Skip to Content

5 Signs You Need to Replace Your Kitchen Knife + How Often

As an Amazon Associate, we earn from qualifying purchases with no additional costs for you.

As much as we would like them to, our kitchen knives do not last forever! Some people try to hang on to their favorite kitchen knives as long as possible, but at some point, the inevitable time will come to replace your knives. How do you know when your knives are beyond salvaging and the time has come to throw out your old knives and replace them?

A kitchen knife should be replaced when the knife’s condition impedes its use. The following signs may indicate the need for replacement.

  1. The blade is worn down.
  2. The blade is cracked.
  3. The tip is distorted or broken.
  4. The handle falls apart.
  5. The knife is no longer comfortable to use.

Our knives may have served us well over the years, but it is a kitchen tool, and like all tools, they wear out and need replacing. We often hold on to our old knives for sentimental reasons much longer than we should. Look for these signs that you have held on to your kitchen knives too long, and they should be replaced.

If you are interested in checking out the best kitchen knives, we recommend buying knives made by the Wüsthof company. You can find them by clicking here (Amazon link).

How Often to Replace Kitchen Knives?
How Often to Replace Kitchen Knives?

How Long Do Kitchen Knives Last?

When you find a knife that you are really comfortable with that fits your hand well, holds an edge, and simply works well for you, it is an unpleasant thought that the knife is past its prime and needs replacing.

A well-made, good-quality kitchen knife can last a lifetime and even be passed down to your children. A frequently used knife may have a considerably shorter lifespan, ranging from 5 to 10 years, depending on how the knife is used, maintained, and cared for.

The amount of time kitchen knives last will depend on several aspects of the knife and its use.

  • Quality of the knife materials. Quality knives are made from superior materials that have a longer lifespan than cheaper materials. 
  • Quality of manufacture. How well the knife is made will contribute to the longevity of the blade. Poor workmanship will reduce how long a knife lasts, while good workmanship will extend it.
  • Care and maintenance the knife receives. A kitchen knife, like any tool, requires maintenance and care to keep it working well. A poorly maintained knife will not last as long as a well-cared-for blade.
  • Frequency of use. The more a knife is used, the more it will wear, shortening its useful life in the kitchen.
  • Correct use of the knife. A knife that is not used for its intended purpose will suffer additional wear and damage that will limit its time of service in the kitchen. 

Can Kitchen Knives Go Bad?

Can Kitchen Knives Go Bad?
Can Kitchen Knives Go Bad?

Kitchen knives are some of the hardest working knives in your household, resulting in these knives suffering excessive wear and going bad or becoming unusable.

What are some signs you can look out for to give you an indication that your knife is no longer performing as it should and it is time to consider a replacement?

Signs your kitchen knife is past its prime can include any or all of the following.

1. The Knife Blade Is Worn Down

A frequently used knife must be sharpened more often. The combination of use and sharpening will wear the blade steel down to the point where the knife must be re-ground to re-align and re-establish bevels and the knife profile.

This may be possible, but eventually, there will not be enough steel to retain the blade shape and dimensions, which can affect the knife’s performance.

In some cases, paying for a knife repair may be more expensive than replacing the knife with a new one.

2. The Blade Is Cracked

If your kitchen knife is high-carbon steel, like a Japanese kitchen knife, the steel is quite brittle. A sudden impact, such as dropping the knife or chopping on a hard surface, can crack the steel.

There is usually no remedy for a cracked blade. In this instance, a replacement is inevitable.

TIP: Are you looking to buy a new whetstone? Check out our recommendations (we personally use the first three ones):

Our PRO choice whetstones combo (Amazon links):

Our budget choice (Amazon link): Sharp Pebble Extra Large Sharpening Stone Set

3. A Distorted Knife Tip

The knife’s tip is the section of the blade with the least steel. This makes the tip susceptible to deformation or breaking off if the knife is dropped or used inappropriately.

The tip may shear off on a carbon steel blade, but on a stainless steel knife, the tip may deform. Once a knife tip deforms, it is difficult to restore the tip without the steel being wavy and weakened, making it prone to bend again.

TIP: Probably one of the most common accidents with a knife is dropping the knife, which can result in a bent knife tip. Check out the DIY guide on how to fix it in the article below:
Can You Fix A Bent Knife Tip? Try These 4 Simple Methods

4. The Knife Handle Falls Apart

The handle on a knife is crucial to the safe use of a sharp knife. If the handle is loose on the knife’s tang, it could result in the knife slipping when used and causing a severe laceration.

Normal use of a knife takes its toll on the handle material and the method the handle is secured to the knife. In some cases, the handle can disintegrate and fall apart.

While it may be possible to have another handle made and fitted to the knife, the cost may not warrant the expense of an old knife that is past its prime. The money may be better spent on purchasing a new knife.

5. The Knife Is No Longer Comfortable To Use

Comfort when using a knife is key. A knife that is uncomfortable to use will result in you not using the knife. 

If the knife has worn to the point that it is no longer a pleasure to use, it is time to look for a replacement that will better serve the purpose.

TIP: If you are interested in checking out the high-quality kitchen knife set with a long lifespan, we recommend buying a knife set made by Wüsthof company. You can find this set by clicking here (Amazon link).

How Long Should a Good Chef’s Knife Last?

How Long Should a Good Chef's Knife Last?
How Long Should a Good Chef’s Knife Last?

A chef’s knife is a multi-purpose knife and, as such, will probably see more use than any other knife in your kitchen. Even so, a good-quality chef’s knife is made to sustain this type of use and last well.

A good quality chef’s knife can last a lifetime if it is well-maintained and well-cared for. A good quality knife will not last this long if it is not given the correct treatment and use. Lower-quality knives will last a considerably shorter time and would probably need replacing within five years.

TIP: If you want to make your kitchen knives last longer, you need to maintain them properly. One of the best options is using oils for knife blades. Check out the best oils for kitchen knives in the article below:
These Are The 2 Best Oils For Kitchen Knives (+ How to Use)

How Often to Replace Kitchen Knives?

How Often to Replace Kitchen Knives?
How Often to Replace Kitchen Knives?

Many people ask how often kitchen knives should be replaced, but this question will need to be answered by the knife owner. There is no standard timeframe for knife replacement frequency.

A kitchen knife should be replaced when the quality of the knife has deteriorated to the point that the knife is difficult or uncomfortable to use or if the knife has sustained irreparable damage. If the knife is still functional, keep on using the knife until this status changes.

Kitchen Knife Maintenance FAQs

Q: How often should I sharpen my kitchen knife?

A: Regular sharpening ensures optimal performance. Depending on usage, a kitchen knife should be sharpened every few months or when you notice decreased efficiency. However, honing with a honing rod can be done more frequently to maintain the blade’s edge.

Q: What materials are best for kitchen knives? 

A: High-carbon stainless steel is a popular choice due to its durability, sharpness, and rust resistance. Other materials like ceramic and Damascus steel are also favored for specific purposes.

Q: How can I prevent my kitchen knife from rusting? 

A: To prevent rusting, always dry your knife immediately after washing. Store it in a dry location, and consider using blade guards or knife blocks. Regular maintenance and oiling can also prevent rust.

Q: Is it better to hand wash or machine wash kitchen knives? 

A: Hand washing is recommended. Dishwashers can be harsh on knives, causing them to dull faster. Hand washing ensures the blade remains sharp and prolongs the knife’s lifespan.

Q: What’s the difference between a chef’s knife and a paring knife? 

A: A chef’s knife is versatile, designed for multiple tasks like chopping, slicing, and dicing. A paring knife, on the other hand, is smaller and designed for precise tasks like peeling and trimming.

Q: How should I store my kitchen knives to ensure longevity? 

A: Use a knife block, magnetic knife strip, or blade guards. These storage methods prevent the blade from coming into contact with other utensils, ensuring it remains sharp and undamaged.

Q: Can I repair a chipped or broken knife, or should I replace it? 

A: Minor chips can often be repaired by professional sharpening. However, significant damage or breakage might warrant a replacement for safety and efficiency reasons.

Q: What are the signs of a low-quality kitchen knife? 

A: Signs include difficulty in sharpening, frequent dulling, uneven blade grinds, poor balance, and uncomfortable handles. A low-quality knife may also rust or discolor easily.

Q: How does the hardness of a knife’s steel affect its performance? 

A: Harder steel retains its edge longer but can be more brittle. Softer steel is more durable but may require frequent sharpening. The ideal hardness depends on the knife’s intended use and personal preference.

Q: What safety precautions should I take when using kitchen knives? 

A: Always use a stable cutting surface. Hold the knife securely, and keep your fingers tucked away. Store knives safely, away from children’s reach. Regularly maintain and sharpen your knives to ensure they function safely and efficiently


A good kitchen knife is indispensable for any cook, chef, or household kitchen. Unfortunately, knives wear out and will need to be replaced eventually unless you have a very high-quality knife.

Some kitchen knives may last a lifetime, but generally, you will go through several kitchen knives in your lifetime. It is important to know when it is time to retire your old kitchen knife and replace it with a new model!

TIP: Ceramic knives have become more and more popular in recent years. Is it hard to sharpen ceramic knives? Check out the complete guide on sharpening ceramic knives in the article below:
Step-By-Step Guide: How To Sharpen A Ceramic Knife