Ninja StaySharp Knives | Ninja Kitchenware

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Refurbished Ninja Knives

Refurbished products, also known as reconditioned, are items that have been previously sold by SharkNinja before being returned and restored.

Ninja Foodi StaySharp Knife Block Integrated Sharpener 6-Piece Set Cyber Space K32006UKCYD | Refurbished

£179.99

Ninja Knives & Knife Sets

Get more from your kitchenware with Ninja Knife Sets —perfect for both experienced chefs and newcomers alike. Discover durable, precision kitchen knives, at-home sharpening solutions, and more.

StaySharp Knife Sets

Starts sharp, stays sharp. Maintain incredible sharpness at home with an integrated knife sharpener built into the storage knife block. Simply lock the blade into the sharpener and restore its edge with a few swipes of the lever. (Selected products only)

Durable Stainless Steel

Built to last from forged German stainless steel with durable double-rivet construction, Ninja knives are rust-resistant and strong enough to tackle all your kitchen cutting tasks.

Precision Blades

Ninja’s precision blades make chopping, slicing, and dicing easy and effortless. Release your inner chef to seamlessly slice through the toughest ingredients and tackle delicate food prep tasks with ease.

Chef-Approved Handles

Designed to give you total control and maximum comfort, even with extended use, Ninja knives’ ergonomic handles are perfect for experienced chefs and kitchen newcomers alike.

Ninja Foodi StaySharp Steak Knives

Crafted from durable forged stainless steel with precision non-serrated blades, these steak knives add luxury to any table. Use them with the Ninja Foodi StaySharp Knife System's built-in sharpener (sold separately) to maintain a perfect edge for every meal.

Sharp for 10 Years

Ninja's premium knives stay sharp for 10 years. Sharpen every 2 weeks for optimum results. (Selected products only)

Sharp Choices Made Simple

Compare knife blocks and choose the right fit for your kitchen.

StaySharp Knife Block Set with Integrated Sharpener

6 piece set

£179.99
5 Prep Knives & Scissors
Built-in Sharpener
Traditional Double-Rivet Handle
-
Available in: Charcoal
CyberSpace
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StaySharp Knife Block Set with Integrated Sharpener

6 piece set

£199.99
5 Prep Knives & Scissors
Built-in Sharpener
Stainless Steel Handles
-
Available in: Black
White
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StaySharp Knife Block Set with Integrated Sharpener

14 piece set

£299.99
6 Prep Knives & Scissors
Built-in Sharpener
Traditional Double-Rivet Handle
6 Steak Knives
Available in: Charcoal
CyberSpace
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StaySharp Knife Block Set with Integrated Sharpener

14 piece set

£289.99
6 Prep Knives & Scissors
Built-in Sharpener
Stainless Steel Handles
6 Steak Knives
Available in: Charcoal
Shop Now

StaySharp Knife Block Set with Removable Sharpener

13 piece set

£299.99
4 Prep Knives & Scissors
Removable Sharpener
Traditional Double-Rivet Handles
6 Steak Knives
Available in: Stone Gold
Grey & White
CyberSpace
Black
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Looking for parts and accessories?

From StaySharp Knife Blocks to the Ninja Magnetic Bamboo Chopping Board, browse and buy our accessories—perfect for cutting-edge chefs and newcomers looking to sharpen their skills.

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Need help with your Ninja Knives?

Troubleshooting tips, answers to frequently asked questions, product manuals and more.

Knives Support

Knives FAQs

How do you sharpen Ninja knives?

The StaySharp Knife Block conveniently features an integrated knife sharpener to maintain incredible blade sharpness at home. Simply slide the lever to the bottom of the knife block, then insert a clean Ninja knife into the designated sharpening slot. Hold the knife in place and slide the lever all the way up and down 10 times. Rinse and dry the knife thoroughly before using.

What are the different knives used for?

8” Chef Knife – Chopping, slicing, mincing and dicing meat, vegetables, nuts, herbs and more
8” Slicing Knife – Precisely cutting thinner slices, larger vegetables such as cauliflowers, larger fruits such as melons, and carving hot and cold roasted meats
8” Bread Knife – Slicing crusty loaves, fresh sourdough, and other bread – also great for cutting through tomatoes and citrus fruits (Do not use the sharpener on knives with serrated edges.)
5” Utility Knife – Thinner slicing and filleting, preparing fish, butterflying chicken breasts, trimming vegetables, and finely chopping fruit
3.5” Paring Knife – Intricate tasks such as trimming fat, chopping small vegetables and fruit
Scissors – Snipping herbs, opening packaging and a wide variety of kitchen tasks (Do not use the sharpener on scissors.)

How do you dispose of old kitchen knives?

Treating yourself to a set of Ninja knives? It’s important to dispose of old kitchen knives carefully to avoid injury to yourself or anyone else who may come into contact with them. Check whether your local recycling centre can take them. If they are in good condition, you could donate or sell them. If you are disposing of them, wrap the blade heavily with cardboard, bubble wrap or paper (pop a cork on the knife tip if possible) then use tape to secure the wrapping. Place the knife into a sturdy container and label as SHARP. You can now place the container into your household waste bin.

How do you store knives in a drawer?

Knives must be stored in a safe place, protecting the cutting edge and preventing injury. The Ninja knife block is recommended for easy-to-access storage on the worktop, and for keeping you and your knives safe.

Free Next Day Delivery (over £30)

7 Days a Week* Terms Apply. Learn more

Up to 10-Year Guarantee*

Confidence in our design and quality. Learn more

Pay-in-3

Shop now, pay later with Klarna. Learn more

30-day Returns

Free returns on main units. Learn more

Ninja kitchen knife sets are designed to give home chefs the precision, durability, and versatility they need for everyday cooking. From 10-piece to 17-piece options, these may include essentials like chef’s knives, bread knives, and boning knives, along with additional steak knives for family meals. Some sets even feature built-in sharpeners to keep blades performing at their best whether you’re prepping vegetables, slicing proteins, or serving guests.