Petty Knife: The Japanese Utility and Paring Knife

The petty (ペティ, from the French “petit”) is the Japanese small utility knife. Its name is written in katakana because it is a Western import, adopted alongside the gyuto when Japanese cooks took up Western cuisine. In a Japanese kitchen it plays the role of both paring knife and utility knife, and it is the usual partner to a gyuto.

Blade shape and geometry

A petty looks like a scaled-down gyuto. It has a pointed tip, a gentle curve toward the front, and a narrow blade, usually 25 to 32mm tall. The grind is thin, and hardness is in the same HRC 60-plus range as larger Japanese knives.

The narrow height is what separates it from a small santoku. It keeps the tip nimble for detail work and lets you hold the knife in your hand and cut toward your thumb, the way you would with a paring knife.

What it is for, and what it is bad at

A petty is the knife for the small stuff. Mincing a shallot, slicing garlic, supreming citrus, hulling strawberries, trimming fat and silver skin from a tenderloin, cutting herbs, peeling an apple. Line cooks often use a 150mm petty as their main tool for garnish work.

It is bad at big food. A cabbage, a butternut squash, or a whole chicken is too much for a 120mm blade. The narrow height also means no knuckle clearance for chopping on a board for long. And although it looks like a boning knife, a thin petty should not be pushed through joints. That is the honesuki’s job.

Common lengths and which to choose

If you want one petty, buy 120mm. If you already own a good paring knife, go to 150mm so the petty fills a different role.

Bevel and handedness

Petty knives are double-bevel and suit both hands. Some are ground with a slight right-hand bias, which is almost never noticeable at this size.

Steel recommendations

Petty knives cut a lot of acidic food (citrus, tomatoes, onions), so reactivity matters. Stainless like VG-10 or SG2/R2 is the low-maintenance route. Ginsan is a nice middle path if you like how carbon sharpens.

Carbon petty knives are popular with cooks who already own carbon. Misono’s Swedish carbon petty is a well-known example, fairly simple carbon steel that takes a keen edge and will darken with use. Wipe it between cuts. Our carbon vs stainless guide goes into more detail. Most petty knives run $50 to $150, and handmade ones go higher. Prices move with the yen.

Who should buy one, and who should skip it

Buy a petty if you already own a gyuto or santoku and keep reaching for a cheap paring knife. It is the most useful second Japanese knife for most cooks, and a sensible entry point if you want to try carbon steel on a smaller, cheaper blade first.

Skip it if you almost never do in-hand work and are happy with the paring knife you have. And do not buy a petty as your only knife. It is a support blade, not a main one.

Compare with

• Gyuto: the main knife a petty is usually paired with.
• Honesuki: a small, stiff blade built for poultry joints, which a petty is not.
• Guide: Best Japanese knives for beginners

If you want a petty that matches a knife you already own, tell us what you have and we will suggest a pairing with duties already included.