Misen nakiri knife with blue handle and stainless steel blade

5.5" Nakiri Knife (ACUTO440)

Blue
$94.00
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Misen nakiri knife with blue handle and stainless steel blade
  • Misen nakiri knife with blue handle and stainless steel blade
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  • Misen nakiri knife with blue handle and stainless steel blade
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  • Misen nakiri knife with stainless steel blade and black handle
  • Misen nakiri knife with blue handle and stainless steel blade
  • Misen chef's knife chopping colorful rainbow chard stems on wooden cutting board
  • Misen nakiri knife with blue handle and stainless steel blade
  • Misen santoku knife blade close-up with blue handle
  • Misen chef's knife slicing radicchio on wooden cutting board
  • Misen nakiri knife with stainless steel blade and black handle
5.5" Nakiri Knife (ACUTO440)

7 Reviews

5.5" Nakiri Knife (ACUTO440)

5.5" Nakiri Chopping Knife

$94.00

A knife for all the veg-heads, with a straight blade for clean, even chops, plus a wide surface for scooping all that goodness into the pot.

Color: Blue
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60-Day Test Drive

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Lifetime Warranty Against Defects

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Free Returns

Features
  • AICHI ACUTO440 Japanese steel for exceptional sharpness and edge retention
  • Lab-tested rust resistance proven to withstand 50 days submerged in water and up to 100 dishwasher cycles.
  • Straight-edge blade for full board contact and clean, consistent chopping
  • Gently curved tip for optional rock-chopping
  • Wide blade surface for easy scooping and transferring ingredients
Rust-proof feature icon with spark symbols

Rust-Proof

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ACUTO440 Steel

Up and down chopping motion technique icon

Up & Down Chop
Use & Care
  • Hand wash
  • Dry immediately after use
  • Sharpen every 4–6 months
  • Heads up: High-carbon knives may show discoloration after exposure to acidic foods and/or salt. This is purely cosmetic and different from rust, which is extremely rare.
  • Visit our Help Hub for more on how to use and care for this knife.

Let Us Handle the Sharpening
Specifications

Blade Length: 5.5 in. / 140 mm
Total Length: 10.43 in. / 265 mm
Handle Thickness: 16 mm
Blade Height: 50 mm
Weight: 0.34 lb / 155 g
Steel: AICHI ACUTO 440 (Japan)
HRC: 58±2
Grind & Edge: 50/50 Symmetrical, 14° per side
Handle Material: Polyoxymethylene
Country of Production: PRC
Warranty

All Misen products come with a lifetime warranty against defects. Misen will replace any defective products. Learn more about our warranty policy here and what's covered.

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Basically a Navy Seal

Rust-proof after 100 dishwasher cycles.

Because it’s got more chromium than standard high-carbon stainless, ACUTO440's rust resistance is a lab result, not a marketing claim.
Sliced salami and mozzarella sheet pan pizza on parchment paper being cut with a Misen chef's knife
Misen bread knife slicing dark sourdough loaf on wooden cutting board

Works Harder, Stays Sharper

Holds a razor edge through heavy prep.

At 58±2 HRC, ACUTO440 has incredible edge retention without brittleness. That means you can put off sharpening it for longer.

Questions?

What are Misen’s ACUTO440 Knives made of?

Our ACUTO440 Knives are made with AICHI ACUTO440, an exceptionally corrosion-resistant Japanese high-carbon stainless steel. AICHI ACUTO440 is rust-proof, incredibly durable, and has excellent edge retention. What that means for you: less time cleaning and sharpening, more cooking.
What’s the difference between Misen’s ACUTO440 Knives and classic knives?

All of our knives are made from high-carbon stainless steel, which is what gives them their razor-sharpness and excellent edge retention. However, our ACUTO440 Knives have a much higher chromium content (about 18%), which makes them significantly more corrosion (aka rust) resistant.

Our ACUTO440 Knives also feature a rounded spine and heel (the back of the knife where the blade meets the bolster), creating a more comfortable grip over long prep sessions.
How are Misen’s ACUTO440 Knives different from other high-carbon knives?

We wanted our ACUTO440 Knives to be high-performance tools that you could still leave in the sink overnight if you needed to. That’s why our ACUTO440 Knives are made with AICHI ACUTO440, a Japanese high-carbon stainless steel that is more durable and easier to care for than other high-carbon knives, which are prone to rusting and/or chipping without proper care.
What do you mean by rust-proof?

Our ACUTO440 Knives are made with AICHI ACUTO440 steel, an exceptionally corrosion-resistant Japanese high-carbon stainless steel. Our knives have been lab-certified to withstand up to 100 dishwasher cycles, as well as 50 days of being submerged in water, without showing any signs of rust.
Can I put Misen’s ACUTO440 Knives in the dishwasher?

While our ACUTO440 Knives have been lab-certified to withstand up to 100 dishwasher cycles without showing any signs of rust, we generally recommend hand washing all of your Misen knives. Because our knives are extremely sharp, when they get jostled around in the dishwasher, the blade can cut through the soft materials that make up your dishwasher racks. Dishwashing can also damage your knives if the blade edge bangs against hard objects like flatware or pots and pans during the washing cycle.
How often should I sharpen my knives?

Whenever you start to notice your knife is slicing and dicing a little less crisply than usual, it’s time to sharpen. Although our ACUTO440 Knives can go long periods between sharpenings, we generally recommend getting them sharpened about twice a year for best performance. We also recommend regularly using a honing rod between sharpenings to keep your knife edge in good shape.
My blade has discoloration and/or staining. What is this?

While our ACUTO440 Knives are rust-proof, all high-carbon knives can experience some discoloration and/or staining with prolonged exposure to acidic foods and/or salt. This is purely cosmetic and is not the same as rust. To remove discoloration, make a paste with baking soda and water. Apply the paste to the discolored spots, then use a soft microfiber cloth to gently rub the paste into the affected area to remove discoloration. Wash your knife with a soft sponge and warm soapy water, then dry right away. That's it.

Customer Reviews

4.7
Rated 4.7 out of 5 stars
Based on 7 reviews
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7 reviews
  • Melissa
    Reviewing
    5.5" Nakiri Knife (ACUTO440) - Blue
    Rated 3 out of 5 stars
    1 week ago
    Please make it in red!

    I want this knife but would love for it to match my other red knives.

    Was this helpful?
  • Thomas F.
    Verified Buyer
    Reviewing
    5.5" Nakiri Knife (ACUTO440) - Blue
    I recommend this product
    Rated 5 out of 5 stars
    2 weeks ago
    Great knife

    Works great for slicing/chopping. Holds its edge well. Convenient to pick up items that have been prepared.

    Was this helpful?
  • Donet S.
    Flag of United States
    Verified Buyer
    Reviewing
    5.5 inch Nakiri Knife - ACUTO440 - New
    I recommend this product
    Product Standouts sharp, easy-to-use, good balance, nice weight, sleek design
    Rated 5 out of 5 stars
    1 month ago
    Nice clean knife

    The Nakiri 5.5" knife is well balanced.Has a nice feel a comfortable weight.Works well and does the job in the kitchen.

    Was this helpful?
  • Pete C.
    Flag of United States
    Verified Buyer
    Reviewing
    5.5" Nakiri Knife (ACUTO440) - Blue
    I recommend this product
    Product Standouts good balance, sleek design, comfortable handle, nice weight, sharp
    Rated 5 out of 5 stars
    4 months ago
    Beautiful

    This is my second Misen knife, I've had the Utility Knife for 3 years and it's been the only thing I've used, and when I decided I wanted something a bit like a Chinese chef's knife or a santoku or nakiri for vegetable chopping, I saw that Misen had just come out with their spin on a nakiri, and its just as lovely as my Utility Knife.

    Just feels so good and nimble in the hand, so perfectly balanced and smooth, and I love the way they've designed this blade shape to be a bit closer to a santoku or cleaver than a traditional nakiri, sleek rounded contour. Beautiful knife

    Was this helpful?
  • Jeremiah A.
    Flag of United States
    Verified Buyer
    Reviewing
    5.5" Nakiri Knife (ACUTO440) - Blue
    I recommend this product
    Product Standouts sharp, easy-to-use
    Rated 5 out of 5 stars
    5 months ago
    Makes chopping veggies a breeze!

    Already had a chef’s knife from Misen, which I love. When I saw this announced I was quick to preorder and was not disappointed. The knife feels great in hand, looks stylish, and chops veggies with ease.

    Was this helpful?
Show More

5.5" Nakiri Chopping Knife

The Misen 5.5" Nakiri Knife (ACUTO440) is built for vegetable prep, especially when you want clean, even slices and fast pile-to-pot transfers. The thin, straight-edge profile is designed for full board contact, while the wide blade gives you a handy surface for scooping chopped ingredients into a pan or bowl.

If your day-to-day cutting is heavy on onions, herbs, carrots, and cabbage, a nakiri-style chopping knife can feel more efficient than a curved chef’s knife because the straight edge rewards a simple up-and-down motion. This one also includes a gently curved tip, so you can choose to rock-chop when it suits the ingredient. For more shapes and sizes across the lineup, browse the single knives selection.

The blade is made with AICHI ACUTO440 Japanese steel, chosen for sharpness and edge retention. Misen also notes lab-tested rust resistance, proven to withstand 50 days submerged in water and up to 100 dishwasher cycles, but everyday care still matters. For best results, hand wash, dry immediately after use, and plan to sharpen about every 4 to 6 months. (If you are comparing this to other kitchen shapes, the broader kitchen knives collection makes it easier to weigh options.)

Color choices (Blue or Black) are purely aesthetic based on what is shown on the page, with the same blade length (5.5 in / 140 mm) and overall dimensions. Specs worth considering for fit and feel include the 50 mm blade height for knuckle clearance, a 16 mm handle thickness, and a light 0.34 lb (155 g) weight that stays nimble during repetitive chopping.

High-carbon knives can show discoloration after exposure to acidic foods and or salt. Misen calls this cosmetic and different from rust, which is extremely rare for this steel. If you want the full do’s and don’ts for keeping the edge and finish in great shape, the Acuto knives care page covers use and care for this knife.

Explore Serrated Knives for more verified options related to this product.

Frequently Asked Questions About Nakiri Knives

What is this 5.5" nakiri knife best used for?

It is designed for vegetable prep, with a straight edge for clean, even chops and full board contact. The wide blade also helps with scooping and transferring ingredients after you cut, which is useful when moving piles of prep into a pot or pan.

Can I use a rocking motion with this nakiri?

Yes, when you want to. While nakiri knives are typically optimized for up-and-down chopping, this blade includes a gently curved tip that allows optional rock-chopping, giving you flexibility based on the ingredient and your cutting style.

Is this knife dishwasher safe?

Misen reports lab-tested rust resistance that withstood up to 100 dishwasher cycles, but the recommended care is still to hand wash and dry immediately after use. Following the suggested routine helps protect the edge and overall finish over time.

What should I do if the blade discolors after cutting acidic foods?

Misen notes that high-carbon knives may show discoloration after exposure to acidic foods and or salt. This is described as purely cosmetic and different from rust, which is extremely rare. Hand washing and drying promptly helps keep the blade looking its best.

How often should I sharpen it?

The use and care guidance on the page recommends sharpening every 4 to 6 months. The knife uses ACUTO440 Japanese steel for strong edge retention, but regular sharpening keeps the straight edge performing its best for clean vegetable chopping.