Chef knife and cleaver in a kitchen sink

Knife Education

Are Your Kitchen Knives Dishwasher Safe?

by Adam Dodd on Nov 20, 2021

Some chef knives and general cooking knives are advertised as dishwasher safe. These are often made with stainless steel and may have an all-metal construction, such as some Global knives.

However, we recommend washing kitchen knives by hand whenever possible. Here's why.

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Why You Shouldn't Put Chef Knives in the Dishwasher

1. Dishwasher Chemicals Can Cause Corrosion

Dishwasher detergents can be harsh on knife blades and may contribute to rust or corrosion over time.

2. The Blade Can Be Damaged

Inside a dishwasher, knives can rub against other utensils during the cycle. This can damage or dull the knife's cutting edge.

3. Moisture Can Cause Rust

Some dishwashers don't completely dry their contents. Water left on a knife for an extended period can contribute to rust spots.

4. Heat Can Damage Knife Handles

Natural wood handles can lose the oils that help protect the material, potentially causing the wood to dry out or crack.

Composite handles such as Pakkawood can also show signs of damage from repeated exposure to high temperatures.

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How to Clean Chef Knives Safely

The best way to clean your knives is by hand:

Wash the knife with mild detergent and warm water.
Use a soft cloth or sponge rather than an abrasive scourer.
Avoid abrasive pads on highly polished blades to prevent scratches.
Dry the knife thoroughly with a soft cloth.
Always handle the blade carefully while washing and drying.

Never leave a knife soaking in water or sitting wet for an extended period.

Final Thoughts

Even when a knife is advertised as dishwasher safe, hand washing is generally the better choice for maintaining the blade and handle over time.

A few extra seconds of careful hand washing can help keep your kitchen knives clean, sharp and looking their best.

Tags: blog, Dishwasher safe, knives

Are Your Kitchen Knives Dishwasher Safe?

Why You Shouldn't Put Chef Knives in the Dishwasher