How Often Should You Sharpen Kitchen Knives?

Kitchen knives are an essential tool in any kitchen.

They make meal prep tasks such as slicing, dicing and chopping a breeze, but they do require maintenance.

One of the most important aspects of keeping your knives in good condition is to make sure they are sharp.

A dull knife can be more dangerous than a sharp one as it requires more force to cut and can slip more easily.

However, how often should you sharpen your kitchen knives?

In this blog post, we will explore the factors that affect knife sharpness and provide guidance on how often to sharpen your knives, as well as methods for sharpening them.

Factors that affect knife sharpness

Type of knife: Different types of knives have different edge angles and are made of different materials.

Some knives, like Japanese knives, have a steeper edge angle and are made of harder steel, making them more difficult to sharpen but also hold their edge longer.

Other knives, like Western knives, have a shallower edge angle and are made of softer steel, making them easier to sharpen but also requiring more frequent sharpening.
Quality of knife: The quality of the knife also plays a role in how often it will need to be sharpened.

Knives made with higher quality materials and better craftsmanship will hold their edge longer and require less frequent sharpening.
How often the knife is used: The more frequently a knife is used, the more quickly it will dull.

Knives used daily or several times a week will need to be sharpened more often than knives used infrequently.
How the knife is used: The type of food being cut and the cutting technique used can also affect the sharpness of a knife.

Harder or tougher foods and improper cutting techniques can cause a knife to dull more quickly.
How the knife is cleaned and stored: Proper cleaning and storage of knives can also affect their sharpness.

Knives should be washed by hand and dried thoroughly to prevent rust and corrosion.

They should also be stored in a safe place, either in a knife block or a sheath, to protect the edge from damage.

How to tell when your kitchen knives need sharpening

Signs of dull knives: Some signs that your kitchen knife is dull include difficulty cutting through food, a need to use more force to make a cut, the knife snagging or tearing food instead of slicing through it cleanly, or the knife not being able to make precise cuts.
Tests for determining sharpness: One simple test is to gently press the side of the blade against a piece of paper and see if it can easily slice through.

Another test is to cut a tomato, a dull knife will squish the tomato, while a sharp knife will make a clean slice.
When to sharpen vs when to replace: If the knife is dull, it can usually be sharpened, but if the knife is damaged or has been sharpened many times, it may be time to replace it.

One good indicator that a knife needs to be replaced is if it has become difficult or impossible to sharpen to a satisfactory level.

Methods for sharpening kitchen knives

Manual sharpening (using a sharpening stone): Sharpening stones come in a variety of grits, with a lower grit (such as 100-200) being used for heavy-duty repair of a damaged edge, and a higher grit (such as 600-1000) for final honing and polishing of an edge.

When using a sharpening stone, it's important to maintain the proper angle of the blade to the stone, and to use oil or water as a lubricant to protect the blade and aid in the sharpening process.

Electric sharpeners: Electric sharpeners can be a convenient option as they take the guesswork out of maintaining the proper angle and speed of sharpening.

Some models also have different stages, with coarse grits for heavy repair and fine grits for final polishing.

However, they can be more expensive and can overheat or damage blades if not used properly.
Sending knives out for professional sharpening: An alternative is to send your knives out for professional sharpening.

This option can be more expensive but can be a good choice if you have a high-value knife or collection of knives, or if you feel uncomfortable sharpening them yourself.

DIY hacks for sharpening knives: Some people use household items such as a ceramic mug or the back of a spoon as a sharpening surface, however, this is not recommended as it can damage your knives, also some people use a honing steel to realign the edge, which can improve the sharpness but it does not sharpen it, only a sharpening stone can do it.

How often should you sharpen kitchen knives?

As discussed earlier, different types of knives, quality of the knife, frequency of use, how the knife is used, and how the knife is cleaned and stored, all play a role in how often a knife will need to be sharpened.

Taking these factors into consideration can help you determine the appropriate sharpening schedule for your knives.
Recommended sharpening schedule for different types of knives:

  • High-quality knives used frequently: every 2-4 months
  • Mid-quality knives used frequently: every 6 months
  • Low-quality knives used frequently: every 3-4 months
  • Knives used infrequently: every 6-12 months

Tips for maintaining knife sharpness over time:

  • Always use the right cutting technique and proper cutting board
  • Use honing steel on a regular basis to realign the edge
  • Store knives in a safe place, either in a knife block or a sheath
  • Keep knives clean and dry to prevent rust and corrosion
  • Hand wash your knives and dry them thoroughly
  • Do not put knives in the dishwasher.
  • Be mindful of your usage and take note of when it starts to dull, and sharpen accordingly.

It is worth mentioning that even when the knife is kept in optimal conditions, it will lose sharpness eventually and will need to be sharpened.


In conclusion, maintaining a sharp kitchen knife is essential for safe and efficient meal preparation.

Factors such as the type and quality of the knife, frequency of use, and how the knife is used and stored, all play a role in determining how often a knife will need to be sharpened.

While there is no one-size-fits-all answer to how often to sharpen a knife, you can keep your knives sharp and in top working condition by considering these factors and utilizing the proper sharpening methods.

It's important to experiment with different sharpening methods and to find what works best for you and your knives.

Remember, a well-maintained, sharp knife is a safer and more effective tool in the kitchen.