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Can Knives Go in the Dishwasher?

What a dishwasher does to an edge, which knives can survive it, and the 30-second hand-wash routine that keeps them sharp.

Updated November 11, 2026 · 3 min read

The short answer

Most knife makers recommend hand washing. In a dishwasher, edges bang against racks and other dishes, harsh detergent and long wet cycles can spot steel, and wooden handles crack. Cutco's thermo-resin handles are dishwasher safe, but hand washing and drying right away keeps any knife sharper, longer.

Why dishwashers are hard on knives

What about Cutco?

Cutco's thermo-resin handles are dishwasher safe and won't crack, chip or absorb moisture, so the dishwasher won't ruin a Cutco knife. Still, hand washing keeps the edge sharper. And if a knife does get damaged, the Forever Guarantee still has you covered.

How to hand wash a knife

  1. Wash it right after use with warm, soapy water and a soft sponge, wiping from spine to edge.
  2. Rinse and dry it immediately with a towel, again from the spine side.
  3. Put it straight back in the block or tray. Never leave knives soaking in a sink full of water.

Questions

Can you put knives in the dishwasher?

Most makers recommend hand washing; dishwashers dull edges and can damage handles.

Are Cutco knives dishwasher safe?

Cutco handles are dishwasher safe, but hand washing keeps the edge sharper longer.

Why do knives get spots after the dishwasher?

Long wet cycles and harsh detergent can spot or pit even stainless steel. Dry knives right away to prevent it.

Keep reading

Sources: Cutco: Anatomy of a Kitchen Knife · Cutco: Just the Facts