balanced runtime and hassle-free line feeding with the convenience of a spare battery.
BLACK+DECKER 6.5-Amp 14-inch AFS Electric String Trimmer/Edger (BESTA510)
| Power Source | Corded Electric |
|---|---|
| Cutting width | 14 inches |
| Speed | 8000 rpm |
| Included Components | AF-100 Spool, Auxiliary Handle, Guard |
| Manufacturer Warranty Description | 2 Year Limited Warranty, 30 Day Money Back Guarantee |
This BLACK+DECKER model is a straightforward corded electric trimmer that converts to a wheeled edger, letting you trim tight spots and define borders without buying two tools. The 6.5‑amp motor with POWERDRIVE transmission supplies steady torque for grass and light overgrowth, while the 14‑inch cutting swath gets jobs done quickly. AFS automatic feed spool removes the need to bump the head and keeps line feeding consistent, and the integrated cord retention reduces accidental unplugging during use. The tool is relatively lightweight and includes an auxiliary handle and adjustable positions for more comfortable handling. Because it is corded, runtime is effectively unlimited but you are limited by reach from an outlet and need to manage an extension cord for larger yards. The edging wheel converts easily but is basic compared with dedicated gas or battery pro edgers. For homeowners on a budget who need reliable, low-maintenance edging and trimming around sidewalks, driveways, and flower beds, this is a practical choice.
Best for: Homeowners who want an affordable, no-frills electric trimmer that also converts to an edger for routine lawn edge and small-yard trimming tasks.
Less Ideal for: People with large properties who need cordless mobility or professionals who require heavy-duty gas-powered edging and cutting performance.
- 2‑in‑1 trimmer and wheeled edger covers both tasks without extra tools
- AFS automatic feed spool eliminates bump feeding for uninterrupted work
- 6.5‑amp motor with POWERDRIVE transmission delivers steady torque for common yard weeds and grass
- Integrated cord retention prevents accidental unplugging during use
- Lightweight with adjustable handle for easier control and comfort
- Corded design limits reach and requires managing an extension cord
Verdict: A budget-friendly corded trimmer that doubles as a simple wheeled edger and reliably handles routine edging and trimming around the yard.
WORX 20V 12" 2-in-1 Cordless String Trimmer & Lawn Edger (WG163)
| Power Source | Battery Powered |
|---|---|
| Cutting width | 12 inches |
| Speed | 7600 rpm |
| Number of Batteries | 2 Lithium Ion batteries required. (included) |
The WORX WG163 is a compact 2-in-1 cordless string trimmer that converts quickly to a wheel-guided edger for straight, clean borders. It uses a Command Feed spool so you only advance line when you want to, and the head tilts 90 degrees to reach slopes and tight areas. Rubberized support wheels help guide edging for consistent results and the adjustable spacer guard protects flowers and landscaping during trimming. Included with the tool are two 20V PowerShare batteries and a charger, which makes it ready to work on small to medium yards and lets you swap batteries across other WORX 20V tools. At about 5.5 pounds it is easy to maneuver and less fatiguing for longer sessions. Limitations to consider are the modest 12-inch cutting swath and single-speed motor, so it is not the fastest option for very large properties or heavy brush. The Command Feed system reduces bump-feed interruptions but you will still need to keep replacement line on hand for sustained use.
Best for: Buyers who want a lightweight, easy-to-use 2-in-1 trimmer and edger for small to medium lawns and value included batteries and proven features backed by many user reviews.
Less Ideal for: Not well suited for homeowners with large acreage, dense brush, or who need variable-speed power for heavy-duty cutting tasks.
- Converts quickly between trimmer and wheel-guided edger for two tools in one
- Command Feed spool provides on-demand line advance without bumping
- Two 20V PowerShare batteries included so you can work longer and use batteries across other WORX tools
- 90° tilting head and adjustable spacer guard improve access and protect plants
- Lightweight design eases fatigue during extended use
- 12-inch cutting width and single-speed motor limit efficiency on large yards or thick vegetation
Verdict: Choose the WORX WG163 if you want a lightweight, battery-ready 2-in-1 trimmer and edger that is easy to use and works well on small to medium lawns.
Choosing the Right String Trimmer for Cutting Grass: Key Factors to Consider
Power Source and Runtime
The trimmer's power source determines how you plan work and maintain the tool. Corded electric units offer constant power but limit mobility and require an extension cord for larger yards. Cordless battery trimmers remove the cord constraint and are quieter, but battery capacity and recharge time limit continuous runtime and may require a spare battery for larger properties.
Gas engines deliver the longest runtime and better torque for thick or damp grass, but they are heavier, require fuel mixing or regular fueling, and need more maintenance. Consider how often you trim, the size of the area, and whether quiet operation or extended runtime is more important for your situation.
Cutting Width and Head Type
Cutting width affects how quickly you can cover open lawn areas. Wider arcs cut more per pass but may be harder to control near obstacles and edges. Narrower heads give more precision for tight spaces and along flower beds. Many trimmers offer adjustable heads or different spool sizes to balance speed and control.
Head type also matters: bump-feed heads let you release more line quickly but can jam or wear faster in heavy-duty use. Automatic-feed heads reduce interruptions but can eat line faster. Choose a head style that matches whether you prioritize quick coverage or low-maintenance trimming.
Line Type and Durability
The string itself is a consumable and varies in thickness, shape, and material. Thicker or twisted lines hold up better against coarse grasses and light brush, while thinner line cuts more cleanly through fine turf and uses less power. Abrasion-resistant or reinforced lines last longer around hard edges, pavers, and patios.
Availability of common spool sizes and ease of reloading also influence ongoing convenience. If your yard has many stone or metal edges expect more frequent line replacement and prioritize a trimmer with simple, fast spool changes.
Weight, Balance, and Comfort
Trim sessions can last from a few minutes to over an hour depending on yard size, so weight and balance affect endurance and wrist strain. A lighter unit reduces fatigue but may transmit more vibration to the hands. Balance along the shaft and an adjustable handle let you position the trimmer for neutral handling which lowers shoulder and back stress.
Look for padded grips, anti-vibration features, and shoulder strap compatibility if you expect extended use. Shaft length and the ability to adjust handle placement matter for taller or shorter users to avoid awkward posture.
Maintenance and Serviceability
Regular upkeep keeps a trimmer cutting reliably. Battery units require attention to battery health, proper charging, and storage to preserve cycle life. Gas trimmers need spark plug, air filter, and carburetor maintenance and correct fuel handling to avoid starting issues.
Ease of accessing the trimmer head, replacing line, and getting replacement parts or common service items extends the tool's useful life. Choose a model with straightforward maintenance steps and clear component availability to minimize downtime.
Safety Features and Controls
Trimmers work close to feet, flower beds, and bystanders; safety-oriented design reduces the chance of injury and property damage. Features to evaluate include a solid debris shield, an effective safety stop or throttle lock, and handle spacing that prevents accidental contact with the cutting head.
Intuitive controls that you can operate with gloves and that return to neutral reliably are important. Also consider whether the unit allows quick shutoff and how easy it is to visually inspect the cutting area while operating.
Best Trimmers by Yard Size and Task
Match trimmer capability to yard scale and the tasks you tackle most. Small urban yards usually benefit from lightweight corded or compact battery units that deliver clean edges without the weight and maintenance of gas. Medium suburban lawns often require cordless models with larger batteries or higher-voltage platforms that balance runtime and portability. Large properties or yards with thick, wet grass may justify a gas unit for sustained power and torque.
- Small yards: prioritize maneuverability and quiet operation.
- Medium yards: balance battery capacity with cutting width.
- Large yards or rough grass: prioritize torque and endurance.
Mowing Complementarity and Workflow
Think of the trimmer as part of your lawn workflow rather than a standalone tool. Trim after mowing to catch missed clippings and to tidy borders. If you use a battery mower, sharing battery platforms between mower and trimmer streamlines charging and spare-battery planning. For gas tool users, matching fuel and routine maintenance across tools simplifies servicing.
- Trim after mowing for best results and less tearing.
- Coordinate batteries or fuel schedules across yard tools.
Edge Techniques and Trimming Tips
Hold the trimmer at a slight angle when working edges so the line slices the grass cleanly instead of yanking. For a defined border, run the head parallel to the edge and take multiple shallow passes rather than a single deep cut. When trimming near flower beds or shrubs, lower line speed and use small, controlled movements to avoid accidental damage.
- Angle the head slightly to get a clean cut on edges.
- Use multiple shallow passes for precision along borders.
- Slow, controlled strokes near plants prevent accidental stripping.
Managing Noise, Emissions, and Local Rules
Noise and emissions can influence the best power choice. Corded and battery models are quieter and emit no on-site fumes, making them better choices in neighborhoods with noise restrictions or for early-morning work. Gas units are louder and produce exhaust, so check local ordinances and consider neighbor impact when scheduling trimming.
- Prefer battery for quiet, low-emission operation.
- Plan gas-powered work for midday when restrictions or neighbor disturbance are less likely.
Storage and Off-Season Care
Proper storage extends trimmer life. Keep battery packs at about half charge in a cool, dry place during winter and follow maker guidance on long-term storage. For gas units, drain fuel or add a stabilizer and run the engine briefly to clear carburetor passages before storage. Clean the cutting head and remove grass buildup to prevent corrosion and pest habitat.
- Store batteries partially charged in a cool place.
- Drain or stabilize fuel before long storage periods.
- Clean cutting head and shield to prevent buildup.
How We Chose the Best String Trimmer for Cutting Grass
We focused on real-world cutting performance, durability in lawn conditions, and ergonomic usability to produce a practical shortlist of string trimmers for cutting grass. Primary evaluation criteria included power delivery and cut width so the trimmer can handle common turf thicknesses and lengths. Runtime and recharge or fuel efficiency were considered for cordless and gas options so a single charge or tank covers typical yard sizes. Ease of handling included weight, balance, shaft length, and vibration levels to reduce fatigue while trimming edges and under shrubs. Line feed and head durability were assessed because reliable line management reduces interruptions during a job. Safety features and maintenance accessibility were also part of the filters. We excluded niche specialty units designed only for brush clearing or heavy woody growth and handheld garden tools not intended for lawn edges. We also filtered out models with consistently poor user-reported durability or unclear maintenance paths. The final picks emphasize everyday lawn trimming performance, predictable maintenance, and ergonomics for moderate to large yards.
FAQ
What line thickness should I use for typical lawn grass?
Most lawns trim well with a medium-thickness line in the 0.065 to 0.080 inch range. Thicker lines are better for coarse or overgrown grass, while thinner lines are more efficient for fine turf and use less power.
Can I use the same battery for my mower and trimmer?
Often yes if both tools share the same battery platform. This simplifies charging and spare planning, but check voltage and amp-hour compatibility because runtime varies by tool and task.
Is a gas trimmer necessary for small yards?
Not usually. Small yards are often well served by corded or battery trimmers that are lighter, quieter, and easier to maintain. Gas is more useful for long runtimes or heavy, wet grass.
How often will I need to replace the cutting line?
Frequency depends on yard conditions and edging habits. If you trim near hard surfaces or stone frequently, expect more frequent replacements. In open lawn areas the line may last significantly longer between reloads.
How can I reduce vibration and fatigue during long trimming sessions?
Choose a trimmer with good balance and anti-vibration features, use a shoulder strap or harness, and adjust handle position to keep the shaft level with comfortable arm posture. Taking short breaks also reduces strain.
Are replacement spools and line easy to find?
Most common spool sizes and line diameters are widely available, but it is worth confirming spool compatibility and whether the head supports easy reloading to save time during routine maintenance.
Final Verdict
Selecting the right string trimmer for cutting grass is a tradeoff between mobility, runtime, and cutting needs. Prioritize the power source that fits your yard size and noise preferences, then match cutting width and line durability to how much open lawn versus edging you do. Factor in weight and balance to reduce fatigue and favor models with straightforward maintenance and available replacement consumables. With those priorities clear you can pick a trimmer that minimizes interruptions, lasts through seasons of use, and produces consistently tidy edges. Focus on the combination of runtime or fuel endurance and ergonomic comfort to decide which option will serve your lawn best.
