Top 10 Best Electric Knife Sharpeners in 2020 (Chef's Choice, Presto, and More)

This electric knife sharpener can sharpen knives of both 15 and 20 degrees. Unlike other products, it can be used with several different types of knives, such as serrated knives and pocket knives. It has diamond grinding wheels and comes with a three-year guarantee.

A few reviewers remark that there is a steep learning curve with this sharpener. Making a dull knife a little sharper is easy, but to get it really sharp is trickier. 

Reviewers praise the flexibility of this sharpener as it can handle European and Japanese knives. They say that once the technique is mastered, sharpening knives is a quick process. Reviewers find the sharpener to be solid, durable, and very quiet.

This two-stage electric knife sharpener has two compartments underneath the grinding wheels to catch metal filings that may come off. It sharpens stainless steel knives, but it can be used with alloy and carbon ones, too.

Reviewers say that to get this knife sharpener to work correctly, knives must be inserted at the exactly correct angle. They also report that any amount of pressure on the wheels will make them halt.

However, many reviewers found this sharpener very easy to use but do advise reading the instructions first. They say that sharpening knives with it is very quick and that most knives only need a few passes to get their sharpness back.

Although this sharpener is for 15-degree angle knives, it can convert 20-degree knives to 15. It can sharpen both straight-edge and serrated blades, and the third sharpening stage is specially constructed to help prolong the lives of serrated blades.

It appears that several reviewers received refurbished sharpeners. These arrived in plain packaging and didn't work correctly. Reviewers that received new sharpeners say that it can be tricky to get the best results and advise following the instructions closely.

Although it may be tricky to master, reviewers report that their knives became very sharp after using this product. Several reviewers say their knives became razor-sharp and that their edges were neat and uniform.

This two-stage sharpener can sharpen knives and an additional slot specifically for scissors and screwdrivers. The grinding wheels are made from corundum (a form of aluminum), and the sharpener comes with replacement wheels.

This sharpener needs some cooling downtime between uses, which some reviewers find inconvenient. They also report being unable to sharpen chef knives.

However, they like that it's very easy to use and effective, even for scissors. They also appreciate that the unit is stable due to its rubber feet, and they praise its small size.

As well as having three stages to sharpen and hone your knives, you can also select the thickness of your blade. The sharpener will then adjust to the best angle for each knife.

Some reviewers report that the motor in this sharpener isn't very strong, and even the slightest pressure on the wheels when pulling a knife through will stop it from working. To use this sharpener correctly, it only needs gentle pressure.

Reviewers like that the sharpener can be set for different blades and say this makes it easier to get the right angle. With the right angle and level of pressure, they say it is very quick and easy to use. 

This sharpener consists of three stages; the first two are electric, and the last one is manual. All three have diamond wheels, and the sharpener is suitable for several types of knives, including pocket and hunting knives. 

Reviewers report that the slots for the knives are thin, making it very difficult to sharpen knives with thicker blades. Several reviewers didn't receive an instruction manual with their purchase and found it difficult to use the sharpener correctly without it.

Overall, reviewers say that there is a learning curve, but it is easy and quick to use once you get the hang of it. Several people recommend watching tutorial videos on YouTube to fully master how to use it. Reviewers also praise how sharp their knives are after using this product! 

This stylish sharpener comes in four colors, and there is a removable magnet in the base that will attract any metal shavings that are come off your knives. This unit is easy to clean, and the diamond-coated wheels can grind and hone your blades.

A few reviewers note that there is too much room for the knife to move when pulling the blades through the sharpening wheels. This makes it tricky to keep a consistent angle and can result in uneven sharpening.

For many reviewers, this sharpener does a great job of sharpening their knives, especially compared to manual sharpening. They love the variety of colors available and say it looks great in their kitchen.

With this sharpener, you can sharpen both stainless steel and ceramic knives, although it isn't suitable for serrated blades. The diamond grinding wheels can be easily removed for cleaning or replacement. Plus, this product can handle even larger chips.

Several reviewers state that the diamond wheels wear down quickly. The manufacturers suggest replacing them every year, but this is too frequent and inconvenient for many reviewers.

Reviewers confirm that this sharpener does a good job of rescuing dull and chipped knives. They say that it works well with ceramic knives, but it requires a light hand and patience.

This two-stage sharpener is a hybrid of electric and manual models. The coarser first stage is electric and will put a sharp edge on your knife, whereas the second manual stage hones the blade. The sharpener is smaller than other products, and it has a non-slip rubber base.

Reviewers say that this sharpener works best with long and thick knives and doesn't work with as wide a range of knives as some other units. Reviewers also note that the electric stage stops if too much pressure is applied when sharpening.

Reviewers say this unit effectively sharpens everyday kitchen knives and like the option of honing the blade with the ceramic final stage. They say that the sharpener is quiet and, once mastered, easy to use.