Choosing the best 21 lawn mower is essential for maintaining a healthy and attractive yard. There are various types, including gas-powered and electric models, and the 21 lawn mower deliver powerful performance and ease of use.
A properly fitted 21 lawn mower in 2026 enhances your lawn care routine with features like self-propulsion and mulching capabilities. Designed to match different lawn sizes and terrains, top-rated covers offer durability and efficiency.
This guide highlights the best 21 lawn mower to help you choose the right option for your specific landscaping needs and preferences.
10 best 21 lawn mower
“Before you buy, carefully consider your lawn's size and your personal preferences for power source. If you need a powerful and reliable option for larger yards, a gas-powered 21 lawn mower is often your best bet. If quiet operation and reduced maintenance are your top concerns, invest in a battery-powered model with a long-lasting battery and efficient charging system. Always double-check the product listing for your specific engine size or battery voltage and confirm compatibility with any desired accessories to avoid compatibility issues.”
best 21 lawn mower Comparison Table
| Product | Best For | Key Strength | Who It’s For | |
|---|---|---|---|---|
| PowerSmart 21 lawn mower | Best For: Self-Propelled Ease | Key Strength: Versatile 3-in-1 Cutting System | Who It's For: Residential Users | Check Price |
| BILT HARD 21 lawn mower | Best For: Thick Grass Handling | Key Strength: 8-Position Height Adjustment | Who It's For: Demanding Homeowners | Check Price |
| PowerSmart 21 lawn mower | Best For: Easy Operation | Key Strength: Reliable OHV Engine | Who It's For: All Experience Levels | Check Price |
| Greenworks 21 lawn mower | Best For: Eco-Friendly Operation | Key Strength: 80V Battery Ecosystem | Who It's For: Green-Conscious Users | Check Price |
| Senix 21 lawn mower | Best For: Simple Maintenance | Key Strength: No Oil/Gas Mixing | Who It's For: Traditional Mower Users | Check Price |
| Grasscool 21 lawn mower | Best For: Enhanced Mulching | Key Strength: Direct Troy-Bilt Replacement | Who It's For: Specific Model Owners | Check Price |
| EGO Power+ 21 lawn mower | Best For: Intuitive Speed Control | Key Strength: Touch Drive™ Self-Propel | Who It's For: Tech-Savvy Users | Check Price |
| WORX 21 lawn mower | Best For: Hassle-Free Maintenance | Key Strength: Gas-Powered Performance | Who It's For: Eco-Conscious Homeowners | Check Price |
| WORX 21 lawn mower | Best For: Compact Storage | Key Strength: Quick-Fold Handle | Who It's For: Space-Limited Owners | Check Price |
| Greenworks 21 lawn mower | Best For: Extended Runtime | Key Strength: Dual Battery System | Who It's For: Medium Yard Owners | Check Price |
1. PowerSmart 21 lawn mower – Affordable Pick
For homeowners looking to tackle their lawns without breaking a sweat, the PowerSmart 21" Self-Propelled Lawn Mower presents a compelling option. This mower is designed to make yard work less of a chore, offering a blend of power and user-friendly features that cater to a variety of lawn sizes and conditions. Whether you're dealing with thick grass or uneven terrain, this machine aims to provide a reliable and efficient cutting experience.
What truly sets this PowerSmart mower apart is its combination of a reputable Briggs & Stratton engine and a self-propelled drive system, all at a price point that makes it accessible to many. It simplifies the mowing process, allowing you to focus on achieving a clean cut rather than struggling with pushing a heavy machine. Its versatile 3-in-1 functionality further enhances its value, offering mulching, bagging, and side-discharge options to suit your lawn care preferences.
Key Specifications
| Feature | Details |
|---|---|
| Engine | Briggs & Stratton 140cc |
| Cutting Width | 21 inches |
| Drive System | Self-propelled |
| Deck Material | Steel |
| Height Adjustments | 6 positions (1.2" – 3.5") |
| Cutting Options | Mulch, Bag, Side Discharge |
| Wheel Size | 8" front, 11" rear |
Reasons to Buy
- Powerful and reliable Briggs & Stratton engine for consistent performance.
- Self-propelled drive system significantly reduces user effort.
- Versatile 3-in-1 cutting options (mulch, bag, side discharge) adapt to different needs.
- Durable steel deck construction ensures longevity.
- User-friendly design with easy starting and intuitive controls.
Reasons to Avoid
- May lack advanced features found on higher-end models.
- The 21-inch cutting width might be slightly small for very large lawns.
2. BILT HARD 21 lawn mower – Best Value
If you're looking for a reliable and powerful gas lawn mower that won't break the bank, the BILT HARD 21 Inch Self-Propelled Gas Lawn Mower is a fantastic option to consider for your 2026 lawn care needs. This machine is designed for homeowners who want a no-nonsense mower that gets the job done efficiently, whether you have a small suburban yard or a larger property. Its self-propelled feature takes the strain out of mowing, making it accessible for a wide range of users.
What truly sets this BILT HARD mower apart is its combination of robust performance and user-friendly design at a competitive price point. The 201cc engine provides ample power for tackling thick grass, while the 3-in-1 functionality (bagging, mulching, and side discharge) offers versatility for different lawn conditions and preferences. It’s a straightforward, effective tool for maintaining a neat and tidy lawn with less effort.
Key Specifications
| Feature | Details |
|---|---|
| Engine | 201cc 4-Cycle Gas Engine |
| Cutting Width | 21 Inches |
| Drive System | Self-Propelled |
| Cutting Functions | Bagging, Mulching, Side Discharge |
| Cutting Height Adjustment | 8 Positions (Adjustable) |
| Starting System | Easy Start |
| Deck Material | Steel |
Reasons to Buy
- Powerful 201cc engine handles thick grass with ease.
- Self-propelled drive significantly reduces user fatigue.
- 3-in-1 cutting system offers flexibility for bagging, mulching, or side discharge.
- 8-position height adjustment allows for precise lawn grooming.
- Easy Start system simplifies engine ignition.
- Excellent value for the features and performance offered.
Reasons to Avoid
- May be heavier than some electric or smaller gas mowers.
- Assembly may require some basic mechanical aptitude.
3. PowerSmart 21 lawn mower – Premium Choice
For homeowners seeking a reliable and straightforward way to maintain their lawns, the PowerSmart 21-Inch 144cc OHV 3-in-1 Gas Push Mower presents a compelling option. This machine is designed for ease of use and effective grass cutting, making it an ideal choice for those who value simplicity and performance without unnecessary complexity. Whether you're dealing with a small suburban yard or a moderately sized property, this mower aims to deliver a clean cut and a hassle-free experience.
What truly sets this PowerSmart model apart is its blend of essential features and user-friendly design. It offers the versatility of 3-in-1 functionality – mulching, bagging, and side-discharging – allowing you to adapt to different lawn conditions and preferences. Coupled with a robust 144cc OHV engine, it provides ample power for most residential tasks, ensuring that even slightly overgrown grass is no match for its cutting deck.
Key Specifications
| Feature | Details |
|---|---|
| Engine | 144cc OHV |
| Cutting Width | 21 inches |
| Deck Material | Steel |
| Functionality | 3-in-1 (Mulch, Bag, Side Discharge) |
| Starting System | Recoil Start |
| Wheel Size | 8-inch front, 8-inch rear |
| Weight | Approximately 55 lbs |
Reasons to Buy
- Reliable 144cc OHV engine provides ample power for most residential lawns.
- Versatile 3-in-1 cutting system (mulch, bag, side discharge) adapts to various needs.
- Easy to start and operate, making it suitable for users of all experience levels.
- Durable steel deck and solid construction offer good longevity for its class.
- Practical 21-inch cutting width balances efficiency and maneuverability.
Reasons to Avoid
- It is a push mower, requiring physical effort to propel, which may be a drawback for larger or sloped yards.
- Lacks advanced features like self-propulsion or electric start, which are found on higher-end models.
4. Greenworks 21 lawn mower – Budget Friendly
For homeowners looking to ditch the gas can and embrace a cleaner, quieter lawn care routine, the Greenworks 80V 21" Self-Propelled Cordless Lawn Mower presents a compelling option. This mower is designed for those with medium to large yards who desire the convenience of cordless operation without sacrificing power or performance. Its self-propelled feature makes tackling inclines and larger areas significantly less strenuous, while the brushless motor technology promises efficiency and longevity.
What truly sets this Greenworks mower apart is its robust 80V battery system, which not only powers the mower effectively but also integrates into a wider ecosystem of Greenworks tools. This means you can potentially share batteries across trimmers, blowers, and more, offering a cost-effective and space-saving solution for your outdoor power equipment needs. It strikes a good balance between user-friendly features and powerful performance, making lawn maintenance a more enjoyable chore.
Key Specifications
| Feature | Details |
|---|---|
| Battery Voltage | 80V |
| Battery Capacity | 4.0Ah |
| Cutting Width | 21 inches |
| Drive System | Self-Propelled |
| Motor Type | Brushless |
| Deck Material | Steel |
| Features | LED Headlights, Mulching/Bagging/Side Discharge |
| Charger | Rapid Charger Included |
Reasons to Buy
- Powerful and efficient cutting performance with a 21" deck.
- User-friendly variable speed self-propelled system reduces effort.
- Quiet operation and zero emissions for an eco-friendlier lawn care experience.
- Part of a large 80V battery ecosystem, offering versatility with other Greenworks tools.
- Rapid charger minimizes downtime and gets you back to mowing quickly.
Reasons to Avoid
- Battery life may be insufficient for very large yards on a single charge without a second battery.
- Initial cost can be higher than comparable corded electric or basic gas mowers.
5. Senix 21 lawn mower – Top Performer
If you're looking for a reliable and straightforward gas-powered lawn mower for your medium-sized yard, the SENIX 144 cc Gas Lawn Mower is a fantastic option to consider. This 21-inch push mower is designed for homeowners who need a no-fuss machine that gets the job done efficiently. It offers a solid balance of power, ease of use, and essential features, making lawn care less of a chore and more manageable.
What truly sets the SENIX apart is its robust 144 cc 4-cycle engine, which provides ample power for tackling various grass types and conditions without bogging down. Coupled with its versatile 2-in-1 functionality (mulching and side discharge), this mower ensures your lawn not only looks neat but also stays healthy. It’s a no-frills workhorse that prioritizes performance and durability for the everyday user.
Key Specifications
| Feature | Details |
|---|---|
| Engine | 144 cc 4-Cycle Gas Engine |
| Cutting Width | 21 inches |
| Mowing Functions | Mulching, Side Discharge |
| Starting System | Recoil Start |
| Wheel Size | 8-inch Front, 8-inch Rear |
| Cutting Height Adjustment | 6 Positions |
| Deck Material | Steel |
| Weight | Approximately 55 lbs |
Reasons to Buy
- Powerful 144 cc engine handles most lawn conditions with ease.
- Versatile 2-in-1 mulching and side discharge capabilities.
- Simple 6-position cutting height adjustment for lawn customization.
- Reliable 4-cycle engine requires no oil/gas mixing.
- Durable steel deck and robust construction for longevity.
Reasons to Avoid
- Not self-propelled, requiring more physical effort on larger or sloped yards.
- Lacks a bagging option, which some users may prefer for tidiness.
6. Grasscool 21 lawn mower – Recommended
If you're a proud owner of a Troy Bilt 21-inch walk-behind mower and are looking to enhance its mulching capabilities, the Grasscool TB110 Mulching Blade is a fantastic upgrade. Designed to replace OEM part numbers 942-0741A and 742-0741A, this blade is engineered to deliver a superior mulching experience, finely chopping grass clippings and returning them to your lawn as natural fertilizer. It's an ideal choice for homeowners who want to maintain a healthier, greener lawn with less effort and without the need for frequent bagging.
This mulching blade stands out by offering a robust construction and a design optimized for efficient cutting and mulching. It's not just about cutting grass; it's about improving your lawn's health by returning valuable nutrients back into the soil. For those who value a clean lawn appearance and a commitment to organic lawn care, this blade provides a cost-effective and high-performance solution that can significantly improve the overall look and vitality of your turf.
Key Specifications
| Feature | Details |
|---|---|
| Blade Type | Mulching |
| Deck Size Compatibility | 21 inches |
| Replaces Part Numbers | 942-0741A, 742-0741A |
| Material | High-quality steel |
| Finish | Standard |
| Application | Lawn Mower Blade |
| Brand Compatibility | Troy Bilt (specific models listed) |
Reasons to Buy
- Significantly improves mulching performance for a cleaner lawn and healthier soil.
- Durable construction ensures longevity and consistent cutting.
- Direct replacement for specific Troy Bilt 21-inch mower models, ensuring easy installation.
- Cost-effective way to enhance lawn health and reduce maintenance effort.
- Reduces the need for bagging grass clippings, saving time and effort.
Reasons to Avoid
- Not suitable for users who prefer side-discharge or bagging options.
- May require a socket wrench and basic mechanical knowledge for installation.
7. EGO Power+ 21 lawn mower – Recommended
If you're tired of the hassle of gas-powered mowers – the fumes, the oil changes, the pull-starts – then the EGO Power+ LM2125SP Self-Propelled Cordless Electric Lawn Mower is a game-changer for your yard care routine. This mower is designed for homeowners who want a powerful, easy-to-use, and environmentally friendly way to maintain their lawns, especially those with medium to large yards who appreciate the convenience of self-propulsion. It offers a clean, quiet, and efficient mowing experience without compromising on performance.
What truly sets the EGO Power+ LM2125SP apart is its innovative Touch Drive™ self-propel technology, which allows you to intuitively control the speed with just your hands. Combined with the robust 56V ARC Lithium™ battery system, this mower delivers the power and runtime needed to tackle substantial lawns, all while operating at a fraction of the noise of traditional mowers. It represents a significant leap forward in cordless lawn care, offering a blend of advanced technology and user-friendly design that makes yard work less of a chore.
Key Specifications
| Feature | Details |
|---|---|
| Mower Type | Cordless Electric, Self-Propelled |
| Deck Width | 21 inches |
| Battery System | 56V ARC Lithium™ |
| Included Battery | 7.5Ah |
| Charging Time | Approx. 60 minutes (Rapid Charger) |
| Drive System | Touch Drive™ Self-Propel |
| Weight | 58 lbs (with battery) |
| Cutting Options | Mulching, Bagging, Side Discharge |
Reasons to Buy
- Innovative Touch Drive™ self-propel system offers intuitive speed control and reduces user fatigue.
- Powerful 56V ARC Lithium™ battery provides ample runtime and torque for medium to large lawns.
- Instant push-button start and quiet operation make for a hassle-free and neighbor-friendly mowing experience.
- Tool-free height adjustment and vertical storage capability enhance convenience and ease of use.
- Durable steel deck and high-quality construction ensure long-term reliability.
Reasons to Avoid
- The initial investment can be higher compared to basic gas-powered mowers.
- For extremely large properties (over half an acre), you might need to purchase additional batteries or plan for charging time.
8. WORX 21 lawn mower – Recommended
For homeowners looking to ditch the gas can and embrace a cleaner, quieter way to maintain their lawns, the WORX Nitro WG760 Cordless Electric Lawn Mower presents a compelling option. This self-propelled mower is designed to tackle medium to large yards with ease, offering a powerful and convenient alternative to traditional gas-powered machines. Its robust feature set, including variable speed control and intelligent cutting technology, aims to make lawn care less of a chore and more of an efficient task.
What truly sets the WORX Nitro WG760 apart is its blend of power, intelligence, and user-friendly design. It delivers the performance many expect from a gas mower without the noise, emissions, or hassle of fuel and oil. The inclusion of two high-capacity batteries and a charger right out of the box means you can get started immediately and have ample power for most residential lawns, making it a strong contender for those seeking a hassle-free, high-performance electric mowing experience.
Key Specifications
| Feature | Details |
|---|---|
| Cutting Width | 21 inches |
| Motor Type | Brushless |
| Battery System | 56V Lithium-Ion (2 x 5.0 Ah included) |
| Drive System | Variable Speed Self-Propelled |
| Deck Material | Steel |
| Mulching/Bagging/Side Discharge | Yes (3-in-1) |
| Weight | 67 lbs |
| Charge Time | Approximately 2 hours per battery |
Reasons to Buy
- Powerful and consistent cutting performance comparable to gas mowers.
- Variable speed self-propelled system for reduced user fatigue.
- Quiet operation and zero emissions for an eco-friendlier experience.
- Hassle-free maintenance with no need for gas, oil, or spark plugs.
- Includes two high-capacity batteries and a charger for immediate use.
- Compact vertical storage design saves valuable garage space.
Reasons to Avoid
- Battery charge time may require planning for larger lawns or extended mowing sessions.
- Steel deck, while durable, can be heavier than some composite alternatives.
9. WORX 21 lawn mower – Recommended
If you're looking to ditch the gas can and the hassle of cords for good, the WORX Nitro 21" Cordless Electric Lawn Mower is a fantastic option for homeowners with medium-sized yards. This mower offers the convenience of battery power without sacrificing the performance needed to tackle your lawn. It's designed for those who want a powerful, easy-to-use, and environmentally friendly way to maintain their grass.
What truly sets this WORX mower apart is its robust Nitro brushless motor and the inclusion of two high-capacity 5.0 Ah batteries, ensuring you have ample power and runtime to get the job done. It combines solid cutting performance with user-friendly features like multiple height adjustments and a generous cutting width, making lawn care less of a chore and more of a breeze.
Key Specifications
| Feature | Details |
|---|---|
| Motor Type | Brushless |
| Cutting Width | 21 inches |
| Battery | 2 × 5.0 Ah Lithium-Ion (20V Max) |
| Charge Time | Approximately 2 hours per battery |
| Cutting Height Adjustment | 7-position |
| Mulching/Bagging | Yes |
| Recommended Yard Size | Up to 1/2 acre |
| Weight | 58 lbs |
Reasons to Buy
- Powerful brushless motor provides excellent cutting performance.
- Dual 5.0 Ah batteries offer substantial runtime for medium yards.
- Quick-fold handle makes storage simple and space-saving.
- 7-position height adjustment allows for precise lawn care.
- Easy push-button start and intuitive controls for user-friendliness.
- Low maintenance requirements compared to gas mowers.
Reasons to Avoid
- Not a self-propelled model, which may be a consideration for larger or sloped yards.
- Battery charge time, while reasonable, means planning is needed if you run out of power mid-mow.
10. Greenworks 21 lawn mower – Recommended
For homeowners looking to ditch the gas can and the hassle of cords, the Greenworks 60V 21" Self-Propelled Cordless Lawn Mower presents a compelling solution. This mower is designed for those with medium-sized yards who desire the convenience of battery power without sacrificing performance. It offers a powerful brushless motor, a self-propelled system to ease the effort, and thoughtful features like LED headlights for extended mowing hours.
What truly sets this Greenworks model apart is its robust battery system and the inclusion of not one, but two 4.0Ah batteries along with a rapid dual-port charger. This means you get ample runtime and quick turnaround for recharging, ensuring you can tackle your lawn efficiently. The 21-inch cutting deck is a versatile size, and the self-propelled function makes navigating slopes and longer stretches significantly less strenuous.
Key Specifications
| Feature | Details |
|---|---|
| Motor Type | Brushless |
| Cutting Width | 21 inches |
| Battery System | 60V |
| Included Batteries | 2 x 4.0Ah |
| Charger | Rapid Dual-Port Charger |
| Runtime | Up to 45 minutes per charge (with included batteries) |
| Drive System | Self-Propelled |
| Deck Material | Steel |
Reasons to Buy
- Powerful and efficient brushless motor for excellent cutting performance.
- Included dual batteries and rapid charger provide ample runtime and quick recharging.
- Self-propelled system with adjustable speed reduces user fatigue.
- Easy push-button start and minimal maintenance requirements.
- 21-inch cutting deck is versatile for medium-sized yards.
Reasons to Avoid
- May not be sufficient for very large yards on a single charge, even with two batteries.
- Initial cost can be higher than comparable gas-powered mowers.
Our Top Picks for the best 21 lawn mower
Here are our top 3 picks based on performance, versatility, and user satisfaction.
Wrap Up the best 21 lawn mower
Choosing the right product depends on your priorities—engine power, self-propelled convenience, or cutting features. For those with larger or sloped yards, a self-propelled model is a wise investment. For smaller, flatter areas, a push mower can be perfectly adequate.
The best 21 lawn mower we reviewed offer solid value and features. Investing wisely ensures a rewarding experience for years to come, keeping your lawn looking its best.
FAQs Regarding 21 lawn mower
What is the best lawn mower for a small yard?
For small yards, a lightweight push mower or a compact electric model is ideal. They are easy to maneuver and store.
How much power do I need in a 21 lawn mower?
For most residential lawns, an engine between 140cc and 200cc is sufficient. If you have thick grass or challenging terrain, consider a more powerful engine.
Are electric 21 lawn mower as good as gas?
Modern electric mowers offer comparable performance to gas models, with the added benefits of being quieter, lighter, and requiring less maintenance. Battery life is a key consideration.
What does "3-in-1" mean for a lawn mower?
3-in-1 capability means the mower can mulch clippings, bag them for removal, or discharge them to the side. This offers flexibility for different lawn care needs.
How often should I perform maintenance on my 21 lawn mower?
For gas mowers, regular oil changes, air filter cleaning, and spark plug replacement are recommended. Electric mowers typically require less maintenance, mainly cleaning and blade sharpening.
Can I use a 21-inch mower on a very large lawn?
While a 21-inch deck is versatile, it might be time-consuming for very large lawns. Consider a wider deck or a riding mower for efficiency.
What is the advantage of a self-propelled mower?
Self-propelled mowers reduce the physical effort required, making them easier to use, especially on inclines or for longer mowing sessions.
Are there any specific features to look for in a 21 lawn mower for hilly terrain?
For hilly terrain, a self-propelled model with good traction and adjustable speed control is highly recommended. Ensure the engine has enough power to handle inclines.
