Can Japanese Knives Go in the Dishwasher?
Sep 27, 2026
For most Japanese kitchen knives, hand washing is the safer choice. A dishwasher exposes the knife to hot water, detergent, prolonged moisture and movement against other items, all of which can be harder on the blade, edge and handle than simple hand washing.
Why the edge is at risk
A fine edge can strike cutlery, racks or cookware during a cycle. That impact can dull or chip the edge even if the steel itself tolerates the detergent.
Why carbon steel should stay out
Reactive carbon steels can rust or discolor quickly when left wet. The long wet cycle is the opposite of the normal care routine: wash, rinse and dry promptly.
What about stainless steel?
Stainless steel is more corrosion resistant, but the edge can still be damaged mechanically and the handle can still suffer. Stainless does not make a knife dishwasher-proof by default.
Wooden handles
Repeated hot soaking and detergent can dry, swell, shrink or otherwise age natural wood. Even composite or synthetic handles may use adhesives or construction methods not intended for repeated dishwasher cycles.
The simplest routine
- Wash the knife by hand after use.
- Use a soft sponge or cloth.
- Rinse.
- Dry blade and handle immediately.
- Store only when fully dry.
For the full routine, see the Japanese Knife Care Guide.
