Knife sharpener

Top & Best Knife sharpener Review 2022 – How to Select Ultimate Buyer’s Guide

Top & Best Knife sharpener: Which are the best in 2022?

Welcome to! Let’s talk about knife sharpeners. Currently, there are several options on the market, so it is important to choose the model that best suits your needs.

Knife sharpeners are very useful and necessary in any kitchen, be it professional or amateur. If knives were previously sharpened in stones or emery, technology has made this task simpler and safer.

The product can be found in various sizes, materials and prices. Our mission here at ReviewBox Brasil is to provide a guide to help you decide which knife sharpener to buy.

First, the most important

  • Before purchasing a knife sharpener, it is important that you know which blades to use it on. Not all devices are compatible with more sensitive blades or saw blades.
  • There are manual and electric sharpeners, which are a little more expensive. In this list, we show the main manuals for being better evaluated among consumers.
  • The cost of the equipment will vary according to the design, material of the discs and fittings. Here, we list sharpeners ranging from R $ 60 to R $ 180.

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Best knife sharpeners: Our favorites

Keeping the knife sharp is always easy for cooking. Although it is not an item present in every home, having a knife sharpener at home speeds up the process a lot and has other advantages that we will see throughout this review.

We have selected some of the best knife sharpeners on the market so you have a choice. Check out:

  • Tramontina Diamond Knife Sharpener
  • AnySharp Tungsten Knife Sharpener
  • Taidea Diamond Double Sided Pocket Sharpener
  • Tramontina Double Sided Diamond Sharpener

Buying Guide

There is nothing worse in the kitchen than trying to prepare food with a blind knife. In addition to requiring more effort from the cook, it can spoil the food or even cause serious accidents.

Throughout this guide you will find all the details you need to make your purchase safely.

What is a knife sharpener and how does it work?

There is no doubt that knives are fundamental instruments in any kitchen in the world, be it professional or amateur. Inseparable companions of the great chefs – who display them, often as trophies -, are also great partners of the housewives who cook daily for the family.

It is important that the knife is always with its blade very sharp, so that it can fulfill its greatest function: cutting. And that’s what a knife sharpener is for, leaving the equipment always ready for cutting.

Sharpening a blade can be a simple act. There are people who sharpen it at the edge of the sink, for example, and even in ceramic mugs. But it can also be a more complex art, which requires a lot of knowledge and years of practice.

Renowned chefs argue that it is very subjective to talk about sharpening knives, as each professional uses a different type of knife. The sushiman, for example, uses thinner-bladed knives than those who work with noble meats, which require thicker blades. Each knife has a different point, a function.

The most experienced ones use stones, chairas, emery and other items to sharpen them. While many amateur cooks prefer the safety of home sharpeners. Everything will depend on the expected result and also on the value of the instrument that is being sharpened.

Therefore, in order not to risk your health or the efficiency of your knives, it is better to resort to the practicality of a sharpener, be it manual or electric. After all, nothing worse than a kitchen with cordless knives.

Why is it important to have a knife sharpener at home?

In a kitchen, sharpening knives is as essential as changing car engine oil in a workshop. If this process is not done, it can cause problems and wear when cooking. And having a sharpener at home can make this job a lot easier.

Gastronomy professors argue that a very sharp knife allows for a more precise cut of the food, in addition to preventing them from oxidizing and leaving dark spots on meat or some vegetables.

Blind knives can be dangerous for those who use them. They slip on the surface of the food and can cause accidents with cuts. It is also worth remembering that a cordless knife can crush food instead of cutting it, causing it to lose its juices at the time of cutting.


A practical example is when we cut an onion. When using a blunt knife, it crushes the onion. Instead of cutting it, it makes it release the sulfuric acid that causes that famous cry.

Chefs argue that a very sharp knife makes all the difference in the mis en place (pre-preparation) of a dish. This step is the one that requires care in the precision of cuts and in the future presentation. Sharpening the knife in a sharpener still saves you time.

Poorly cut or serrated meat with a badly sharpened knife can impair appearance and even food preparation. This is because the fibers break and do not give uniformity to the meat, affecting the structure of that piece at the time of preparation.

What are the advantages and disadvantages?

We have already presented in this review several advantages of having a knife sharpener at home. It makes working in the kitchen easier, as well as being practical and safe in a very necessary task in preparing food.

Other than that, their metallic discs can increase the useful life of the knives. But of course, like any product, there are still some disadvantages that we need to take into account.

Because it is a specific device, it ends up being more expensive than stones or plates. Electric sharpeners, of course, are still a little more expensive than manual ones.

Another problem is that some of the products do not sharpen all types of blades. Some of the more sensitive ones, like ceramic knives, need more specific equipment, so it is good to be attentive to the purchase, or it may end up spoiling your utensil.

How much?

Of course, equipment like this is not as cheap as other homemade sharpening methods, like stones or ceramic mugs. But they are becoming more and more accessible on internet shopping sites.

The prices of knife sharpeners can vary from R $ 20 to R $ 700 (specific for ceramic knives), according to the design, materials and functionality. Remembering that manual sharpeners, of course, are cheaper than electric ones. Here, we list sharpeners ranging from R $ 60 to R $ 180.

Where to buy?

There are some tool shops and large magazines that sell knife sharpeners.
On the internet, there are several websites that you can find them, such as:

    • Amazon

The advantage of buying online is that you find more variety of models and also the best offers. There is the option to also search for products used in the Free Market.

Purchasing criteria: Factors for comparing knife sharpener models

It is always good to pay attention to some questions before buying the knife sharpener.
We want to show you what are the main factors that you must take into account in order to make a good choice of purchase, and also so that you are not deceived:

  • Model
  • Discs
  • Fittings
  • Safety

Let’s explain one by one so that you don’t have any doubts about what to take into account.


We mentioned earlier that they can be manual or electric. In our review, we list only manual sharpeners as they are better rated in the internet rankings.

This type of sharpener is cheaper and also more versatile. Although electric sharpeners are faster, they are more expensive and cannot sharpen other types of blades, such as pocket knives.


There are equipments with one, two or three sharpening inserts. The number of inserts often diversifies the sharpener’s functions.

This means that when there is more than one option, each serves to sharpen different types of blade. Typically, the first level is the coarsest and the last is the thinnest. Pay close attention because the simplest sharpeners have only one sharpening slot.

Here’s how a double knife sharpener works:


Each sharpener slot will have two discs, which can be steel, ceramic or diamond. The discs are responsible for sharpening the blade of the knives. So it is important to check which knives can be sharpened in each device.

As much as sharpeners work best on kitchen knives, they can also be used to sharpen other types of blades, such as pocket knives and fishing knives. If you are looking for a more versatile knife sharpener that can be used in a variety of situations, carefully check the information on the discs before finalizing your purchase.


There are different aspects of security. Some devices have a support rod, which you must hold with one hand and sharpen the knife with the other. You control the firmness of the equipment, this increases security when handling.

There are also models with suction cups that attach to smooth surfaces, leaving the user’s two hands free to work. But it is important to check that the knife sharpener is firmly attached. Analyze which safety item best fits your cooking style.

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