Best String Trimmer for Sloped Yards (2026): 5 Picks Compared
Five trimmers for sloped yards compared on cutting width, line, weight and warranty, from a 13 inch edger to a 60V attachment-capable trimmer.
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Top picks at a glance
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- 1
Best OverallGreenworks 40V 16 in9.5/10View on Amazon - 2
Best for EdgingGreenworks 40V 13 in9.4/10View on Amazon - 3
Best Attachment CapableDEWALT 60V Trimmer9.4/10View on Amazon - 4
Husqvarna 130L Gas String TrimmerView on Amazon - 5
Weed Eater Handle ExtensionView on Amazon - 6
Upgraded Weed Eater HandleView on Amazon - 7
Anleolife .105" Heavy Duty Dual-Core Trimmer LineView on Amazon - 8
NEO-TEC 3-in-1 Gas String Trimmer Powerful 26cc 2-Cycle GasView on Amazon
A slope turns trimming into balance work: the ground falls away underfoot, grass grows thick along fences and banks, and a heavy trimmer drags the arms down fast. The best string trimmer for sloped yards stays light in the hands, cuts cleanly at an angle, and keeps running until the bank is done. This list compares battery and corded trimmers on cutting width, line, weight and warranty.
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Quick picks
- Best Overall Greenworks 40V 16 in: 40V brushless trimmer with a 4.0 Ah battery and a 3 year warranty Check price on Amazon
- Best for Edging Greenworks 40V 13 in: 7-position head and 2-in-1 trimmer edger with 20 blades Check price on Amazon
- Best Attachment Capable DEWALT 60V Trimmer: 60V trimmer with universal attachment capability and adjustable swath Check price on Amazon
Our acreage picks
BLACK+DECKER Weed Wacker 14-Inch 2 in 1 String Trimmer Edger, 6.5-Amp Electric (BESTA510)
A 6.5-amp corded electric string trimmer with a 14 in cutting width, automatic feed spool and a rotating head that converts it to a wheeled edger.
Read the full review
The BESTA510 is BLACK+DECKER's corded answer to the trimmer-and-edger question: one 6.5-amp electric tool with a 14 in cutting width, an automatic feed spool that needs no bumping, and a head that rotates into a wheeled edger. We have not used it, so this review reports what the listing states. The headline features are consistent across the title, bullets and spec table, and the included AF-100 spool gives refills a clear part number.
What the listing states best: light weight at 6.3 pounds, adjustable handle and height positions, a cord retention system and concrete warranty terms of a 2 Year Limited Warranty plus a 30 Day Money Back Guarantee. What it leaves open: line diameter, cord length, shaft range, materials and noise. The maker's claim that the motor and POWERDRIVE transmission give maximum performance in tough weeds and overgrowth is reported as a claim, not a measured result.
Scored on stated specs, the BESTA510 reads as a straightforward corded trimmer-edger for suburban edges: the auto feed and 2-in-1 conversion are real conveniences, while the cord and the unstated line diameter set its limits. Buyers far from an outlet or facing heavy brush should look at battery or gas options instead.
Pros
- Automatic feed spool advances line without bumping the head.
- Rotates into a wheeled edger with an edge guide for straight borders.
- Light at 6.3 pounds with adjustable handle and height positions.
- Cord retention system keeps the extension cord connected during use.
Cons
- Corded design limits range to the reach of an extension cord; no cord length is stated.
- Line diameter is not stated, so cutting capability on thick growth cannot be judged.
- Only one speed is stated (8000 rpm); no variable-speed control is listed.
- No noise rating is stated.
Greenworks 40V 16 in Cordless String Trimmer
A 40V brushless cordless trimmer with a 16 inch cutting width, 0.095 inch dual line, 2 speed control and a 4.0 Ah battery.
Read the full review
The Greenworks 16 inch trimmer pairs a 40V brushless motor with a 16 inch cutting width, 0.095 inch dual line and 2 speed modes. It is attachment capable, and the listing states a 4.0 Ah battery, a 15.2 pound weight and a 3 Year manufacturer warranty.
Pros
- Brushless motor, per the listing, for more power and longer run-times
- Attachment capable with edger, hedge, polesaw, cultivator and blower attachments
- 4.0 Ah battery included with a 3 year manufacturer warranty
- 2 speed modes with a variable speed trigger for control
Cons
- 15.2 pounds is the heaviest weight stated in this list
- No slope rating is stated, so check the manual before buying for steep banks
- No telescoping shaft is stated
- No edging guide is stated
Greenworks 40V 13 in Cordless String Trimmer
A 40V cordless 2-in-1 trimmer and edger with a 13 inch cutting width, 7-position pivoting head, auto feed and a telescoping shaft.
Read the full review
The Greenworks 13 inch trimmer is a 40V cordless 2-in-1 trimmer and edger with a 7-position pivoting head, auto feed, a telescoping shaft and a brush cutter attachment. The listing states a 13 inch cutting width, 0.065 inch auto line and a 3-Yr Tool and Battery Warranty. Note two contradictions: the bullets give 7.8 pounds while the spec table gives 5.1 pounds, and the title gives a 2.0 Ah battery while the size field gives 4.0 Ah. Trust the title and bullets here.
Pros
- 7-position pivoting head for trimming, edging, fence lines and flower beds
- 2-in-1 trimmer and edger with a steel edging guide
- Brush cutter attachment with 20 reinforced plastic blades included
- Telescoping shaft adjusts from 40 to 52 inches
Cons
- Listing gives two weights: 7.8 pounds in the bullets and 5.1 pounds in the spec table
- Battery size is listed as 2.0 Ah in the title and 4.0 Ah in the size field
- No slope rating is stated
- 0.065 inch auto line is thinner than the 0.095 inch line on the 16 inch Greenworks
DEWALT DCST972B String Trimmer
A 60V cordless string trimmer with an adjustable 15 in./17 in. swath, 0.080 inch dual line, quick-load spool and universal attachment capability.
Read the full review
The DEWALT trimmer is a 60V cordless model with an adjustable 15 in./17 in. swath, 0.080 inch dual line, a quick-load spool and a variable trigger with hi/lo speed control. The listing states a 5800 rpm speed and a 9.6 pound weight, and names universal attachment capability. The included components name a bare tool, so no battery or charger is named.
Pros
- Universal attachment capability for additional tool pieces
- Adjustable 15 in./17 in. swath with 0.080 inch dual line, also works with 0.095 inch line
- Variable trigger with hi/lo speed control for power and runtime
- Quick-load spool for convenient re-spooling
Cons
- No warranty term is stated
- Bare tool listing, so check what battery and charger are included
- No slope rating is stated
- No attachment is included, only the capability
WORX 20V WG163 12 in Cordless String Trimmer and Edger
Cordless 20V trimmer and edger with a 12 inch cutting path, two 2.0Ah batteries, push-button command feed, and support wheels.
Who it's for: owners looking for an ultralight 5.5 lb trimmer that converts into a wheeled edger with two batteries in the box.
Who should skip it: anyone needing higher voltage or a stated multi-year tool warranty.
Read the full review
The WG163 listing describes a 20V 12 in trimmer and edger weighing 5.5 lb with a no-load speed of 7600 rpm. It includes two 20V 2.0Ah batteries, a charger, an adjustable spacer guard, and rubberized support wheels for edging. A push-button Command Feed spool advances the 0.065 in line on demand. The head tilts 90 degrees for sloped terrain and edging. The listing does not state a warranty term for the tool or batteries, though it notes free replacement spools.
Pros
- Lightest model here at 5.5 lb machine weight
- Comes with two 20V 2.0Ah batteries and a charger included
- Push-button Command Feed spool advances line instantly on demand
- Head tilts 90 degrees with rubberized guide wheels for walk-behind edging
Cons
- No warranty term is stated
- Narrower 12 in cutting diameter with thin 0.065 in line
- Lower 20V power compared to 40V and 56V options
- No runtime per battery charge is stated in the listing
Other machines to compare
Husqvarna 130L Gas String TrimmerCheck price on Amazon
Weed Eater Handle ExtensionCheck price on Amazon
Upgraded Weed Eater HandleCheck price on Amazon
Anleolife .105" Heavy Duty Dual-Core Trimmer LineCheck price on Amazon
NEO-TEC 3-in-1 Gas String Trimmer Powerful 26cc 2-Cycle GasCheck price on Amazon
Side-by-side specs
| Trimmer | Acre Score | Power | Cutting width | Line | Weight | Warranty |
|---|---|---|---|---|---|---|
| Greenworks 40V 16 in | 9.5/10 | 40V, 4.0 Ah battery | 16 inches | 0.095 in dual | 15.2 pounds | 3 Year |
| Greenworks 40V 13 in | 9.4/10 | 40V, 2.0 Ah battery | 13 inches | 0.065 in auto | 7.8 pounds | 3-Yr Tool and Battery |
| DEWALT 60V Trimmer | 9.4/10 | 60V bare tool | 15 in./17 in. | 0.080 in dual | 9.6 pounds | Not stated |
| WORX 20V WG163 | 9.4/10 | 20V | 12 inches | Not stated | Not stated | Not stated |
| BLACK+DECKER BESTA510 | 9.6/10 | Corded electric 6.5-Amp | 14 inches | Not stated | Not stated | Not stated |
Specifications are manufacturer rated as listed, collected 22 October 2026.
Acreage and terrain fit
Greenworks 40V 16 in
Greenworks 40V 13 in
DEWALT 60V Trimmer
WORX 20V WG163
BLACK+DECKER BESTA510
Buying guide: choosing the best string trimmer for sloped yards
Weight and balance on a slope
Weight matters more on a bank than on flat ground. The Greenworks 13 inch trimmer lists 7.8 pounds in its bullets, the DEWALT lists 9.6 pounds, and the Greenworks 16 inch lists 15.2 pounds. The 13 inch Greenworks adds a telescoping shaft that adjusts from 40 to 52 inches, which helps fit the handle on uneven ground. For more cordless options, see best cordless string trimmer.
Cutting width and line
Cutting widths here run 13 inches, 16 inches and an adjustable 15 in./17 in. on the DEWALT. Line differs too: the 13 inch Greenworks uses 0.065 inch auto line, which the listing says handles weeds to 1.5 inches, while the DEWALT uses 0.080 inch dual line and the 16 inch Greenworks uses 0.095 inch dual line. A narrower width fits tight spots along fences, while a wider swath clears open banks.
Battery and attachments
Three trimmers here run on batteries: the DEWALT at 60V, and the two Greenworks at 40V with 4.0 Ah and 2.0 Ah batteries. The DEWALT takes universal attachments and the 16 inch Greenworks takes its own attachment range. The BLACK+DECKER is corded electric at 6.5-Amp, so it needs an outlet within reach. Check the slope first: see how to measure the slope of your yard.
Edging on a bank
Edging matters where a bank meets a path or bed. The 13 inch Greenworks switches modes with a 7-position pivoting head and a steel edging guide, the 16 inch Greenworks lists trimming and edging around sidewalks, driveways, flower beds and fence lines, and the WORX and BLACK+DECKER titles name trimmer and edger use. Only the DEWALT does not state an edger use.
Wear eye and hearing protection, long pants and sturdy footwear, and keep bystanders well back while the line or blade spins. Clear stones and debris first, and stop the engine or remove the battery before clearing the head. Refuel only with the engine off and cool. See OSHA landscaping safety. Read our Safety Disclaimer.
Matching It to Your Property
- For steep banks, favor the lighter stated weights and the telescoping shaft.
- For fence lines and beds, the 7-position head pivots for trimming and edging.
- For open slopes, the wider 16 inch Greenworks and adjustable 15 in./17 in. DEWALT clear more per pass.
- For storage, the telescoping shaft adjusts from 40 to 52 inches.
- For banks with no outlet nearby, pick a battery trimmer.
The Acre Score explained
The Acre Score weighs performance, build quality, value, safety and warranty. No listing here states a safety feature, so every trimmer scores zero on safety. Warranty scores reflect stated terms only.
| Product | Acre Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| Greenworks 40V 16 in | 9.5 | 29 | 21 | 21 | 0 | 3 |
| Greenworks 40V 13 in | 9.4 | 27 | 19 | 20 | 0 | 3 |
| DEWALT 60V Trimmer | 9.4 | 30 | 21 | 19 | 0 | 0 |
Scores run from 9.2 to 9.8: each product’s point total is placed on that range, so more points always means a higher score.
FAQ: mowing large lots
Can a battery trimmer handle a sloped yard?
The battery trimmers here run at 60V and 40V, with 4.0 Ah and 2.0 Ah batteries stated. No listing here states a slope rating, so check the manual before buying for steep banks.
What cutting width suits a sloped yard?
Widths here are 13 inches, 16 inches and an adjustable 15 in./17 in.. A narrower width fits tight spots along fences, while a wider swath clears open banks.
Do I need eye and hearing protection?
Yes. Wear eye and hearing protection, clear debris before trimming, and keep children and pets out of the yard.
Which trimmers include a battery?
The 16 inch Greenworks includes a 4.0 Ah battery and the 13 inch Greenworks lists a 2.0 Ah battery in its title. The DEWALT listing names a bare tool, so check what battery and charger are included. The WORX and BLACK+DECKER listings state no battery details.
What warranty do these trimmers state?
The 16 inch Greenworks states a 3 Year manufacturer warranty and the 13 inch Greenworks states a 3-Yr Tool and Battery Warranty. The other listings state no warranty term.
More mowing guides
- Best Cordless String Trimmer: 5 Top Picks Compared (2026)
- Best Corded Electric String Trimmer (2026): 5 Picks Compared
- Best Battery String Trimmer for Large Yards (2026)
- Best Battery String Trimmer for Tall Grass (2026)
- 20v vs 40v String Trimmer: Which One Should You Buy?
- How to Measure the Slope of Your Yard
