10 Best Electric Knife Sharpeners 2025 in the United States

The Work Sharp Ken Onion Knife Sharpener is an excellent choice for anyone looking to keep their knives, scissors, and even serrated blades in top shape. Its standout feature is the adjustable sharpening system, allowing users to customize the sharpening angle for different types of blades, which is particularly beneficial for achieving precise edges. The use of flexible abrasive belts ensures that you get a consistent and professional-level sharpening experience at home. Plus, with electronic speed control, it makes the process fast and efficient, which is a big plus if you're not familiar with traditional sharpening methods.

One of the major attractions is its ease of use, making it suitable for both novices and experienced users alike. The design, developed in partnership with knife-making expert Ken Onion, focuses on providing a user-friendly experience while still delivering high-quality results. Additionally, the sharpener is portable, weighing only 2 pounds and having compact dimensions, so you can easily store it or take it with you as needed.

However, there are a few drawbacks to consider. Some users might find that the price is higher compared to basic sharpeners, which could be a deterrent for those who only need occasional sharpening. Furthermore, while the sharpening system is versatile, it may take some time to learn the optimal settings for different knives, requiring a bit of practice for the best results.

The Chef’sChoice Professional Electric Knife Sharpener is designed to cater to both casual cooks and culinary enthusiasts by offering precise sharpening for various types of knives. One of its standout features is the ANGLESELECT system, which allows users to choose between a 20-degree edge for general use and a finer 15-degree edge for precision slicing. This versatility is ideal for anyone who has a range of knives in their kitchen. The sharpener uses 100% diamond abrasives, which are known for their durability and effectiveness in creating a fine edge.

The DIZOR ENGINEERED design is another highlight, as it forms a longer-lasting, arch-shaped edge, enhancing the longevity of your knives. Precision angle guides ensure that each blade is sharpened accurately, removing the guesswork and making the process straightforward even for those new to knife sharpening. This sharpener is compatible with both straight-edge and serrated knives, adding to its functionality.

It is relatively lightweight at 4.15 pounds and has compact dimensions (10”L x 4.25”W x 4.25”H), making it easy to store and portable. However, it should be noted that the sharpener has been on the market since 2008, which means that there may be newer models with more advanced features available. Despite this, its performance and ease of use make it a reliable choice for maintaining a sharp edge on your knives.

The Work Sharp Knife and Tool Sharpener Mk.2 is a versatile electric sharpener designed to handle a wide range of blades beyond just kitchen knives, including outdoor tools, lawn mower blades, scissors, and serrated knives. Its use of abrasive belts that conform to blade edges provides an adaptable sharpening surface, which is a strong point compared to traditional fixed-angle sharpeners. The inclusion of extra belts and a two-speed motor adds flexibility, allowing users to adjust power for heavier tools or delicate knives. The built-in edge guide helps maintain consistent angles, making it easier for users who may not be confident with manual sharpening.

With its compact size and lightweight design, it is fairly portable and easy to store. This model features a medium grit abrasive, which is good for general sharpening but might require additional steps or separate tools for very dull or damaged blades. While it doesn’t list multiple sharpening stages explicitly, the adjustable belt speed somewhat compensates for this by catering to different sharpening needs. Its strong 3-year warranty and Oregon-based design and calibration add confidence in build quality and durability.

The sharpener is easy to use and compatible with various blade types, making it a solid choice for homeowners looking to maintain all their edged tools with one device. However, professional sharpeners or those wanting very fine precision edges might need more specialized equipment.