Ninja warranty for knives & kitchen tools
The short version
Ninja doesn't cover everything, but keeps knives and neverdull sharpener covered for life. That full coverage is the same as most of the 60 brands we compared, which typically cover nothing in full. You don't need to register to get this coverage.
From Ninja's published warranty, checked October 2026.
What's covered
Full coverage: everything, parts and laborPartial coverage: some parts only, you usually pay labor
Purchase5 yrs10 yrs+Full: NonePartial: to lifetime
- Partial coverageKnivesA fee appliesLifetime
- Partial coverageNeverDull sharpenerA fee applies10 years
Good to know before you buy
- Chipped blades, broken tips and rust from poor cleaning are not covered.
- You pay about $21 to have the replacement shipped back.
- Original owner only; keep your receipt.
How other brands compare for knives & kitchen tools
- 1. Chicago Cutlery75/100 · Full: Lifetime
- 2. Cutco75/100 · Full: Lifetime
- 3. Dalstrong75/100 · Full: Lifetime
- 4. Farberware75/100 · Full: Lifetime
- 5. Lamson75/100 · Full: Lifetime
Where you buy it matters
How long stores give you to return it
Longest return window first, for knives & kitchen tools.
- CostcoMost itemsNo fixed deadline
- Sam's ClubMost itemsNo fixed deadline
- BJ's Wholesale ClubMost items365 days
- Kohl'sMost items90 days
- TargetMost items90 days
- WalmartMost items90 days
Show all 21 stores
- JCPenneyMost items60 days
- Ace HardwareMost items30 days
- Bloomingdale'sMost items30 days from delivery
- Crate & BarrelMost items30 days from delivery
- Dillard'sMost items30 days
- HomeGoodsMost items30 days
- KrogerMost items30 days
- Macy'sMost items30 days from delivery
- Ross Dress for LessMost items30 days
- Sur La TableMost items30 days from delivery
- WayfairMost items30 days from delivery
- World MarketMost items30 days
- BelkSoutheast storesMost items30 days
- Fry's Food & DrugArizona storesMost items30 days
- Nebraska Furniture MartMidwest and Texas storesMost items30 days
From each store's published return policy, using its rule for knives & kitchen tools where it has one. Member and holiday extensions aren't counted. Check yours before you buy.
Other things Ninja makes
- Air Fryers & Multicookers10/100Full: None. No partial coverage.
- Blenders & Mixers32/100Full: 2 years. No partial coverage.
- Cookware & Bakeware23/100Full: None. Partial to 5 years.
- Smokers & Pellet Grills13/100Full: None. Partial to 1 year.
Work at Ninja and see something out of date? Send us the current terms and we'll check and update this page.Suggest a correction
I-BUY.AI isn't paid by any brand, and ratings can't be bought. How we rate warranties