Many tools make a kitchen, but none are as essential as a quality set of chef knives. Not only are they vital in cutting up ingredients for meal prep, but a great knife can cut your time in the kitchen almost in half. Even the most expensive knives lose their edge and become dull. With a blunt blade, tasks like chopping, mincing, and dicing become tasks that could risk injury to yourself and others. A quality knife sharpener revitalizes dull blades, allowing for effortless and precise cuts. No longer will something as simple as chopping peppers take forever and a day. If ease of use and safety aren’t enough of a draw, how about cold hard cash? In addition to safety and convenience, investing in a quality knife sharpener is also the better financial decision. With a little money out of pocket, a knife sharpener can extend the lives of your knives, which means you don't have to replace them as often. No matter how you slice it, this helpful kitchen tool has a lot going for it, and this list offers the best options available. Want the sharpest tool in your kitchen? Keep your knives razor-sharp with our top knife sharpener picks for 2025.