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10 Best Knife Sharpeners Of 2020 – Reviews & Buying Guide

The knife must be sharp; otherwise, it will slow you down and make it difficult to cut or chop things swiftly.  But finding the best knife sharpeners is not as easy as you type in search engine and pick the first one that pops up.

You’ll find it overwhelming to pick the best knife sharpener out of hundreds of products. To help you in making an informed decision, we bring you a list of the best knife sharpeners. They will solve all your knife sharpening problems.

Best Knife Sharpeners

Comparison Chart

ProductsDimensions (inches)WeightVoltageAnglesWarrantyRating
Dimensions (inches)
10  x 4.25 x 4.25
Weight
4.42 pounds
Voltage
110 Volts
Angles
15 degree
Warranty
3-year warranty
4.6 out of 5 stars (4.6 / 5)
Dimensions (inches)
5.5 x 10 x 6
Weight
3.1 pounds
Voltage
120 Volts
Angles
15 to 30 degrees
Warranty
1-year warranty
5 out of 5 stars (5 / 5)
Dimensions (inches)
10.8 x 11.2 x 12.8
Weight
9.37 pounds
Voltage
110 Volts
Angles
20, 25, 30, 35 degree
Warranty
2-year warranty
4.4 out of 5 stars (4.4 / 5)
Dimensions (inches)
12 x 5 x 5
Weight
4.6 pounds
Voltage
220 Volts
Angles
14
Warranty
3-year warranty
4.6 out of 5 stars (4.6 / 5)
Dimensions (inches)
9.9 x 7.2 x 4.8
Weight
2.95 pounds
Voltage
120 Volts
Angles
Adjustable
Warranty
1-year warranty
4.4 out of 5 stars (4.4 / 5)
Dimensions (inches)
9.2 x 2 x 2
Weight
8 ounces
Voltage
110 Volts
Angles
15 to 20
Warranty
3-year warranty
4.4 out of 5 stars (4.4 / 5)
Dimensions (inches)
17.7 x 5.3 x 2.4
Weight
1.9 pounds
Voltage
Manual
Angles
10,15,18,20,21
Warranty
90-day money back
4.4 out of 5 stars (4.4 / 5)
Dimensions (inches)
3.5 x 1 x 0.1
Weight
0.32 ounces
Voltage
Manual
Angles
23
Warranty
Limited lifetime
4.4 out of 5 stars (4.4 / 5)
Dimensions (inches)
3 x 1 x 0.3
Weight
1.6 ounces
Voltage
Manual
Angles
Adjustable
Warranty
N/A
4.5 out of 5 stars (4.5 / 5)
Dimensions (inches)
8.5 x 8.4 x 2.5
Weight
7 ounces
Voltage
Manual
Angles
20,25,30
Warranty
1 year warranty
4.7 out of 5 stars (4.7 / 5)

Top 10 Best Knife Sharpeners Reviews

1 Chef’s Choice Knife Sharpener

Chef’s professional knife sharpener is the best choice for converting your knife to XV 15-degree edges from the conventional 20-degree edges that are trademark of the household knives. These improved edges will give you high performance, and you will be able to tell the difference in performance instantly.

This knife sharpener sharpens the straight edges and the serrated blades. It is accomplished through the advanced stage of stropping and diamond abrasives. The noise created while sharpening the edges is between 65dB and 75dB.

What’s more?

It is easy to use. There are no difficulties or problems in understanding its way of use. The spring guides are flexible, advanced, and patented. They can be adjusted for automatic and accurate control of the angle of sharpening. Plus, it has a simple switch for on and off.

Here’s the best part…

It has three stages for providing the optimum versatility to ensure the perfect sharp edges for cutting or chopping.

The first two stages have 100 percent diamond abrasive plating to not only sharpen but also hone the edges. The third stage uses an abrasive system that is flexible and patented. It polishes the knife and increases the life of serrated knives.

But that’s not all…

The time needed to sharpen these knives is just one minute when you are sharpening for the very first time. But if you are re-sharpening, then it takes just 10 seconds approximately.

Chef’s Choice Knife Sharpener
Our rating:4.6 out of 5 stars (4.6 / 5)

Pros

  • Easy to use.
  • It has three stages for sharpening.
  • Just 1 minute time for sharpening.
  • 3-year warranty.
  • Convert to 15-degree edges.

Cons

  • It takes off too much metal.

2 Work Sharp Ken Onion Knife Sharpener

This home knife sharpener comes with a guide for adjustable sharpening. The reason it is the best kitchen knife sharpener is because of its preciseness to produce edge bevels of 15 to 30 degrees. It is the best angle for a kitchen knife. It makes the cutting and chopping of meat and vegetables very easy and quick.

Its motor needs a voltage of 120 volts and a current of 1.5 amps for working for a continuous hour. Plus, the speed of the motor is variable. It means that it can handle any task, whether it is grinding or honing. The motor has more power, and the cooling has improved.

The best part…

The motor provides the choice of a honing of slow speed or grinding of high speed. The belts are of premium quality, flexible, and abrasive. It provides you with a strong and long-lasting edge, which is razor-sharp and convex.

Is that all? No, wait…

The results of using this knife sharpener are fast, precise, and repeatable. There is no calibration time or set up time. The 6000 grit belt measures half inches for getting better contact with the serrations, gut hooks, and other edges that are hard to reach.

Moreover, it does not just sharpen knives. It can be used to sharpen serrations, edges tools, gut hooks, and scissors. This way, you will not be limited to just one item, you will be able to sharpen a lot of other objects as well, and that wouldn’t require any extra effort or cost.

Work Sharp Ken Onion Knife Sharpener
Our rating:5 out of 5 stars (5 / 5)

Pros

  • Sharpening guide is adjustable.
  • Variable speed of the motor.
  • Fast, precise, and repeatable sharpening results.
  • It has premium abrasive belts.
  • Warranty of 1 year.

Cons

  • Not suitable for tool steel knives.

3 Work Sharp Tool Sharpener

This sharpening system is dry and air-cooled. It is a complete package. It is not just for knives but also for chisels, plane irons, spokeshaves, carving tools, and lathe tools. This amazing sharpening system can be used to sharpen all these and is not restricted to just one thing.

The best part…

There is no need for jigs. The sharpening port provides precise and bevel angle settings that are repeatable. These are 20, 25, 30, and 35 degrees. These settings at these degrees are suitable for chisels and plane irons, which are up to 2 inches wide.

Plus, you can achieve the perfect micro-bevel of 5 degrees fast re-honing.

How does the motor help?

The motor of this tool sharpener is 1/5 HP with a speed of 580 rpm. This motor has an airflow that is routed and cooling system of the heat sink. It allows the blades to be sharpened quickly without the heat damaging the blade.

No matter how much load is put on, the low rpm wheel maintains its speed. It provides improved consistency. It means you no longer need to worry about the weight this sharpener can take or if its speed will be compromised.

That’s not all…

The accessories of this knife sharpener are easily available. A huge variety of standard six-inch, abrasive disks can be attached to its wheel. You do not need to find a specific item that is unique or difficult to find.

Work Sharp Tool Sharpener
Our rating:4.4 out of 5 stars (4.4 / 5)

Pros

  • No need for jigs.
  • Accessories are available.
  • Powerful 1/5 HP motor.
  • The sharpening system is air-cooled.

Cons

  • Not appropriate for flattening the backs of chisels.

4 Wusthof Electric Sharpener

It gets quite troublesome to efficiently cut the vegetables with a dull knife while making dinner. Whether you are a professional cook or an ordinary one, you know how an unsharpened knife affects the performance. It affects your slicing and dicing activity in the kitchen.

Wusthof pEtec electric sharpener is one of the best knife sharpeners. It helps you sharpen the blades of the knives you use in the kitchen. This knife sharpener comes with a three-stage sharpening technology.

More on this later!

You can place it on your countertop in the kitchen. The stainless steel grey color increases the beauty of your kitchen.

This knife sharpener comes with diamond abrasive wheels. They give you the ability to sharpen the edge of the blades precisely.

Wusthof uses pEtec technology. What does that mean?

The device gives you a high-class cutting performance. You can consistently sharpen your knife. It gives you a good quality cutting at a 14-degree angle.

Wusthof knife sharpener gives you the best results in less than 60 seconds. It is easy to use. All you need to do is put your knife in the blades guides. Then you have to pull your knife through and allow the weight of the knife to press the grinding wheels.

After repeating this process 2 or 3 times, you get a sharpened knife. You don’t have to worry about damaging the blades of the knife. The springs mounted in the device keep them safe.

Wusthof Electric Sharpener
Our rating:4.6 out of 5 stars (4.6 / 5)

Pros

  • Easy to use.
  • Quiet operation.
  • Stainless steel.
  • Light-weight.
  • 3-year warranty.

Cons

  • Not consistent enough.
  • Limited 14-degree edge.
  • Hard to use for small knives.

5 Presto Knife Sharpener

If you want to tune-up the blade of your kitchen knife, this is the best knife sharpening kit. It features a 2-stage sharpening system, and a 120 V AC. Do you want to have complete control over sharpening your knives?

Do you want more?

This device gives you the freedom to control precisely the level of sharpness you require. You don’t have to do any guessing. The device sharpens the blades precisely at the most appropriate angle.

If you want to have a razor-sharp edge for your knife, this is the ideal knife sharpener. Within seconds you can have a professionally sharpened knife.

The best thing…

You can use this sharpener at the convenience of your home. This sharpener is made from ultra-hard material.

Presto 120V sharpener gives you a precisely angled edge. Stage 1 detects the angle needed to sharpen the knife. Stage two gives you a sharpened edge, just like a professional knife.

You don’t have to work in the kitchen with a blunt knife. It is an impressive knife sharpener which gives perfection to your knives.

This knife sharpener is well-designed and well-engineered. It helps you sharpen your old and rusty knives.

When you are using a Presto ever sharp knife sharpener, you don’t have to adjust the angles. This knife sharpener helps you with multiple sharp kinds of knives.

Is that all?

If you are a professional chef, you’ll love the flexibility of this knife sharpener. It allows you to sharpen knives with different thicknesses. You can select different sharpening modes according to the thickness of your knife.

For light-weight knives, the thin setting mode is optimal. You can switch between the medium and regular settings for heavy and thick knives.

Presto Knife Sharpener
Our rating:4.4 out of 5 stars (4.4 / 5)

Pros

  • Suitable for sporting and kitchen knives.
  • Ultra-hard material to sharpen precisely.
  • Automatic blade guide to decide the angle.

Cons

  • A bit aggressive.

6 Chef’s Choice 4643 Knife Sharpener

If you want to get rid of the horrible cuts, you should consider buying Chef’s Choice 4643 knife sharpener. This knife sharpener eliminates the need to go to a professional to sharpen your knife. You can deal with your dull knives at the comfort of your house.

What’s more?

Chef’s Choice 4643 comes with a super-sharp cutting edge technology. You can transform your blunt knife into a fine one.

Dull knives require some sharpening to allow you to cut smoothly. Chef’s Choice 4643 helps you cut the onions like butter. You don’t have to spend an ample amount of time sharpening your knives.

Here’s more…

It beautifully slices through your food without affecting its look. You don’t have to deal with a nasty looking meal. Chef’s Choice 4643 knife sharpener is easy to use. You can sharpen your knives to your desirable sharpening needs.

The best thing is you can sharpen different kinds of knives. This device does not keep your knives dull. You can increase the lifespan of the knives in your kitchen.

It is a manual knife sharpener easy to use and easy to clean. You can detach the module from the device for washing it. If the module wears off, you can get it replaced.

A high-quality diamond abrasive discs can sharpen your knives precisely for long-term use. The diamond abrasive wheels are reliable and trustworthy. They last for a longer period.

The crisscross sharpening technology gives you a smooth and cutting edge precision. You also get to choose between the angles from 15 to 20 degrees.

Chef’s Choice 4643 Knife Sharpener
Our rating:4.4 out of 5 stars (4.4 / 5)

Pros

  • 3-stage technology.
  • Easy to use.
  • No power needed.
  • Detachable and durable.
  • Dishwasher safe.

Cons

  • Difficult to hold.
  • Wears off quickly.

7 Edge Pro Knife Sharpener

One of the best things about this professional knife sharpener is that it gives you the best angle. You can sharpen your blades and knives at the best angle possible. You can adjust the angle of your knife based on the kind of knife you are using.

Furthermore, you are not restricted to any angle limitations. The sharpening angles are adjustable. You can choose between 10,15,18,21, and 24.  It gives you the flexibility to sharpen different knives.

What’s more?

You can choose the speed of sharpening on your own. There is no restriction of any limited speed level. This knife sharpener kit gives you smooth and fast knives. You can cut anything without any marks. This kit does not leave any streaks on the knife. It also does not wear out the shape of the blades.

Having this kit handing in your kitchen means you don’t have to work with a blunt knife anymore. Nobody likes a dull knife. If you want to sharpen your knife, this kit comes with a simple system.

That’s not all…

It is a replaceable kit. When it wears out because of excessive use, you can easily change it with a new one.

Just in a matter of minutes, you can have sharp knife edges. It is a manual kit which ensures that the blade of your knife is not damaged. During the sharpening process, you can prevent them from tampering.

It comes with an extremely portable design. Weighing only 1.9 pounds, it is easy to take along wherever you go. It also comes with a carrying case. When the device is not in use, you can store it with ease.

Edge Pro Knife Sharpener
Our rating:4.4 out of 5 stars (4.4 / 5)

Pros

  • No power needed.
  • Optimal sharpening system.
  • Easy to use and clean.
  • Portable construction.

Cons

  • Not suitable for big knives.

8 Smith’s PP1 Sharpener

Smith is a popular brand that is known for producing manual and electric sharpeners. They are made from different abrasive materials. Knife sharpening enthusiasts are going to love this sharpener.

Are you looking for the best knife sharpeners?

Smith is the fastest growing supplier of sharpening products. It gives its customers the best quality sharpeners, which are multi-functional.

You can surely feel the difference when you have Smith’s PP1 sharpener in your kitchen. It is an ideal pocket-friendly sharpener for those who work outdoors.

Here’s the best part…

It transforms your dull and damaged knife into a sharp one. Your knife becomes as good as new.

This sharpening device comes with a sharpening slot. All you need to do is put your knife in the slot at an angle of 90 degrees. Apply little pressure to the knife and pull it towards yourself. Repeat this sharpening process for a few times till you get the desired results.

The two sharpening slots make it easy for you to sharpen your knife. No matter what kind of knife you have, it can tackle the heaviest ones.

It is a light-weight and compact sharpener. You can take it on your camping and fishing trip. It possesses ceramic stones that give you sharp blade edges. The diamond-coated rod allows you to sharpen serrated edges.

Smith’s PP1 Sharpener
Our rating:4.4 out of 5 stars (4.4 / 5)

Pros

  • Transforms your dull knife into a sharp one.
  • Ultra-light-weight.
  • Super easy to use.

Cons

  • Time-consuming.

9 Fallkniven DC3 Knife Sharpener

Fallkniven fulfills your knife sharpening needs. It is specially designed for knife sharpening enthusiasts to tackle different knives. You expect a high level of consistent performance from this sharpening kit.

It is specially designed to bring convenience to your kitchen. If you are a professional chef, you know that possessing a sharp knife is not enough. You have to get a knife sharpener sooner or later. Your knife is going to get dull after a certain period. There is no need to replace it with a new one.

It is a multi-purpose knife sharpener that comes with two sides. It allows you to handle different kinds of knives. You can use the ceramic side for normal sharpening needs.

If you are looking for more aggressive sharpening capabilities, you can use the diamond side. You can hone the blades of the knife perfectly.

Do you want more?

Fallkniven is a pocket-friendly knife sharpener. You don’t need any kind of power source to operate it. The knife sharpening angle is also adjustable.

For your convenience, it comes with a leather slip pouch. You can store it with ease when it is not in use. Fallkniven knife sharpener is easy to use and does not damage your knife.

Fallkniven DC3 Knife Sharpener
Our rating:4.5 out of 5 stars (4.5 / 5)

Pros

  • Light-weight and pocket-friendly.
  • Two sides to sharpen your knife.
  • Makes the job of sharpening your knives a breeze.

Cons

  • Feels coarse.

10 Warthog Classic-II

Warthog V-sharp Classic-II comes with a unique design. It truly serves your purpose in the kitchen. It looks complicated to use. However, it gives you reliable and amazing results.

It easily sits on your kitchen counter and put a sharp edge on your knife’s blade.

This model gives you an impressive sharpening performance. You can sharpen different kinds of blades. It comes with an angle adjustability feature. These angles are from 20, 25 to 30. This V-shaped sharpener gives you razor edge sharpness.

What do you want more?

If you have this sharpener, you don’t have to spend countless hours sharpening your knives. It comes with sturdy construction. The steel is durable and makes it last longer.

It is an extremely versatile sharpening kit that sharpens different kinds of knives fast and quickly. You’ll love the razor edge it produces.

The springs in this sharpener are great that keeps a perfect pressure on the blade. You won’t believe it, but you can even shave with the knives sharpened through this machine.

Warthog Classic-II
Our rating:4.7 out of 5 stars (4.7 / 5)

Pros

  • Sharpens all knife blades quickly.
  • Heavy-duty steel construction.
  • Light-weight and portable.
  • 1-year warranty.

Cons

  • Takes a little practice.

Best Knife Sharpeners Buying Guide

Here are a few key factors that you should keep in mind when buying a knife sharpener to get the most out of it.

Types of Knife Sharpeners

Three basic types of knife sharpeners are available in the market. Through its features and functions, you will be able to decide which one is the most suitable for you. It will make the buying decision easy for you as you will know what you are looking for and what to avoid.

Whetstones

A Waterstone or whetstone is a rectangular block of stone. Its function is similar to that of sandpaper. These blocks can be used to hone the edges of knives. Each stone has a different level of coarseness. It is used to sharpen the knife by running the knife over the stone at a certain angle.

Electric or Manual Sharpeners

Electric sharpeners usually consist of 2 to 3 steps for creating, sharpening, and at last, honing the knives. In the first step, all that needs to be done is the sharpening of dull blades. The last step requires the honing of the blade through a fine grit. Most of these electric sharpeners have guides to help you through sharpening at the perfect angles.

Knife Sharpener

Honing Steel

Honing steel sharpeners are also called sharpening steels. Despite their name, most of the time, it so happens that the honing steel sharpeners don’t sharpen knives. Their main job is to hone the knife blade. It is done through certain cuts and styles. They can do the only minor sharpening. It consists of four most common cuts. These are:

  • Regular cut steels
  • Diamond steels
  • Combination cut steel
  • Ceramic cut steel

Grit

Grit means how small or large the abrasive material is. The abrasive material is the one that is present on the sharpening stone. The lower the number of grit is the coarser the stone, and the higher the grit number, the less coarse the stone.

It is better to buy a knife sharpener that has a high grit number so that the knife can be easily sharpened.

Size

The size of the angle of the knife sharpener depends on the kind of knife sharpener you have bought. The most common angle for knives used in the kitchen is 20 degrees.

However, some knives have an angle of 15 degrees, which is ideal, whereas the 20 degrees angle is the traditional one.

Time

You should also see the time it takes to sharpen the knife. Some knife sharpeners hardly take a minute the first time they sharpen a knife, whereas others take longer.

It is up to you which one you purchase. But make sure that it is not taking too much of your precious time. It should be fast, precise, and efficient.

Suitability

You should also check to see if it is suitable for you if you are looking for a simple knife sharpener since there is no need for a lot of searches.

But if you are looking for a knife sharpener that also sharpens gut hooks, edges of other materials, scissors, and more, then you need to do a thorough search. It is because most of the knife sharpeners only sharpen knives, but a full system sharpens a wide variety of stuff.

Knife Sharpener Guide

Safety

Safety should be your priority. That is why you should always be careful while using the sharpener. Make sure it is something you can handle and not end up hurting your hand in the process of sharpening the knife. The blades can hurt you if you are not careful.

That’s why you should buy something that is automatic or has a simple on and off switch. The easier to use it is, the fewer chances there are of you getting hurt.

Voltage and Power

Before buying an electric knife sharpener, always make sure the power of the motor and how much voltage it requires. It will help to determine how powerful it is and for how long it can go on without getting damaged. The more power the motor has, the better the sharpening results. Plus, the knife will be sharpened in less time.

Versatility

The knife sharpener should be versatile. There should be various angles of sharpness. The bevel type also varies. Bevel means the shape of the edge of the blade. It can be convex bevel, chisel bevel, double bevel, flat bevel, and hollow bevel.

Plus, the knife sharpener should be able to sharpen other objects as well and be restricted to just knives. The more versatility there is in the knife sharpener, the more chances it has of being great at sharpening. Moreover, versatility is always good in a product. It shows the ability of a product to perform multiple functions simultaneously.

Conclusion

The best knife sharpener among all the others is Work Sharp Ken Onion Edition Sharpener. There are various reasons for this choice. It provides a wide variety of angels from 15 to 30 degrees, whereas the others provide either just 15-degree angels or 20-30 degree angles.

This one provides the most. Furthermore, it has a 6000 grit belt, which is not provided by anyone. Plus, it can be used to sharpen a variety of other objects as well and not just knives. It includes serrations, gut hooks, scissors, and much more. That is why it is the best knife sharpener.

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