The santoku and the chef knife are both sold as the do-everything kitchen blade. They are not the same knife. The chef knife is a curved-belly European design built for the rocking cut. The santoku is a flatter-bellied Japanese design built for the push cut. Picking the right one is partly a matter of cutting style and partly a matter of cooking habit. This guide compares the two on profile, motion, weight, ideal tasks, and the practical case for owning each.
Blade profile and length
A chef knife typically runs 8 to 10 inches with a curved belly that rises gradually from heel to tip. The belly curve is the design feature that supports the rocking cut: the heel pivots on the board while the tip stays low, and the curve sweeps through the food. The classic European chef knife (German style: Wusthof, Henckels) has a more pronounced curve; the French chef knife profile (Sabatier-style) is flatter; the Japanese gyuto sits between the two.
A santoku typically runs 5 to 7 inches with a much flatter belly and a sheepsfoot tip (the spine drops sharply to meet the edge near the tip rather than tapering to a point). The flat profile keeps the entire edge in contact with the board on a downward cut. The dropped tip means there is no fine-point work like deboning, but the blade can be used as a scoop to transfer food from board to pan without flipping.
Side by side: an 8 inch chef knife and a 7 inch santoku look like different tools, not just smaller and larger versions of the same idea. The chef knife is narrower and longer with a clear belly; the santoku is taller (more knuckle clearance) and flatter.
Cutting motion
The chef knife is designed for two main motions. The rocking cut keeps the tip on the board, pivots the heel down, and uses the belly curve to slice through ingredients with a back-and-forth motion of the hand. This is the standard American knife technique taught in most home-cook resources. The push cut lifts the entire blade off the board, pushes forward through the food, and lifts again, useful for harder ingredients and faster work.
The santoku is designed for the push cut and the tap chop. The push cut uses the flat belly to make even slices with a downward-forward motion. The tap chop, common in Japanese kitchens, lifts the blade about an inch and chops straight down in quick repetitions, useful for herb mincing and small dice. The rocking cut works poorly on a santoku because the flat belly does not roll through the food the way a chef knife’s curve does.
If you learned to cut by watching American cooking shows, you probably rock cut. If you learned by watching Japanese cooking shows or working in a Japanese kitchen, you probably push cut. Pick the knife shape that matches the motion.
Weight and balance
A typical European 8 inch forged chef knife weighs 230 to 260 grams (8 to 9 ounces). The weight comes from the bolster and tang, and the balance sits at or just behind the heel. The knife feels planted on the board.
A typical Japanese 7 inch santoku weighs 140 to 180 grams (5 to 6.4 ounces), about 30 to 40 percent lighter than a European chef knife. The balance sits further forward, on the blade itself, and the knife feels quick and agile. Lighter-weight Japanese chef knives (gyutos) sit between the two extremes.
For long prep sessions, a heavier chef knife is less tiring on the cook’s arm if you let gravity do most of the work, and more tiring if you fight the weight. A lighter santoku is faster but offers less authority on hard root vegetables, where the extra weight of a chef knife helps power through. The difference is real but adjusts to within a few cooking sessions.
Edge angle and steel hardness
European chef knives are typically ground at 20 degrees per side (40 degrees inclusive) and hardened to 56 to 58 HRC. The angle is sturdier and more forgiving of rough handling; the softer steel resists chipping when the edge hits a bone or a hard cutting board.
Japanese santokus are typically ground at 15 degrees per side (30 degrees inclusive) and hardened to 58 to 62 HRC depending on the maker. The thinner edge slices with less resistance, particularly through dense vegetables, and takes a finer apex than European steel. The harder steel holds the edge longer but is more brittle and less forgiving.
The thinner santoku edge means the knife glides through cucumbers, sweet potatoes, and large onions with less drag. The chef knife requires slightly more effort but tolerates the cook hitting a hidden chicken bone or scraping the edge across the board to gather diced onion (which a santoku should never do, since the harder steel chips).
Ideal tasks for each
The chef knife is the right tool for:
- Breaking down a whole chicken
- Splitting a butternut squash
- Slicing brisket, pork shoulder, or a roast
- Rocking-cut herb chiffonade
- Big-volume mirepoix
- Any task that benefits from blade length over 8 inches
The santoku is the right tool for:
- Dicing onions with the push cut
- Slicing chicken breast or boneless meat into uniform pieces
- Cutting sushi-style fish slices at home
- Mincing herbs with the tap chop
- Slicing waxy potatoes and sweet potatoes (especially with kullenschliff dimples)
- Any task on a smaller cutting board where 7 inches feels right
The overlap is large. Both knives handle 80 percent of home cooking well. The chef knife extends further into the heavy-prep and long-blade territory; the santoku extends further into the quick, precise, vegetable-forward territory.
Knuckle clearance and board interaction
A santoku is taller from spine to edge than most chef knives, which gives more knuckle clearance above the cutting board. For cooks who hit their knuckles on the board with a chef knife (often a sign of grip or angle issues, but real nonetheless), the santoku is more forgiving.
A chef knife has more total blade in contact with the board on a downstroke, which is useful for big sweeping cuts of vegetables. The santoku’s flat profile keeps the whole edge in contact during the push cut, which is also useful, but the shorter length means each pass cuts less food.
The cutting board recommendation differs too. The thinner-edged santoku rewards an end-grain wood board or a softer plastic; hard plastic or bamboo boards accelerate dulling. The chef knife is more forgiving on board surface.
For more on cutting technique and grip, see our knife grip techniques guide and our methodology page.
Buying one or both
For a home cook buying their first quality knife: chef knife. The longer blade and curved belly handle more tasks than the santoku, including everything the santoku does plus the long-blade and break-down jobs. An 8 inch European chef knife or an 8 inch gyuto is the standard first pick.
For a home cook adding a second knife to a kitchen that already has a chef knife: santoku is a strong choice. It complements the chef knife by being lighter, faster, and better at vegetable-forward push-cut work. The 7 inch santoku and the 8 inch chef knife together cover essentially all home cooking tasks.
For a home cook who mostly cooks Japanese, Korean, or Chinese home cuisine: santoku first. The cooking style favors push cuts, tap chops, and vegetable-forward prep, which is exactly what the santoku is built for.
The two knives are not interchangeable but they are complementary. Neither is wrong; the question is which cutting motion feels like home, and which sits naturally in your hand. Try both at a kitchen store before buying if you can, and the choice will be obvious.
Frequently asked questions
If I can only own one knife, should it be a santoku or a chef knife?+
A chef knife. It is the more versatile shape because the curved belly supports both push cuts and rocking cuts, and the longer blade handles bigger tasks like slicing a brisket or splitting a butternut squash. A santoku is excellent at what it does (push-cut vegetables, slice boneless meat, mince herbs), but its short length and flat profile make some tasks awkward. If a second knife enters the kitchen, a santoku is a strong companion to a chef knife. Going the other direction (santoku first, chef knife later) leaves a gap during the months when one knife handles everything.
Why do santoku knives have those little dimples along the blade?+
The dimples (called kullenschliff or granton edge) create small air pockets between the blade and the food, which reduces suction and helps thin slices of starchy food like potatoes release from the blade. The effect is real but small. The dimples do not make the knife sharper, do not extend edge life, and do not affect anything except slice release on sticky foods. Most santokus include them by tradition and aesthetic. A santoku without dimples cuts just as well; a santoku with dimples is slightly easier when slicing waxy potatoes or sweet potatoes.
What does santoku actually mean and why is it called the three-virtues knife?+
Santoku translates roughly to three virtues or three uses, referring to its ability to handle the three main Japanese home-cooking tasks: cutting fish, cutting meat, and cutting vegetables. It was developed in mid-twentieth century Japan as a Western-influenced replacement for older single-purpose Japanese kitchen knives, which is why it is sometimes called the Japanese chef knife. Despite the name, the design is a Japanese reinterpretation of the European chef knife, not a translation of an ancient pattern.
Is a 7 inch santoku enough or should I get a longer one?+
Seven inches is the standard santoku length and works for most home tasks. The blade is long enough to slice a chicken breast in one pass and short enough to control on a small board. Some manufacturers offer 5 inch petite santokus (closer to a utility knife) and 8 inch large santokus (closer to a gyuto). The 7 inch is the right starting point. If your hands are smaller or your cutting board is under 12 inches deep, a 6 inch santoku is also reasonable; an 8 inch santoku starts to overlap with a chef knife and the practical case for owning both shrinks.
Can I rock chop with a santoku the way I do with a chef knife?+
You can, but it does not work as well, because the santoku has a flatter belly and the heel does not stay on the board through the rock motion. The traditional santoku cut is a push cut: lift the entire blade, place the tip down, push down and forward in one motion, then lift. The technique looks different than the rocking cut familiar to American home cooks who learned on European chef knives, but it is fast and efficient once practiced. If you strongly prefer the rocking motion, pick a chef knife or a gyuto with more belly curve.
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Jamie Rodriguez
Jamie Rodriguez writes for The Tested Hub.