Research editor: Nicholas Bauer, Founder & Research Editor · Updated October 16, 2026
The quick answer
Handwash kitchen knives when their manufacturer recommends it; WÜSTHOF explicitly advises against dishwasher cleaning. Its guidance calls for prompt washing with mild soap, immediate drying and safe storage. A sharp blade also needs a deliberate handling routine at the sink.
Dishwasher-safe and recommended care can differ.
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| Manufacturer guidance | Dishwasher position | What it means for your knife |
|---|---|---|
| WÜSTHOF | Do not put knives in the dishwasher. | Handwash promptly with mild soap, dry immediately and store with the edge protected. |
| GLOBAL USA | Do not put GLOBAL knives in a dishwasher. | Its care guidance connects machine washing with damage and corrosion; follow its handwashing routine. |
| ZWILLING | Recommends handwashing. Its US care article describes special-formula steel as dishwasher-safe only at 55°C / 131°F or below; wooden handles are excluded. | Its general use-and-care leaflet recommends against machine washing. A conditional allowance is not a reason to choose a hot cycle or ignore the exact knife instructions. |
| Victorinox synthetic-handle kitchen knives | The brand calls these dishwasher-safe but recommends handwashing to protect blade and handle. | Do not extend the synthetic-handle allowance to wooden-handled knives. Check the exact product’s instructions. |
Sources: WÜSTHOF cleaning guide; GLOBAL USA care; ZWILLING US care article; ZWILLING care leaflet; Victorinox kitchen-knife cleaning guide.
A stainless blade and a plastic handle do not establish the care rule by themselves. Match the complete knife and keep ordinary kitchen-knife guidance separate from a folding pocketknife’s maintenance instructions.
Do not treat a chef’s knife like a dinner fork
A cooking knife has an edge you depend on and a handle that may use wood, rivets or other materials. WÜSTHOF warns that heat and contact with other objects in the dishwasher can damage knives. Loading one between plates is not a substitute for the recommended handwashing method.
Keep the knife visible while clearing up. A blade hidden under cloudy water or a pile of dishes creates an avoidable surprise for the next person using the sink.
A practical washing sequence
- Clear a stable work area and handle the knife deliberately, one at a time.
- Follow the maker’s gentle washing instructions. Avoid running a finger along the cutting edge to check for residue.
- Dry it promptly, keeping the sharp edge controlled.
- Return it to a suitable block, guarded storage position or drawer insert.
WÜSTHOF also discourages soaking and abrasive cleaning. Wooden handles may have separate maintenance instructions; do not apply oil to every handle without identifying its material.
If it has already been machine-washed
| What you notice | Next step |
|---|---|
| Visible corrosion or unusual marks | Use the maker’s guidance for that blade; avoid an improvised chemical bath. |
| A chipped edge or bent tip | Have the knife assessed before continued use or amateur repair. |
| A loose, cracked or swollen handle | Stop using it until the handle problem is resolved. |
| No obvious damage | Return to the recommended care routine rather than assuming every future cycle is harmless. |
Build storage into your knife purchase
A large block can be awkward on a small counter. A drawer insert or individual guard may suit the layout better, provided it fits the blades and keeps them safely separated. Measure the drawer’s usable interior and opening clearance before ordering an organizer.
Do not buy more knives than you can store and clean comfortably. If a set leaves loose blades mixed with everyday utensils, the apparent value of extra pieces may create a daily nuisance. Choose the pieces you use and give each a predictable place.
How this affects dishwasher capacity
When estimating your daily load, leave handwash knives out of the machine-washable count. Your countertop dishwasher can still handle approved plates, cups and cutlery while you clean the knife and any unsuitable cookware separately.
This division is especially useful in a shared kitchen. Agree on a visible handwash area and put the knife away promptly rather than leaving a vague note beside a crowded sink. Clear routines prevent someone from loading it simply to help tidy up.
Plan the rest of the load
Use our plate-size and loading guide for the machine-washable items. If you are choosing an appliance, compare the researched countertop dishwasher options after separating out anything that needs handwashing.
Common questions
Is stainless steel a reason to machine-wash a knife?
No. The complete knife and its edge need the maker’s care instructions; stainless describes the material, not an unconditional washing permission.
Can I leave the knife soaking while the dishwasher runs?
WÜSTHOF advises against soaking. Clean, dry and store it promptly instead.
Sources & scope
Manufacturer guidance informs the care rules; the kitchen-planning examples are our practical suggestions. Match the exact item and current instructions. We have not performed durability or cleaning tests on these products.
