Top 10 Best Lawn Mower Blade Sharpener: 2023 Reviews & Buying Guide

A lawn mower blade sharpener is a vital tool for preparing a high and appealing lawn, especially in the mowing season. The mower blades need to be sharp so that the lawn can be cut in an effective and tidy manner by the mower blades. Furthermore, if the blades are properly sharpened, they will also not cause any damage to the grass. A professional and sharpened blade will take less time to cut the grass. A sharpened mower blade can even reach the lawn edges easily. In case you have an old blade, or if the blade has got dull, one of the best ways is to sharpen it with a mower blade sharpener. Finding the best lawn mower blade sharpener can be a hard task as there are so many different ones available. With the help of experts in the field, we make finding the perfect sharpener for your blades easy.

Top 10 Best Lawn Mower Blade Sharpener of 2023

We teamed up with professional gardeners, greenkeepers, and farmers to help us find the best lawn mower blade sharpener available on the market. With their knowledge and expertise, we selected a top 10 list of mower blade sharpeners of 2023 so you can pick the right one to keep your mower blades sharp.

1 – MAG-9000 Professional Lawn Mower Blade Sharpener by Magna-Matic

A lawn mower blade needs to be occasionally sharpened. One of the best tools for this task is MAG-9000 Sharpener by Magna-Matic. This model has been in the market for quite some time now and has an outstanding reputation. The sharpening blades of MAG-9000 are sure to guarantee you a professional cut. The design of the sharpener makes it easy to use and makes sharpening a quick process. One of the best features of the MAG-9000 is that it can sharpen the blades in a matter of 60 seconds only. Plus, it can sharpen a blade of any size.

Additionally, this easy to use sharpener has a high-speed voltage operation that is sure to help you save on electricity bills. With a unique design, the sharpener is a quite reliable and durable tool that will take care of both straight or flat blades easily. It is also easy to carry around as it is designed to be portable.

Key Features

  • Commercial lawn mower blades sharpener
  • 30-degree angles sharpening
  • Good for both right-handed and left-handed blades
  • 60-second sharpening
  • Made in the USA


  • Saves time
  • Easy to use
  • Fast sharpening
  • Quality built


  • Expensive

2 – 88-023 Professional 1/2 HP Lawn mower Blade Grinder by Oregon

To sharpen different kinds of lawn mower blades, one of the best options to go for is the Oregon 88-023. The blade grinder is a perfect grinder that has several benefits when it comes to sharpening mower blades. Oregon 88-023 can easily extend the lifespan of the lawn mower with the help of its amazing and powerful features. The adjustable handles and light make this model quite user-friendly. Safety is enhanced with the help of the light as it enables you to see even in the dark or foggy weather.

The blade balancer can be used to sharpen the blades with the help of a reverse motor. This motor is helpful if you want to sharpen both left and right-handed blades. The sharpener also comes with an easy to turn rotary that can easily adjust the handle and the knobs and help you make the adjustments in the height. It is convenient to remove the blade after sharpening. This way, you can easily switch on and off the safety switch. Additionally, being light in weight, the grinder is also easy to move from one place to another.

Key Features

  • On/Off safety switch
  • Reversing switch
  • rotary adjusting handle
  • Adjustable light included
  • Sharpens the cutting edge of up to 6 inches


  • Safe to use
  • Can be attached to an angle grinder
  • Restores edges quickly
  • Height adjustment is simple and fast
  • Arrives pre-assembled


  • Difficult to get a good edge and angle

3 – LLC Lawn Mower Blade Sharpener by MB Machine

The lawn blade sharpener by MB Machine is an advanced model that can be easily adjusted, allowing for mulching and standard blades. This tool by MB Machine is highly portable, making it easy to carry around. Also, there is a feature of direct mounting, which makes the sharpener easy to setup. Since it comes with a universal adapter pin, the sharpener can easily fit in with most of the grinders in the market.

The sharpener also comes with an adjustable head that helps in enhancing variability for different angles, especially for multiple blades. The tool does not come with a grinder but has a 5-year warranty.

Key Features

  • Adjustable Design
  • Direct Mounting
  • Adjustable Friction Arm
  • Minute to setup
  • Vice Head for holding the blade
  • 5-year warranty


  • Well-built and sturdy
  • Easy to manage
  • Uniform sharpening
  • Quick sharpening


  • Better hinge mechanism required

4 – 50603 Mower Blade Sharpener by Smith

Smith’s 50603 mower blade sharpener is a hand-cut tool to keep your mower in the best condition and enhance their life. The machine is simple and very easy to use and makes the use of a carbide blade that is pre-set and can smoothen and sharpen the edges with ease in a short duration. With a durable plastic head, the sharpener becomes very easy to hold while you work with it. This head is enhanced using a large finger guard that can provide you with safe and secure sharpening at each instance. The color of this sharpener is quite appealing, and it is not prone to catch dust and dirt, even after coming in contact with the dust. The blade sharpener is easy to use and at the same time, can be assembled quickly, making the tool one of the best products in the market.

Lastly, for proper and effective cleaning, the product comes with a wire-bristled cleaning brush that is quite effective in cleaning. To enhance convenience, there is also a tool handle along. It can be an excellent gift for your near and dear ones on occasions such as Father’s Day, etc.

Key Features

  • Quick sharpening
  • Durable plastic head
  • Cleaning brush included
  • Tool handle for convenience
  • Large Safety Guard
  • Replaceable carbide blade


  • High-quality steel brush
  • Sturdy built
  • Works smoothly


  • Not very durable

5 – Knife & Tool Sharpener by Work Sharp

In case you are looking for a sharpener that can work for professionals as well as beginners, then it is best to go for the Knife and Tool Sharpener by Work Sharp. The tool can sharpen almost all kinds of knives and blades, and at the same time, the process of operating it is quite simple.

Using its diamond belts, one can even sharpen or repair ceramic belts. The sharpener also comes with premium belts that enhance the flexibility of this tool and make it quite versatile. Since there are fine, medium, and coarse belts included, the sharpener can fulfill different tasks quickly. The granular belt can be used for repairing damaged blades, whereas the medium belt would be more suited for sharpening a generalized knife. The slender belt, also, is best for sharpening and honing serration or giving a quick touch-up to the blades. Lastly, the precision guides of these tools are worth mentioning. They are one of the great features of this tool as they give results that are consistent, fast, and repeated.

Key Features

  • Any knife can be sharpened
  • Flexible and unique abrasive belts
  • Precision sharpening guide
  • Adjustable handles
  • 1-year warranty


  • Cost-effective
  • Highly versatile
  • Easy to carry
  • Ideally sized
  • Effortless operation
  • Better machine control


  • Unsuitable for heavy-duty usage
  • Time-consuming

6 – Lawn Mower Blade Sharpener by Yellow Hornet

The lawn mower blade sharpener by Yellow Hornet is designed to make the blade last for a long time. It is designed such that it is easy to use, and sharp blades can be guaranteed all the time. Yellow Hornet sharpener ensures that you do not face any issues while sharpening the edges from different angles. Because of this, you have the freedom to grind at up to 30 degrees angle. The sharpening by Yellow Hornet is done professionally such that it is ensured that the mower can be conveniently used at all times. Additionally, the sharpener is quite comfortable and safe to use. Hence safety is ensured, and you need not worry about hurting your hands while sharpening the blades.

The blade sharpener is constructed with a material that is quite durable and strong. Thus, you can be ensured that it would last long. Additionally, the tool comes with a money-back guarantee, giving you complete peace of mind. Furthermore, it is a cost-effective option that you can own, whatever be your budget.

Key Features

  • Professional sharpening at 30 degrees
  • Made in the USA
  • 9” X 12’’ measurements
  • Simple operating procedures


  • Durable built
  • Top-quality material
  • Affordable price
  • 30-degree angle.


  • Honda lawn mower blades can’t be sharpened

7 – 5000 Sharpener by All American

The All-American blade sharpener is one of the best options for standard as well as munching blades. This is one of the most cost-effective options available in the market as of date. The tool can hold the blade easily and in a secure manner so that a great sharpening experience can be provided in the shortest time possible. Also, you can have peace of mind when it comes to the security of your fingers while you sharpen.

The product is also highly portable, making it easy to carry around. This makes the product highly flexible. It also has a cordless grinder. The tool is also quite lightweight and comes along with an M8 by 1.25 adapter pin that is responsible for attaching several grinders to the assembly. The sharpener can be replaced with a new one even after the effectiveness is lost. This results in a reasonable amount of savings. The product can also sharpen several blades easily and in an efficient manner in a hardly a minute.

Key Features

  • Standard and mulching blades
  • Cordless grinder
  • Includes adapter pin
  • Simultaneous multiple blade sharpening


  • Easy to use
  • Simple set up
  • Useful for various blade sizes
  • Durable


  • Can’t be used with hot water

8 – SK-1 Sharpening Kit BY American Lawn Mower Company

TheMower Sharpening Kit by American Lawn Mower Company is one of the best ways to keep the reel mower blades in perfect condition and at the same time, make sure that the cutting is smooth. This helps in reducing the time required for lawn mowing and also provides a sharp cutting tool. This sharpening kit is more of a DIY option with the help of which you can sharpen the blades of your mower on your own easily. Thus, you do not need a professional to sharpen the lawn mower blade, and thus, you save on money.

The sharpening kit by American Lawn Mower contains a back-slapping crank, a grinding compound, and an application brush. This means that the equipment has everything to ensure that you can sharpen the blades quickly and keep them in perfect condition. The tool will reduce your mowing time to half, giving you more time to relax and do other things. Furthermore, since the device is competitively-priced, it is quite affordable and has a durable construction, ensuring that it lasts for a long time.

Key Features

  • Reel mower sharpening kit
  • DIY kit
  • Back-lapping crank, a grinding compound, and an application brush included
  • Goes well with an American lawn mower, great States, and Scott’s mowers


  • All necessary components included
  • Competitively priced
  • Suited for push mowers
  • Good for first-timers
  • Mowing time is reduced


  • Not suited for all mowers

9 – 103N All-in-1 Knife Lawn Mower Blade by SHARPAL

There are different types of garden tools, and if you are looking for a sharpener that can be used with all these tools, then the All in one lawn mower blade by SHARPAL is the one that you should go for. This is a versatile tool that can be used for a variety of purposes and with several tools. With the help of this product, the process of sharpening blades becomes a convenient and easy task. With this tool, you do not need to purchase any additional sharpener for your other garden tools.

This tungsten carbide blade sharpener is useful for edge setting on even dull double-beveled tools. For single-beveled edges, you can even use the flat tungsten carbide. Additionally, there is also a ceramic rod that can be used to polish different types of blades. At the back of this tool, a wide-angle sharpener is available that can take care of thick blades. There is also a pre-set tungsten carbide available that can be used to sharpen shears and pruners.

Key Features

  • Multi-tasking tool
  • Versatile sharpener
  • Pre-set optimal sharpening tool
  • Can be used by different categories of people
  • Safety Hand Guard
  • 3-year warranty


  • High flexibility
  • Easily fits in the hand
  • Highly efficient
  • High level of performance
  • Durable built


  • Instructions need to be clear

10 – Model 5005 Sharpener by All American

The 5005 Sharpener by All American is high quality and affordable lawn mower blade sharpener. It comes with a unique design that can clamp the blade at the angle that you require while you use the guide arm and the pin attached to the grinder. This will give you the edge that you need. The sharpener is designed skilfully and is made from stainless steel and anodized aluminum. The sharpeners are also highly durable. They are suitable for both homeowners as well as lawn mowing businesses.

A tool is an economical option that can give different possibilities of customization to the user. The cutting edges can be adjusted in incremental angles of 5 degrees, starting from 15 degrees and goes up to 45 degrees. This sharpener is useful for both mulching as well as straight blades. The tool has an upper guide arm that is extended and can comfortably accommodate all kinds of blades. Additionally, it can be bench mounted and helps support blades with various sizes of threads. Also, this product is quite affordable.

Key Features

  • Cordless grinder
  • Four adapter pins
  • Multiple blade sharpening
  • Durable built
  • Cutting angles between 15 to 45 degrees


  • Very stable
  • Quick sharpening
  • Different types of blades can be sharpened
  • Easy to use
  • Outstanding quality


  • Difficult to set up

Best Lawn Mower Blade Sharpener Buying Guide

Choosing the best sharpener for your mower blade is not a simple task, even if you have a small yard mower. Several factors need to be considered, as well as several guidelines that should be followed before purchasing a lawn mower blade sharpener. Since there are different types of sharpening tools available in the market, it is crucial to understand the factors that influence the kind of sharpener that you buy for your lawn mower blade. However, first, it is essential to understand the different types of blades in the market.

Types of Lawn Mower Blades

There are different types of lawn mower blades available in the market according to the degree of efficiency and effectiveness that is required.


This is a high life blade that comes in a 2-in-1 design. It is one of the most popular types of sharpening a lawn mower blade. It allows for the right amount of airflow and gives a clean-cut along with a fast discharge of grass clippings.


This is an all-purpose blade that has a 3-in-1 design for efficiently mulching the clipping. This is particularly common in riding lawn mowers.

Factors to Consider before Purchasing

Quality and Design

Before purchasing any product, it is essential to ensure that the quality of the product is top-notch. The same goes for lawn mower blade sharpener. It is important to note that if a sharpener if highly-priced, that does not mean it has a better quality. Thus, you need to check the quality of the sharpener and ensure that it is a complete value for the money. It is best to check the reviews of the ones that you shortlist before you make your final selection.


The usability of a sharpener depends on whether you are right or left-handed. Equally important to consider is how much is the sharpener comfortable while using. If a sharpener is uncomfortable to use, you should not go for it as it can lead to injuries. A good sharpener would also reduce the amount of effort required and make you less tired while at the same time, giving you a higher level of efficiency.


 A sharpener is used to increase the efficiency of the lawn mower blade and sharpen lawn mower blade edges. Since it mainly plays the role of enhancing the life of a blade, it becomes imperative that the sharpener that you use should be itself durable and long-lasting. You should be able to use the sharpener for several years with complete peace of mind.


In addition to making the process of sharpening a comfortable and safe operation, a blade sharpener should also be able to sharpen the edges of a blade in the minimum amount of time possible. At the same time, the speed is something that needs to be taken care of as a sharpener that runs at a very high acceleration can fall off and further cause injuries. Similarly, fast speed can also overheat the mower blade and cause damage to it.

Some Additional Factors to Consider

Besides the above factors, there are some other factors that one should consider before purchasing a lawn mower blade sharpener.

Mounting System

 This is a T-Slot style in a mounting system. It helps in mounting the blades of the lawn mower safely. It also takes care that the blades can be easily adjusted with the sharpening tool.

Grinding Wheel

In addition to a mounting system, it is also essential to take care that the grinding wheel does not burn the blades. There should be a maintained level of tempered glass.

Sharpening Ports

To set up repeated sharpening angles like 20, 25, 30, or 35 degrees, it is vital to consider the role of sharpening ports.

Quick Change Guards

The change guards are responsible for the fast removal of grinding wheel and burr removal. In some cases, it can also be useful for speeding up the process of sharpening.

Power Cables

These are the source of power while you are working on sharpening your lawn mower blade. Hence, it is crucial to shut off the source and tools in the power cable. Also, it is essential to keep track of when a spark plug needs to be changed.

Vision Guards

The task of sharpening your mower blades is significant in itself. While you are at it, it is imperative to keep your eyes protected. The vision guards are responsible for protecting the eyes from any material that might be released while sharpening, such as metal clipping, etc.

FAQs On Best Lawn Mower Blade Sharpener

What angle should a sharp mower blade have?

A mower blade might become dull after some time and might require sharpening. While sharpening, the filing needs to be done at the same angle as the original one so that the performance is not affected. The bottom surface of the sharpener should not be filed as it can change the overall sharpening angle. While sharpening, only the top surface should be filed. The most common angle for a sharp mower blade is between 40 to 45 degrees.

How often should I sharpen my lawn mower blade?

The frequency of sharpening a lawn mower blade depends on how often the blades are used. In case the lawn mower is being used at home only, then sharpening the blades even once a year may be enough. In case the mowers are used quite often, or if you are into the lawn mowing business, the blades would be required to sharpen more frequently. The time to sharpen the blades is when you start noticing a reduction in performance. In case a blade is damaged, it should be immediately replaced.

Can I sharpen my mower blades with a power drill?

Yes. One of the ways to sharpen the mower blade is through the use of a power drill and a sharpening stone. Just power up and run the drill on the dull blade. Although there is no specific and defined period on how often the blades should be sharpened, however, if your usage is high, it is best to sharpen the blades every 3 to 4 weeks to maintain the sharpness. This will also reduce the chances of the blade getting dull.

How tight should mower blades be?

After the mower blades are correctly tightened, it is vital to ensure that they are adequately reinstalled back into the mower. This process needs to take care of as any callousness in this step, especially can lead to accidents or injuries. One of the points to keep in mind is the tightness of the mower blades. The riding mower blades need to be installed somewhere between 70- and 90-foot pounds of the torque. For the walk behind the mower blades, the installation should be done between 38- and 50-foot pounds of the torque.

How Sharp Should Your Mower Blade Be?

The blades of a mower need to be aggressively sharp, but at the same time, they should not be razor edge sharp. One should be able to touch the mower blade without being cut or getting injured. Although it is believed otherwise, however, a mower blade with a razor-sharp edge would not be able to reduce the grass in a better way. On the contrary, it might roll over, causing the blades to be chipped. Also, the sharper the blade, the earlier they would get dull, decreasing the life of the blade.


While purchasing the best lawn mower blade sharpener, you can get overwhelmed and confused. To help you in this task and make your work easier, we hope that the review of the top 10 blade sharpeners, as well as the detailed buying guide, was helpful. With this article, you are sure to find your perfect fit according to your requirements. So, go and purchase your perfect one and keep your lawn tidy and presentable.

In addition to this list, we also have great guides on lawn edgers, lawn fertilizers, zero-turn lawn mowers, lawn sprinklers, and lawn weed killers.