Best 21 Inch Lawn Mower: 5 Cordless and Gas Picks (2026)
Five 21 inch lawn mowers compared by deck build, cutting heights, drive type, battery runtime and stated warranty, plus who should buy and skip each model.
On this page
Top picks at a glance
As an Amazon Associate I earn from qualifying purchases.
- 1
Best OverallGreenworks 60V 21in9.6/10View on Amazon - 2
Best Heavy-Duty PushEGO POWER+ LM21149.6/10View on Amazon - 3
Best 80V Self-PropelledGreenworks 80V 21in9.6/10View on Amazon - 4
Best 3-in-1 KitWorx 40V WG7529.5/10View on Amazon - 5
Best Gas PushPowerSmart DV8621C9.4/10View on Amazon - 6
SENIX 21" 144cc Gas Push Lawn MowerView on Amazon - 7
SENIX 21-Inch Gas Push Lawn MowerView on Amazon - 8
AMERISUN 21′′Gas Lawn MowerView on Amazon - 9
BLACK+DECKER Electric Lawn MowerView on Amazon - 10
LawnMaster MEB1114K Electric Corded Lawn Mower 15-Inch 11AMPView on Amazon
Finding the best 21 inch lawn mower means balancing cutting width, power delivery, deck construction, and yard size. A 21 inch cutting path serves as the standard workhorse for suburban yards and provides clean trim passes around fence lines, garden beds, and tight obstacles on larger acreage. In this comparison, we evaluate five models spanning 40V, 56V, and 80V cordless battery systems alongside a 144cc gas push model, examining deck materials, drive systems, battery runtimes, and manufacturer warranty coverage as published on each listing.
AcreMowerLab earns a commission when you shop through links here. It never changes your price. Affiliate disclosure.
Quick picks
- Best Overall Greenworks 60V 21in: 60V brushless motor with two 4.0Ah batteries, self-propelled drive, 4-in-1 deck and up to 3/4 acre rating Check price on Amazon
- Best Heavy-Duty Push EGO POWER+ LM2114: Metal deck with 56V 6.0Ah battery, 6.0 ft-lbs torque, 55 minutes runtime and 5-year tool warranty Check price on Amazon
- Best 80V Self-Propelled Greenworks 80V 21in: 80V brushless motor with a durable steel deck, rapid charger, self-propelled drive and 4-year warranty Check price on Amazon
- Best 3-in-1 Kit Worx 40V WG752: 40V brushless motor with two 5.0Ah batteries, dual charger, AeroDeck design and complete 3-in-1 setup Check price on Amazon
- Best Gas Push PowerSmart DV8621C: 144cc 4-stroke OHV gas engine with auto-choke, steel deck and 59.4 lb weight Check price on Amazon
Our acreage picks
Greenworks 60V 21-Inch Self-Propelled Lawn Mower Kit (Two 4.0Ah Batteries)
60V self-propelled 21 inch mower with a brushless motor, two 4.0Ah batteries, rear wheel drive and 4-in-1 discharge capabilities.
Who it's for: property owners with yards up to 3/4 acre who want self-propelled drive and two batteries included.
Who should skip it: buyers who need a stated steel or metal deck spec, or published cutting height numbers.
Read the full review
The Greenworks 60V mower pairs a brushless motor with two included 4.0Ah lithium-ion batteries, delivering cordless power rated for up to 3/4 acre per charge. It features self-propelled rear-wheel drive with variable speed control, an ultra-bright LED headlight, and a 4-in-1 deck design that mulches, bags, discharges from the side, or handles turbo leaf pickup. The listing states the mower operates 3x quieter than gas mowers and backs the package with a 4-year limited tool and battery warranty. Deck material, machine weight, and cutting height settings are not stated in the listing.
Pros
- Two 60V 4.0Ah batteries included for up to 3/4 acre rated coverage
- Variable-speed self-propelled drive with rear-wheel traction
- 4-in-1 deck modes: mulching, bagging, side discharge and turbo leaf pickup
- 4-year limited tool and battery warranty stated on the listing
Cons
- Deck material is not stated in the listing bullets or specs
- No UL, ETL or CSA electrical certification is stated
- Cutting height range and number of positions are not stated
- Listing does not state product weight or machine dimensions
EGO POWER+ 21-Inch Cordless Lawn Mower LM2114 (56V 6.0Ah)
21 inch cordless push mower with a metal deck, 56V 6.0Ah battery, 6.0 ft-lbs torque, LED headlights and 5-year tool warranty.
Who it's for: homeowners who want high cutting torque, a metal deck, and long tool warranty coverage in a push mower.
Who should skip it: anyone who wants self-propelled drive to handle an 82 pound machine.
Read the full review
The EGO LM2114 cordless push mower features a metal deck and a high-efficiency brushless motor that delivers up to 6.0 ft-lbs of cutting torque. Powered by an included 56V 6.0Ah ARC Lithium battery, it is rated for up to 55 minutes of runtime on a single charge and recharges in 80 minutes with the included CH3200 charger. A single lever adjusts the 21 inch deck across seven cutting height positions from 1.25 to 4 inches. The unit weighs 82 pounds, measures 67.5 by 22.4 by 36.2 inches, and includes LED headlights for dawn or dusk visibility. EGO backs the mower with a 5-year tool warranty and a 3-year battery warranty.
Pros
- Stated metal deck construction and 6.0 ft-lbs cutting torque
- Included 56V 6.0Ah battery provides up to 55 minutes runtime
- 7 single-lever cutting height positions from 1.25 to 4 inches
- 5-year tool warranty and 3-year battery warranty stated on the listing
Cons
- Push mower operation mode with no self-propelled drive
- Heaviest mower listed here at 82 pounds
- No UL, ETL or CSA electrical certification is stated
- Listing does not state whether a grass collection bag is included
Greenworks 80V 21-Inch Self-Propelled Lawn Mower (4.0Ah Battery)
80V self-propelled 21 inch mower with a durable steel deck, brushless motor, 4.0Ah battery, rapid charger and variable speed drive.
Who it's for: buyers who want an 80V platform with a steel deck and self-propelled assistance on yards up to 1/2 acre.
Who should skip it: owners with more than half an acre who need a second battery or defined height positions.
Read the full review
The Greenworks 80V model combines an 80V brushless motor with a durable 21 inch steel deck and rear-wheel self-propelled drive with variable speed control. It includes one 4.0Ah battery rated to cut up to 1/2 acre per charge, along with a rapid charger and LED headlights. The listing notes it operates 3x quieter than gas mowers and carries a 4-year limited tool and battery warranty. The listing does not state the machine weight, deck cutting positions, or specific cutting height range.
Pros
- 80V brushless motor platform with an included rapid charger
- Listing explicitly states a durable steel cutting deck
- Rear-wheel self-propelled drive with variable speed control
- 4-year limited tool and battery warranty stated on the listing
Cons
- Rated for up to 1/2 acre, lower coverage than the 60V kit
- Single 4.0Ah battery included rather than a dual-battery kit
- Cutting height adjustment range and positions are not stated
- No UL, ETL or CSA electrical certification is stated
Worx 40V 21-Inch Cordless Push Lawn Mower WG752 (Two 5.0Ah Batteries)
40V cordless 21 inch push mower with a brushless motor, two 5.0Ah PowerShare Pro batteries, dual charger, AeroDeck and IntelliCut sensors.
Who it's for: homeowners with yards up to 1/2 acre who want full 3-in-1 versatility, sensor-adjusted speed, and two batteries included.
Who should skip it: buyers who require a stated warranty term, steel deck construction, or self-propelled drive.
Read the full review
The Worx WG752 push mower operates on two included 20V 5.0Ah PowerShare Pro batteries (40V total) and includes a 4.0A dual charger. It is rated for lawns up to 1/2 acre and features a Brushless Motor 2.0 that the maker claims provides 40% more power and 10% longer runtime than first-generation designs. It incorporates AeroDeck vented deck airflow to reduce clumping and IntelliCut sensors that automatically adjust cutting speed based on grass density. The package includes a grass collection bag, mulch plug, and rear side-discharge chute, with a 7-position single lever adjusting height from 1.5 to 4 inches. The handle folds for vertical storage, and an onboard charge indicator displays remaining power. The listing does not state a warranty term, deck material, or weight.
Pros
- Includes two 20V 5.0Ah PowerShare Pro batteries and a 4.0A dual charger
- Complete 3-in-1 setup includes collection bag, mulch plug and discharge chute
- IntelliCut sensors automatically adjust motor speed to grass density
- 7-position single-lever height adjustment from 1.5 to 4 inches
Cons
- No warranty term is stated on the listing
- Push mower operation mode with no self-propelled drive
- Deck material is not stated in the listing text or specs
- No UL, ETL or CSA electrical certification is stated
PowerSmart 21-Inch Gas Push Lawn Mower (144cc OHV Engine)
21 inch gas push mower with a 144cc 4-stroke OHV engine, all-steel deck, auto-choke, 6 height positions and foldable storage design.
Who it's for: buyers looking for a lightweight gas push mower with a steel deck and no battery charging routine.
Who should skip it: anyone who wants bagging capability, self-propelled drive, a concrete warranty duration, or zero exhaust emissions.
Read the full review
The PowerSmart DV8621C is a 21 inch gas push mower powered by a 144cc 4-stroke OHV engine with an auto-choke system. Its heavy-duty all-steel deck offers 2-in-1 mulching and side-discharge capabilities. The listing contains two internal contradictions. First, the bullets specify 10 inch rear wheels and 7 inch front wheels, whereas the specs table lists wheel size as 8 inches; following site guidelines, we trust the bullet details. Second, the bullets state cutting heights from 1.5 to 3.9 inches across six positions, while the specs table inverts this with a maximum height of 1.5 inches and minimum of 3.9 inches. Weight is 59.4 pounds, dimensions are 56 by 22 by 42 inches, and the listing does not state a concrete warranty duration.
Pros
- 144cc 4-stroke OHV gas engine with auto-choke for easy pull starts
- Heavy-duty all-steel cutting deck with mulching and side-discharge
- Lightest model in the group at 59.4 pounds
- Foldable storage design claimed to save up to 70% space
Cons
- Wheel size contradicts between listing bullets (10 in rear, 7 in front) and specs table (8 in)
- Cutting heights contradict between bullets (1.5 to 3.9 in) and specs table (max 1.5 in, min 3.9 in)
- No collection bag included, limited to 2-in-1 mulch and side discharge
- No EPA or CARB emissions certification is stated on the listing
Other machines to compare
SENIX 21" 144cc Gas Push Lawn MowerCheck price on Amazon
SENIX 21-Inch Gas Push Lawn MowerCheck price on Amazon
AMERISUN 21′′Gas Lawn MowerCheck price on Amazon
BLACK+DECKER Electric Lawn MowerCheck price on Amazon
LawnMaster MEB1114K Electric Corded Lawn Mower 15-Inch 11AMPCheck price on Amazon
Side-by-side specs
| Model | Acre Score | Power | Deck | Drive | Cutting Height | Runtime / Engine | Warranty |
|---|---|---|---|---|---|---|---|
| Greenworks 60V 21in | 9.6/10 | Battery (60V, two 4.0Ah) | Not stated | Self-propelled RWD | Not stated | Up to 3/4 acre per charge | 4-year limited tool and battery |
| EGO POWER+ LM2114 | 9.6/10 | Battery (56V, 6.0Ah) | Metal | Manual push | 1.25 to 4 in (7 positions) | Up to 55 minutes | 5-year tool, 3-year battery |
| Greenworks 80V 21in | 9.6/10 | Battery (80V, 4.0Ah) | Steel | Self-propelled RWD | Not stated | Up to 1/2 acre per charge | 4-year limited tool and battery |
| Worx WG752 40V | 9.5/10 | Battery (40V, two 5.0Ah) | Not stated | Manual push | 1.5 to 4 in (7 positions) | Up to 1/2 acre | Not stated |
| PowerSmart DV8621C | 9.4/10 | Gasoline | Alloy steel | Manual push | 1.5 to 3.9 in (6 positions) | 144cc 4-stroke OHV | Not stated |
Specifications are manufacturer rated as listed, collected 8 October 2026.
Acreage and terrain fit
Greenworks 60V 21in
EGO POWER+ LM2114
Greenworks 80V 21in
Worx 40V WG752
PowerSmart DV8621C
Buying guide: how to choose the best 21 inch lawn mower
Deck width and cutting path
A 21 inch deck width offers a practical middle ground for walk-behind mowing. The 21 inch cutting path covers open lawn efficiently while fitting through standard yard gates and maneuvering around landscape borders. For broader context on walk-behind equipment, explore our walk-behind and robotic mowers guide.
Cordless battery platforms vs gas engines
Battery cordless mowers eliminate fuel storage, oil changes, spark plug maintenance, and exhaust fumes. The battery models here operate on dedicated lithium platforms: 40V with two 5.0Ah packs (Worx), 56V with a 6.0Ah pack (EGO), 60V with two 4.0Ah packs (Greenworks 60V), and 80V with a 4.0Ah pack (Greenworks 80V). Both Greenworks models state they operate 3x quieter than gas mowers. The PowerSmart DV8621C relies on a 144cc 4-stroke OHV gasoline engine with an auto-choke for quick starting, providing continuous operation without waiting on battery recharges.
Push vs self-propelled drive systems
Drive configuration dictates the physical effort required during mowing. The Greenworks 60V and Greenworks 80V feature rear-wheel self-propelled drive with variable speed control, which eases mowing on slopes and across dense turf. In contrast, the EGO LM2114, PowerSmart DV8621C, and Worx WG752 are manual push mowers. At 59.4 pounds, the PowerSmart is relatively light to push, whereas the EGO weighs 82 pounds on its metal deck, making manual pushing more demanding on soft or uneven ground.
Deck materials and clipping management
Deck construction influences longevity and impact resistance. The EGO listing specifies a metal deck, while the PowerSmart and Greenworks 80V specify steel decks. Greenworks 60V and Worx do not state their deck materials in their listings. Clipping versatility also varies: the Greenworks 60V offers a 4-in-1 setup (mulch, bag, side discharge, and turbo leaf pickup), the Worx WG752 provides 3-in-1 capability (bag, mulch, side discharge), and the PowerSmart offers 2-in-1 operation (mulch and side discharge only, with no bagger).
Cutting height range and adjustments
Different grass varieties require specific cutting heights throughout the growing season. The EGO LM2114 provides a 7-position single lever adjusting from 1.25 to 4 inches. The Worx WG752 provides a 7-position lever adjusting from 1.5 to 4 inches. The PowerSmart lists six positions from 1.5 to 3.9 inches in its bullets. Greenworks does not state cutting height ranges for its 60V or 80V models on their listings. If you are calculating mowing schedules, our reference on how long does it take to mow an acre outlines baseline mowing rates across property sizes.
Safety practices for walk-behind mowers
Safe operation of walk-behind mowers requires clear ground and protective habits. Always clear the yard of stones, branches, toys, and wires before starting. Operators should wear eye protection, sturdy non-slip footwear, and hearing protection. Keep children and pets indoors while mowing. When mowing across slopes with a walk-behind mower, mow across the face rather than up and down to maintain secure footing and avoid slipping under the deck. For gas-powered mowers, always shut off the engine and let it cool completely before refueling outdoors. None of the five listings evaluated here states a UL, ETL, or CSA electrical certification, meaning owners must follow basic manufacturer operating precautions.
Walk the area first and clear stones, sticks, wire and toys. Wear eye and hearing protection, long pants and sturdy closed footwear, mow across slopes with a walk-behind (not up and down), and never pull a running mower toward you. Keep kids and pets well away. Refuel only with the engine off and cool. See CPSC lawn mower safety. Read our Safety Disclaimer.
The Acre Score explained
The Acre Score evaluates five core criteria: performance (motor voltage, engine displacement, cutting torque, and rated coverage), build quality (deck material, motor type, and structural components), value (included batteries, chargers, and deck accessories), safety (stated electrical or mechanical safety protections and certifications), and warranty (length of term and parts coverage). A factor the listing does not state scores zero.
| Product | Acre Score | Perf. /35 | Build /25 | Value /25 | Safety /10 | Warranty /5 |
|---|---|---|---|---|---|---|
| Greenworks 60V 21in | 9.6 | 33 | 21 | 22 | 0 | 3 |
| EGO POWER+ LM2114 | 9.6 | 32 | 22 | 20 | 0 | 3 |
| Greenworks 80V 21in | 9.6 | 30 | 22 | 20 | 0 | 3 |
| Worx 40V WG752 | 9.5 | 29 | 20 | 22 | 0 | 0 |
| PowerSmart DV8621C | 9.4 | 28 | 20 | 21 | 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
What does a 21 inch lawn mower mean?
A 21 inch lawn mower refers to the cutting width of the mower deck. The blade cuts a circular swath 21 inches across in a single pass. For residential lawns and trim passes on larger properties, a 21 inch cutting path balances cutting speed with maneuverability around garden beds, trees, and narrow gates.
What size blade does a 21 inch lawn mower take?
A 21 inch lawn mower uses a matching 21 inch blade designed to fit within the deck housing. Always consult the specific model number in your owner’s manual before ordering a replacement blade to verify exact length and center-hole mounting shape. To keep cutting edges sharp throughout the season, refer to our guide on the best mower blade sharpener.
Are 21 inch lawn mower blades universal?
No, 21 inch lawn mower blades are not universal. Different manufacturers use distinct center hole designs, including round holes, star shapes, and keyed patterns, along with varying deck clearances. A replacement blade must match the exact arbor pattern and clearance specified by the equipment maker.
What is the difference between push and self-propelled 21 inch mowers?
A push mower relies entirely on manual effort to move forward, which works well on flat ground and keeps machine weight lower. A self-propelled mower uses an internal transmission or motor to drive the rear wheels, reducing physical effort on slopes, uneven terrain, and thick grass.
More mowing guides
- Best High Voltage Electric Snow Shovel (2026): 5 Picks Compared
- 56V vs 80V Lawn Mower: Which One Should You Buy?
- Hover Mower vs Push Mower: Which One Should You Buy?
- Variable Speed vs Fixed Speed Self Propelled Mower: Which One Should You Buy?
- Best Electric Lawn Mower Under 300 (2026): 5 Picks Compared
- Best 21 Inch Lawn Mower Under $300 (2026)
- Segway Navimow X390 vs X450: Which One Should You Buy?
- Best Robot Lawn Mower Large Acreage (2026): 4 Wire-Free Picks
- 56v vs 40v Lawn Mower: Which One Should You Buy?
- Worx Landroid vs Mammotion Luba 3: Which One Should You Buy?
- Brushless vs Brushed Lawn Mower: Which One Should You Buy?
- Robotic Mower vs Self Propelled Mower: Which One Should You Buy?
- Hover Mower vs Robotic Mower: Which One Should You Buy?
- Best Reel Mower with Height Adjustment (2026): 4 Manual Picks
- Reel Mower vs Push Mower: Which One Should You Buy?
- Best Reel Mower for Kentucky Bluegrass (2026): 5 Picks
- Best Gas Lawn Mower Under $300 (2026): 5 Mowers Compared
- Best Self Propelled Mower Under $600 (2026): 5 Compared
- 40V vs 80V Lawn Mower: Which One Should You Buy?
- Best Push Mower for Large Yards (2026)
- Rear Bagger vs Side Discharge Mower: Which One Should You Buy?
- 20v vs 40v Lawn Mower: Which One Should You Buy?
- Robotic Mower vs Reel Mower: Which One Should You Buy?
- Best Electric Lawn Mowers under $400 (2026): 4 Picks
- Best Reel Mower for Putting Green (2026): 5 Picks
- Best Reel Mower for Zoysia Grass (2026): 5 Picks Compared
- Best Battery Lawn Mower for Stripes (2026): 4 Picks Compared
- Wire vs Wireless Robotic Mower: Which One Should You Buy?
- Side Discharge vs Mulching Mower: Which One Should You Buy?
- Corded vs Cordless Lawn Mower: Which One Should You Buy?
- Battery Lawn Mower vs Gas: Which One Should You Buy?
- Reel Mower vs Rotary: Which One Should You Buy?
- Best Grass Catcher Bag for Lawn Mower (2026): 5 Picks Compared
- Best Lawn Mower for Quarter Acre (2026): 5 Picks Compared
- Best LiDAR Robotic Mower (2026)
- Best Battery Lawn Mower for Large Yards (2026): 5 Compared
- Best Gas Lawn Mower Under $400 (2026): 4 Gas Push Picks
- Best Self Propelled Mower for 2 Acres (2026)
- Best Push Lawn Mower for Seniors (2026)
- PowerSmart 21-Inch Gas Lawn Mower Review (2026): B8721S2
- Senix 201cc Gas Lawn Mower Review (2026): HI6 Self-Propelled
- Black+decker 20-Inch Electric Lawn Mower Review: Pros, Cons & Who It’s For
- Best 21 Inch Lawn Mower Under $400 (2026): 5 Picks Compared
- Best Battery Self Propelled Mower for Large Yards (2026)
- Best Self Propelled Mower for 1 Acre (2026)
- Mammotion LUBA 3 AWD Review: Pros, Cons and Who It’s For
- Can Robotic Mowers Handle Hills?
- Are Robotic Mowers Safe Around Kids and Pets?
- RTK vs LiDAR Robotic Mower Navigation
- Do Robotic Mowers Work on Large Lawns?
- How to Store a Robotic Mower in Winter
- Walk Behind Mower Sizes: Deck Width and Yard Guide
- Best Reel Mower for Bermuda Grass (2026): 5 Top Picks Compared
- Best Small Battery Lawn Mower (2026): 5 Picks Compared
- Best Battery Electric Lawn Mower: 5 Picks Compared (2026)
- Best Gas Lawn Mower Self Propelled: 4 Picks Compared (2026)
- Best Manual Reel Mower (2026): 5 Top Picks Compared
- Best 21 Inch Commercial Lawn Mower: 5 Picks Compared (2026)
- Best Reel Mower (2026): 5 Picks Compared
- Push Lawn Mower Sizes: Width and Deck Guide
- Best Gas Lawn Mower (2026): 5 Top Picks Compared
- Best Battery Lawn Mower under $300 (2026): 5 Top Picks
- Best Gas Lawn Mower Under $500: 5 Picks Compared (2026)
- Cheap Small Lawn Mower: 5 Picks Compared (2026)
- Best Self Propelled Mower Under $500 (2026): 5 Picks Compared
- Best Robotic Mower Under 3000 (2026): 5 Wire-Free Picks
- Best Walk-Behind Brush Mower: 4 Picks for Rough Ground
- Best Robotic Mower for Large Lawns: 4 Wire-Free Picks
- Best Riding Mower for 1 Acre: 4 Picks by Deck Size
- How Long Does It Take to Mow an Acre? Times by Mower Type
- Best Mower Blade Sharpener: 4 Picks for Riders and Large Lawns
- California Gas Mower Ban Explained (CARB Small Engine Rule)
Narrow down your equipment choices by acreage, terrain, and power type to match your property needs.
