10 Best Electric Knife Sharpeners 2025 in the United States

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.

The Chef’sChoice 15 Trizor XV EdgeSelect Professional Electric Knife Sharpener is a solid choice for anyone looking to keep their knives in top condition. One of its standout features is its ability to convert traditional 20-degree knife edges to a sharper 15-degree edge, which is great for achieving high performance in cutting tasks. The sharpener boasts a three-stage EdgeSelect system, utilizing diamond abrasives in the first two stages for sharpening and honing, while the third stage polishes serrated blades, making it versatile for various knife types.

Ease of use is another strong point, with advanced flexible spring guides that help users maintain the correct angle during sharpening. The straightforward on/off switch adds to the convenience, allowing users to operate it without any hassle. Additionally, the sharpening time is relatively quick, taking about a minute for first-time sharpening and just 10 seconds for resharpening, which is efficient for busy kitchens.

There are a few drawbacks to consider. While it's designed for maximum effectiveness, the noise level of 65 to 75 dB might be bothersome in quieter environments. The weight of 4.19 pounds may also make it less portable for those looking to store it away easily or transport it. Furthermore, the sharpener is specifically tailored for converting and sharpening knives, so it may not be the best fit for individuals who require a multi-functional tool that can handle other types of kitchen utensils. The Chef’sChoice 15 Trizor XV is ideal for home cooks and culinary enthusiasts who prioritize knife performance and ease of use, although its noise and weight may be considerations for some users.

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.