Single-Bevel vs Double-Bevel Japanese Knives
The bevel is the ground surface that runs from the flat of the blade down to the cutting edge. A knife can have that bevel on both faces or on just one, and the choice changes how the knife cuts, how you sharpen it, and whether it works for your hand. This guide explains the difference and who each grind is for.
The short answer
For a home kitchen, choose double-bevel, in almost every case. It is symmetrical, so it works for either hand, it is straightforward to sharpen, and it does not push food to one side as you cut.
Single-bevel knives are a professional’s tools for specific jobs: breaking down whole fish with a deba, slicing sashimi with a yanagiba, fine vegetable work with an usuba. They cut beautifully in trained hands, and they take weeks to months to use well.
How each grind works
A double-bevel edge is ground on both faces, meeting in the middle like a shallow V. The two sides are usually symmetrical, so the edge sits on the centreline of the blade. This is how nearly every Western knife and every modern Japanese home knife is made.
A single-bevel edge has the entire bevel on one face, often the right side for a right-handed knife. The other face, called the back or ura, is not perfectly flat: it is ground with a very shallow hollow, leaving a raised rim around the perimeter. That hollow, the urasuki, means only a thin band of steel touches the stone when you flatten the back, which keeps the reference face true without removing much metal. Because all the sharpening angle is on one side, the edge sits off to one side of the blade rather than in the centre.
That asymmetry is the whole story. Everything a single-bevel knife does well, and everything it asks of you, comes from having a flat reference face on one side and all the grind on the other.
What single-bevel does better
- It glides along a flat surface. The flat back sits against a fish’s backbone or the cutting board, so the blade can separate a fillet or shave a vegetable in one smooth, controlled motion.
- It takes an extremely thin, precise cut. The geometry supports the edge from one side, which lets a skilled cook peel a vegetable into a single paper-thin sheet, the technique called katsuramuki, on an usuba.
- It leaves a cleaner cut face. For sashimi, where the appearance of the cut surface matters, a yanagiba’s single bevel produces a smoother face than a double-bevel slicer.
- It releases food more cleanly. The flat back does not grip a slice the way two angled faces can, so thin cuts fall away rather than sticking to the blade. The usuba relies on this for sheet-thin vegetable work.
These are real advantages for the tasks they are built for. They are also narrow: none of them matters for chopping an onion or slicing a tomato, and a good double-bevel knife handles those better because it goes straight rather than steering.
What it costs you
- Handedness. A single-bevel knife is ground for one hand. A right-handed deba actively works against a left-handed cook: it steers the wrong way and is awkward to control. Left-handed versions exist but usually cost more, and often have to be special-ordered.
- Food steering. The asymmetric edge pushes food toward the flat side as you cut. You learn to compensate with your grip and angle, but it is a habit you have to build.
- Maintenance. The flat back has to be kept true. You lightly flatten it on a stone from time to time, a step called uraoshi, or the knife stops sitting flush against the bone or board.
- The learning curve. Sharpening a single-bevel knife is mostly done on one face at a consistent angle, with only a light pass on the back. It takes practice to do well, and a mistake is more visible than on a forgiving double bevel.
Which knives are which
| Grind | Typical knives |
|---|---|
| Single-bevel | Deba, yanagiba, usuba, and other traditional professional shapes |
| Double-bevel | Santoku, gyuto, nakiri, bunka, petty, and nearly all modern home knives |
If you own a santoku or a gyuto, it is double-bevel. Single-bevel knives are a deliberate, task-specific purchase, not something you end up with by accident.
If you are left-handed
This is worth calling out on its own, because it is the single biggest practical reason to avoid single-bevel knives. A double-bevel knife is symmetrical, so a left-handed cook picks one up and uses it exactly like anyone else. A single-bevel knife is ground for a specific hand. Use a right-handed deba left-handed and the blade steers away from your cut, the flat back no longer sits against the bone the way it should, and control is genuinely difficult.
Left-handed single-bevel knives are made, as a mirror image of the standard grind, but they typically cost 20 to 50 per cent more, are harder to find in stock, and often have to be special-ordered with a wait. Unless you are committed to single-bevel technique, a left-handed cook is far better served by staying with double-bevel knives. Our guide to left-handed Japanese knives covers the whole question, handles included.
The asymmetric double bevel
There is a middle ground. Many double-bevel Japanese knives are ground asymmetrically, such as 70/30 or 60/40, meaning more of the bevel is on one side than the other. This gives a little of the single-bevel slicing character, a cleaner release and a slightly finer cut, while keeping the knife usable in either hand and easy to sharpen.
Most asymmetric grinds favour the right side, on the assumption of a right-handed cook, but the difference is small enough that a left-handed cook can use one without trouble, unlike a true single bevel. Some makers offer a 50/50 option or will regrind to order. When you sharpen an asymmetric knife you can either keep the ratio or gradually even it out to 50/50 over time; both are fine.
The petty below is an example, with a 70/30 grind. In practice most cooks never notice the asymmetry; it just cuts well.
Chubo Inox Petty 150mm
USD 99 (checked Sep 8, 2026)
- Hand-finished in Seki, an easy-care stainless steel for everyday use
- Thin blade profile — about 1.7mm at the spine tapering to 0.5mm at the tip — for light, precise cuts
- Simple to maintain, a good fit for cooks new to Japanese knives
Which should you choose?
For general home cooking, double-bevel, without hesitation. It suits either hand, sharpens simply, and does everything a home kitchen needs.
Consider a single-bevel knife only when you specifically want a deba for breaking down whole fish or a yanagiba for sashimi, and you are ready to spend time learning it. If you are left-handed, the double-bevel path is far less friction: you can use any double-bevel knife straight away, where a single-bevel one means paying more and ordering carefully. Our guide to choosing a first Japanese knife assumes double-bevel for exactly these reasons.
Frequently asked questions
Is a single-bevel knife better?
Better only for the specific jobs it is built for, such as filleting whole fish or slicing sashimi, and only in trained hands. For everyday chopping and slicing, a double-bevel knife is easier and just as effective.
Can left-handed people use single-bevel knives?
Yes, but you need a left-handed version, which is ground as a mirror image. A right-handed single-bevel knife steers against a left-handed cook and is hard to control. Left-handed models usually cost more and may need to be special-ordered.
Why are single-bevel knives harder to sharpen?
You sharpen almost entirely on one face at a consistent angle, then take only a light pass on the flat back to remove the burr. Keeping that back perfectly flat, and holding one angle on the bevel face, takes practice that a symmetrical double bevel does not demand.
What knives are single-bevel?
Traditional Japanese professional knives: the deba for fish butchery, the yanagiba for slicing, and the usuba for vegetables. Home knives such as the santoku, gyuto, and nakiri are double-bevel.
The short version
A double-bevel knife is ground like a symmetrical V and suits any hand and any everyday task. A single-bevel knife puts the whole bevel on one face and a flat back on the other, which lets it make exceptional cuts for fish and fine vegetable work but makes it handed, harder to sharpen, and slower to learn. For a home kitchen, and for any left-handed cook, double-bevel is the answer. Reach for single-bevel only when a deba or a yanagiba is the specific tool you want.