Table of Contents
- What is a chef's knife and what is it really used for?
- The slicing knife: definition, shape and precise uses
- Key differences: blade shape, weight and balance
- Cutting techniques in the kitchen: rocking, chopping and mincing
- Kitchen knife care: preserving the sharpness over the years
- Professional knife sharpening: steel rod, sharpening stone and best practices
- How to choose between a slicing knife and a chef's knife?
- Conclusion
- Frequently Asked Questions
Last updated: September 23, 2026
What is a chef's knife and what is it really used for?
The chef's knife is the cornerstone of any kitchen. Its wide, curved blade is used to slice, chop, mince and slice the majority of foods.
Its shape is no accident. The rounded belly allows for a natural rocking motion. The tip is used for finishing touches. The heel, near the handle, breaks bones and hard foods.
A true chef's knife generally has a 20 cm blade for versatile use. 15 cm models are suitable for smaller hands or limited spaces.
This guide helps you understand the difference between a slicing knife and a chef's knife. You will finally know which one to take out for each task.
The slicing knife: definition, shape and precise uses
The slicing knife is a knife with a narrow and rigid blade, designed to cut cleanly without crushing. Its blade height reduces friction, which produces even slices.
Its blade often measures 20 to 25 cm, sometimes more. It is thinner than that of a chef's knife. The spine remains straight, without a marked curve.
What is it really used for?
- Slicing roasts and cooked meats
- Cutting thin slices of salmon or ham
- Slicing vegetables into even strips
- Cutting cakes and bread without crushing them
The slicing knife is not suitable for chopping. Its rigid blade does not support the rocking motion. It works back and forth, not by rocking.
Key differences: blade shape, weight and balance
Shape first separates the two knives. The chef's knife has a wide and curved blade. The slicing knife has a high but straight and narrow blade.
Weight then plays a decisive role.
Center of gravity: the point most guides forget
Take a chef's knife by the handle, place your index finger just in front of the bolster, and look for the point where the blade remains horizontal without you forcing it. This point is the center of gravity. On a well-designed chef's knife, it falls at the junction between the handle and the heel. On a slicing knife, it often recedes two to three centimeters toward the handle.
- With a chef's knife, the rocking motion happens around the center of gravity placed forward. The weight of the blade works for you: you lift the heel, gravity makes it fall back. The wrist guides, it does not carry.
- With a slicing knife, the motion is a horizontal back and forth. If the center of gravity is too far forward, you pull the blade instead of letting it slide. The wrist constantly compensates, and fatigue arrives after a few minutes on a large piece of meat.
How to test the balance in a store
Three checks are enough, without equipment:
- Place your index finger flat under the bolster, blade facing up. The knife should remain stable, without pointing either toward the tip or the handle.
- Make an imaginary rocking motion, tip resting on the palm. You should feel the blade roll without the handle slipping from you.
- Grip the handle as if in a real kitchen. If you have to tense your fingers to hold the blade in the air, the balance is backward.
Blade length: which size for which use?
Blade length depends on the task. Here is a simple guide:
| Knife type | Common length | Main use |
|---|---|---|
| Chef's knife | 15 to 20 cm | Chopping, mincing, slicing |
| Slicing knife | 20 to 25 cm | Clean slicing, fine slicing |
| Utility knife | 12 to 15 cm | Small tasks, fruit |
Bevel and cutting angle: what changes on a daily basis
The bevel is the sharpened part of the blade. It determines the cutting angle.
Japanese knife | Ultra-sharp →
Cutting techniques in the kitchen: rocking, chopping and mincing
Cutting techniques in the kitchen follow the shape of the knife. Each blade has its motion.
Kitchen knife care: preserving the sharpness over the years
Kitchen knife care extends the life of your blade. Three steps are enough.
Professional knife sharpening: steel rod, sharpening stone and best practices
Professional knife sharpening relies on two distinct tools. The steel rod straightens. The sharpening stone removes material.
Why the sharpening angle is not the same for the two blades
A chef's knife and a slicing knife do not work the same way. The first takes vertical blows and repeated rocking. The second slides back and forth on long fibers. The edge angle must therefore follow the actual constraint.
- Chef's knife: 15 to 20° per side. This more open angle resists repeated contact with the board and the micro-shocks of chopping. It cuts a little less finely, but holds the pace.
- Slicing knife: 10 to 15° per side. The more closed angle produces a thinner blade, which slides into the meat or fish without tearing them. In return, the edge is more fragile: contact with a bone or a glass board damages it quickly.
- Japanese knife (Santoku, gyuto): 10 to 15° per side, often 15° asymmetrical. The harder steel accepts a closed angle, but does not tolerate a hard metal steel rod well. Reserve the water stone for it.
The protocol by blade type
Chef's knife (standard stainless steel)
- Steel rod: one or two passes per side before each use, at 15-20°.
- Stone: 1000 grit every 6 to 8 weeks for daily use, then 3000-6000 grit for polishing.
- Frequency: a full sharpening every 2 to 3 months is enough if the steel rod is used regularly.
Slicing knife
- Steel rod: gentle passes, at 10-15°, without pressing. A too aggressive steel rod straightens the edge beyond the desired angle and weakens it.
- Stone: 1000 to 3000 grit, more rarely than a chef's knife. The closed angle wears out less in back and forth than in chopping.
- Frequency: one stone session every 3 to 4 months for regular use.
Japanese knife with hard blade
- Never use a hard metal steel rod: it chips an edge at 10-15°.
- Water stone only, 1000 grit then 6000, with a respected soaking time.
- Frequency: according to wear, often less than once a quarter if the blade is not forced.
The mistakes that damage the edge faster than a bad angle
- Inconsistent angle. One stroke at 20°, one at 12°: the edge becomes irregular and loses its bite. Better an angle a little too open but constant than a perfect angle held randomly.
- Too much pressure on the steel rod. The steel rod straightens, it does not remove material. Pressing chips the edge instead of realigning it.
- Too frequent sharpening on the stone. Each pass removes steel. An edge sharpened every week on the stone wears out faster than an edge maintained with the steel rod and sharpened on the stone every two months.
- Unsuitable board. Glass and stone dull any angle in a few cuts. Soft wood and food-grade plastic preserve the edge, whatever the knife.
A professional sharpener simplifies this work. It fixes the angle and avoids hand errors. However, check that it offers several angle settings: a device locked at 20° is not suitable for a slicing knife intended for fish.
How to choose between a slicing knife and a chef's knife?
For maintenance, our range of professional sharpeners restores sharpness. You keep a clean cutting edge, season after season.
Conclusion
Choosing between a slicing knife and a chef's knife is nothing complicated once the difference is understood. One chops and minces, the other slices cleanly.
Frequently Asked Questions
What is the main difference between a chef's knife and a slicing knife?
The chef's knife has a wide blade of 20 to 25 cm, curved, designed for rocking and chopping. The slicing knife has a narrower blade, often 15 to 18 cm, with a straighter edge. This straight shape allows clean and even cuts on vegetables, herbs and delicate meats, without crushing the food. The first is versatile, the second is specialized in precision.
Can you use a slicing knife to cut meat?
A slicing knife can slice tender cooked meats, like a cooled roast or cooked chicken, thanks to its thin blade. However, it is not suitable for thick raw meats or bones: the narrow blade lacks power and risks being damaged. For these tasks, a chef's knife offers more weight and control in the cut.
How should you care for your kitchen knives to keep them sharp?
Wash your knives by hand with a little dish soap, then dry them immediately to prevent moisture marks on the steel. Store them on a magnetic holder or in a knife block, never loose in a drawer. Use a honing rod every two to three uses to realign the edge, and plan for a full sharpening two to three times a year depending on how often you use them.
Is a slicing knife essential in the kitchen?
No, but it makes many tasks much easier. If you regularly cook vegetables, fresh herbs, or fish, a slicing knife provides a level of precision that is difficult to achieve with a chef's knife alone. For occasional weekend use, a good versatile chef's knife is often enough. Together, the two cover almost all daily food preparation.
