Best Lawn Mower Blade Sharpener Reviews – 2021 Edition

When using lawn mowers, one of the most important things is to ensure that the blade is sharp so that the mowing job can be done easily and efficiently. And the best way to ensure this is to get the best lawn mower blade sharpener for your mower.

There are many options to choose from. Finding the right one can quickly become overwhelming. Having a lawnmower with a dull blade on hand and having to sharpen it before the next mowing session is stressful enough as is.

There is no need to add the additional stress of finding the right sharpener. To make your job easy, we have reviewed the top 7 lawn mower blade sharpeners here with their features, advantages, and limitations.

1. Magna-Matic MAG-9000 Lawn Mower Blade Sharpener

Magna-Matic MAG
  • Sharpens to consistent 30-degree angles
  • Works with left and right-handed mower blades
  • Includes safety guards and additional tools
  • Sharpens mower blades in less than 60 seconds
  • Designed to sharpen a rotary lawnmower blade

Professionally made in the United States, the MAG-9000 mower blade sharpener from Magna-Matic comes completely assembled to let you start sharpening your mower blade right away. This commercial-quality blade sharpener can be used by professional landscapes and also sharpens conventional mower blades to a 30-degree angle.

You can rely on this sharpener to ensure that other surfaces of the blade are not affected. Another amazing thing about this tool is that it can sharpen left as well as right-handed lawn mower blades. It also comes with safety guards and ensures a safe sharpening session.

What more, this sharpener comes with all the required tools to get started. Moreover, MAG-9000 is quiet as compared to other similar blade sharpeners. It provides sharp blades and holds the edge securely when working on the blade. We hear the following from a user that is not in a lawn care business:

..never got the blade sharpening right before. Bought this Mag-9000, and it made a big difference in how easy it is to sharpen and that too faster. Blades are shaper and accurate. Best decision ever..

  • Easy and fast operation
  • Quiet and efficient with no vibrations
  • Durable and built to last
  • Well worth the cost
  • Carry handle for easy on-site use
  • Ultra-strong construction
  • Safety guards included
  • A bit pricey
  • Aimed at professional mowers
The MAG-5000 is a highly versatile blade sharpener that works with a variety of mower blades to keep them ready for use all the time. It is a great tool that delivers a safe, consistent, efficient sharpening of your tools. It comes with all the required things and fully assembled so that you can get started as soon as you receive the tool. This US-made Magna-Matic lawn mower blade sharpener serves commercial as well as professional users alike.
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2. Oregon 88-023 0.5HP Lawn Mower Blade Grinder

Oregon 88-023
  • Comes with adjustable light
  • Heavy-duty motor sharpens up to 6-inch cutting edge
  • Allows easy adjustment of height
  • Provides on/off safety switch
  • The reverse switch allows sharpening left and right-handed mower blades

A powerful grinder that sharpens various types of mower blades, Oregon 88-023 provides almost all the benefits of a blade sharpener. This tool is actually designed to enhance the life of the lawnmower and even give it a second life. The equipment comes with a light and adjustable handle to make it highly user-friendly.

The built-in light enhances safety as you can see the tool in dark or foggy weather. Moreover, it operates with a reverse motor and helps you sharpen large blades. It can sharpen both left and right-handed blades, making it one of the best sharpeners available on the market. Another exciting feature of this grinder is the easy to use rotary which adjusts the handle and knob to allow adjustment for the safety switch. It features a lightweight design and is easy to move from one place to another.

..I am very impressed with this purchase. Good thing is that it does not vibrate much at all. Starts smoothly and operates quietly. Easy to set up and my frist time around, I got the hang of it really quickly.

  • Easy to assemble and use
  • Delivers precise, accurate sharpening
  • Suits professional requirements
  • Somewhat tricky to get the right angle
  • Little too expensive
  • Takes more time to sharpen
With an array of powerful features, the Oregon lawn mower blade grinder is an affordable option for those who want an efficient and reliable blade sharpener. It is a lightweight tool that you can easily transport to and from the store. It is a great bargain for the price.
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3. Work Sharp WSKTS-W Knife and Tool Sharpener

Work Sharp WSKTS
  • Works for a wide range of knives with consistent results
  • Comes with easy to replace abrasive grit belts
  • Sharpens a variety of lawn and garden tools
  • 1-year warranty against defects

This tool sharpener gives you the freedom to sharpen any blade like a pro with ease, speed, and consistency. Work Sharp WSKTS-W Knife and Tool Sharpener is designed to provide you with the sharpest blades you could ever have.

It comes with abrasive grit belts that are easy to replace. They are made out of high-quality material and fulfil all your sharpening needs, whether you prefer coarse, medium, or fine. Moreover, these belts don’t destroy the blades while sharpening.

Another outstanding feature of this sharpener is the precision that allows it to deliver fast, easy, reliable, and consistent results. It can even sharpen kitchen knives to a 40-degree angle.

You can use this versatile tool to sharpen a wide range of garden and lawn tools as well as equipment, including pruners, scarpers, shears, and shovels. It also offers a powerful hand-held grinder to sharpen your mower blades to make them ready for work.

 ..Ask for a guy with zero patience, that would be me. I cannot give any time to sharpening a knife. I gave this unit a try and find that this is the best sharpener I have ever used. You can quickly learn the basics of using this sharpner and better yet try with a junk knife first. You will be amazed..

  • Amazing design for light-duty use
  • Flexible functionality
  • Easy to change belts
  • Works across a variety of knives and blades
  • Sharpens the blades pretty fast
  • Needs some practice to get desired results
  • Some quality issues reported
The Work Sharp Knife and Tool Sharpener is all-in-one equipment, you would need to always have sharp blades handy. It is a versatile blade sharpener with flexible functionality to get your tools ready for work in a matter of seconds. It also extends the life of your cutting instruments and makes an excellent option for blade sharpener for home and professional users.
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4. Smith’s 50603 Mower Blade Sharpener

Smith’s 50603 Mower Blade Sharpener

Another powerful hand-held mower blade sharpener in the market is Smith’s 50603, which helps make your mower effective and efficient. This machine is simple to use and makes use of a preset carbide blade to give a sharp and smooth edge in a matter of few minutes.

With a durable plastic head, the tool offers convenient operation. The oversized handle ensures you can use it with gloves. Moreover, the head features a large finger guard to provide a safe and secure sharpening each time you use it.

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The blade sharpener also comes with a wire-bristled cleaning brush resting in the handle. This DIY tool makes it super easy to keep your lawnmower blades always sharp and efficient. It ensures your grass always looks neat, sharp, and clean.Shortcode


  • Durable head for easy sharpening
  • Sharpens dull blade with just a few pulls
  • Includes a cleaning brush with wire bristles
  • Comes with a replaceable carbide blade
  • Large safety guard
  • Oversized handle for use with gloves

What We Like

  • Sharpens blades within minutes
  • Durable construction
  • Easy to use and convenient to hold
  • Affordable for the price

What We Do Not Like

  • Not intended to remove nicks and gouges
  • Works only on straight edges


The Smith’s mower blade sharpener is an ideal tool to keep all your blades in top condition and prolong their life. Easy to set up and use; this sharpener is attractive with the fantastic appearance and exciting features. It makes the perfect choice for those who are looking for an affordable yet powerful mower blade sharpener for their daily mowing tasks.

5. Yellow Hornet Lawn Mower Blade Sharpener

Yellow Hornet Lawn Mower Blade Sharpener

Another USA-made lawn mower blade sharpener, the Yellow Hornet tool, is designed to sharpen your blades professionally at a 30-degree angle. Not only does it keep your mower blade edges sharp all the time, but it also works on other knives and farm equipment. A lot of people love and rate this blade sharpener for its exciting features and powerful performance.

It is an affordable choice for a mower blade sharpener and provides value for money. It is made in the United States by experienced professionals so you can stay assured that it is durable and has a long life. This sharpener enhances the life and performance of your mower blades and makes them useful at service. It is quite stable and convenient to use when sharpening your mower blades. You can learn how to work with this sharpener by watching a video tutorial.


  • Made professionally in the U.S.A
  • Sharpens at 30-degree angle
  • Easy to use
  • Affordably priced
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What We Like

  • Delivers consistent, professional results
  • Stable and easy to operate
  • Made using durable material
  • Built to last

What We Do Not Like

  • Does not support a variety of mower blades
  • Makes some vibration


The Yellow Hornet Lawn Mower Blade Sharpener is undoubtedly one of the best tools one can use at home to keep all the mower blades and other knives and garden tools in top condition. It is affordable and has a high rating. It guarantees value for money as it comes handy whenever you want to sharpen any tool.

6. All American Sharpener 5000

All American Sharpener 5000

If you are in search of a blade sharpener that works with standard as well as mulching blades, the All American Sharpener 5000 is the right choice for you. It is one of the most budget-friendly options in the market today.

It holds the mower blade securely to provide a safe, sharpening experience with high speed. This tool ensures the complete safety of your hands when sharpening any tool. Moreover, it is portable and includes a cordless grinder so that you can easily carry the product from one place to another. It is also lightweight and can be transported between the lawn and the store with ease.

This sharpener delivers consistent results every time and takes the guesswork out of mower blade sharpening. Setting up this tool is super easy and quick. It can be clamped to almost any surface and can be removed from the mounting bracket for convenient storage.


  • Sharpens multiple types of blades
  • Portable with the use of cordless grinder
  • Easy setup
  • Pivoting head allows sharpening mulching blades
  • Allows sharpening two sections of a mulching blade at a correct angle
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What We Like

  • Stable and efficient at work
  • Perfectly angled and consistent
  • Dual-angle capability for mulching blades
  • High-quality and easy to use

What We Do Not Like

  • Somewhat difficult to use with mulching blades
  • Price is on the expensive side


The All American Sharpener 5000 is an ideal option for a portable, efficient mower blade sharpener that sharpens standard and mulching blades easily and quickly. It can sharpen multiple blades in a matter of seconds and saves a lot of time.

7. American Lawn Mower Company SK-1 Reel Mower Sharpening Kit

American Lawn Mower Company SK-1 Reel Mower Sharpening Kit

Designed to keep all the grass blades in the best condition, ensuring smooth cutting, the Reel Mower Sharpening Kit from American Lawn Mower Company helps you reduce the time you spend on mowing. It is a DIY kit that allows sharpening your mower blade at home, saving you money and eliminating the need to look for a professional.

The kit includes an application bush, grinding compound, and back-lapping crank. It also comes with a detailed instruction manual to help you get started quickly. This blade sharpener is designed to work with Scott’s Reel Mowers, American Lawn Mower models, and the Great States.

This tool ensures you can reduce the cutting time by more than half so that you can focus on other things. Moreover, it is made up of durable material and has a long life.

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  • Cuts down on mowing time
  • Includes components to get started
  • Designed to work with several mower models

What We Like

  • Easy to use
  • Affordable price
  • Quick operation

What We Do Not Like

  • Needs some tweaking to get the best results


For an affordable price, the American Lawn Mower Company Reel Mower Sharpening Kit is an excellent choice for anybody looking to cut down on mowing time. With everything needed for safe and effective sharpening, this blade sharpener provides an excellent option to sharpen cutting tools, and one would not regret buying it.

Final Thoughts

When it comes to sharpening your lawnmower blades, the best lawn mower blade sharpener can prove to be useful, without the hassle of finding a professional to sharpen your blade.

With so many great options to choose from, you can find the right blade sharpener that meets your requirements and expectations when it comes to lawn care. Make sure that the product you buy is durable and affordable. Moreover, consider purchasing the tool from a reputed seller to ensure you get a high-quality tool for your lawn maintenance.

Frequently Asked Questions

How Sharp Should Your Lawn Mower Blade Be?

While mower blades can be aggressively sharp, but not so sharp as a razor’s edge. You should be able to touch the mower blade with your hand without getting cut. It is not true that a lawnmower blade having a razor-sharp edge cuts the grass better.
On the contrary, a sharp blade is likely to roll over and cause chipping and nicking. Moreover, too sharp mower blades can get duller quickly, and you may need to sharpen more frequently, thus reducing the blade’s life.

How Often Should You Sharpen Lawn Mower Blades?

The frequency of sharpening the mower blades depends on how frequently you use it. If you use the blade only at home, you may need to sharpen it only once in a season.

However, if you are professional, your mower blades may need to be sharpened more often. A simple rule is to sharpen the blades when you see a reduction in the mower’s performance. You should replace damaged blades immediately.

How Do You Sharpen a Lawn Mower Blade?

You can sharpen your lawnmower blade in a few simple steps:

Step 1. Remove the mower blade and note which side faced down so that you can reinstall it correctly.

Step 2. Fix the blade in a vise in an angular position with anyone was cutting edge facing upwards.

Step 3. Sharpen the blade at an angle using a file until you achieve the desired edge. See that you don’t sharpen excessively.

Step 4. Replace the blade in the lawnmower. Ensure that it is positioned correctly.

How Do You Know that Your Lawnmower Blade Needs Sharpening?

The best way to determine when your lawnmower blade needs sharpening is to notice the performance of the mower. When you see that the lawnmower has begun leaving behind grass blades poking up here and there, your blade has probably gone dull and is pushing them rather than cutting through it. If you did not sharpen the blades last mowing season, you should do it this year.

Do I Need To Sharpen a New Lawn Mower Blade?

No, new lawnmower blades do not need to be sharpened. However, there are chances that some new blades come with small coats of paint, which can be removed by sharpening. The good idea is to mow a small part of the lawn with a new blade and look at the grass blades. If you see that they are cut nicely, you should not waste time sharpening the mower blade.

Should I Sharpen Or Buy A Lawn Mower Blade?

You can consider sharpening your lawnmower blades when the Tips of your grass start getting ragged and brown. Most lawn mower manuals recommend sharpening blades after every 25 hours of use. Others suggest sharpening it once in a year before the mowing season. You can consider replacing the blade if you find any problems like bending, cracking, or wearing.

What is the Cost of Sharpening a Lawn Mower Blade?

If you sharpen your mower blades yourself, you only incur the cost of the blade sharpener and your time. You can buy a simple sharpener for as little as $20. However, if you want a professional to sharpen the blade, your local repair shop or mower sales store would do it for you for about $10. Costs can vary depending on where you live and the type of blade you have.

Can you Sharpen a Lawn Mower Blade Without Removing it?

While the most efficient way to sharpen a mower blade is to remove it, some tools help you take off nicks and chips without having to remove the blade. Depending on the design of your lawnmower, you might be able to sharpen a blade without having to remove it. But taking it off is recommended as it permits better access to cutting edges and visual inspection of any damage caused to the blade.

What is the Best Angle to Sharpen a Lawnmower Blade?

You should sharpen the cutting edge of the lawnmower blade with the use of a grindstone or file keeping the blade at about a 45-degree angle. When you sharpen the blade with a bench grinder, you can sharpen it by moving back and forth against the grinder wheel.

What Does a Dull Lawn Mower Blade Do?

Dull lawnmower blades don’t just affect the look but also the health of the lawn. Dull blades don’t cut the blades of the grass cleanly, and the grass gets ripped or torn instead, resulting in the brown grass. Such ragged edges also make the grass prone to parasites and diseases. The dull blade also splits individual grass blades rather than cutting through them. This can lead to more strain on the mower and longer mowing time.

Do Sharp Mower Blades Make a Difference?

Sharp blades make a difference to the look and health of your lawn. When your lawnmower blade is dull, it wears off the top part of the grass blades instead of cutting them cleanly. Such ripping can affect the health and appearance of the grass. Alternatively, when you use a sharp mower blade, the grass is cut neatly. This reduces stress and damage and gives a healthier, greener, and more beautiful lawn.

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