A translated nail menu may show “10 nails,” “1枚MAX” and a measurement in millimetres close together. These do not describe the same thing. Before choosing an extension appointment in Japan, separate how many nails, the menu’s length category, and the physical length you want.

This guide explains what to ask—not a conversion chart. Do not turn a Japanese menu label into millimetres or assume the same label means the same length at every salon.

Three kinds of number to keep separate

本: the number of nails
In a nail-service description, 1本 means one nail and 10本 means ten nails. In 長さだし10本, the number identifies how many nails the extension service covers; it is not a length measurement.
1枚MAX, S, M or L: a menu label
Read it with the service and conditions around it. Ask the branch which category fits your desired result. Do not assume a universal conversion to millimetres.
mm: a physical measurement
The unit still needs a starting point and an endpoint. Added length, the part extending beyond the fingertip and the whole visible nail are different measurements.

These are reading examples, not a statement of available lengths, current prices or a maximum suitable for your nails.

When you say a length, show where it starts

“I want [number] mm” can leave the artist unsure what you mean. Are you describing the extra length to add to your current nail, the tip extending beyond your fingertip, or the whole nail from its base to the tip?

You can explain the endpoints without choosing a measurement first: “I mean the part beyond my fingertip, not the whole nail.” If you have measured something yourself, say what you measured rather than presenting the number as a salon category.

At the consultation, ask the artist to show the proposed length on your own nails before proceeding. Your starting nails and chosen shape matter; a number or another person’s photo alone cannot settle the final result.

Keep the original Japanese line beside its translation

Send the whole menu line, including conditions, instead of a cropped number. If an automatic translation turns 枚 into “sheets” or “pieces,” keep the Japanese wording so the salon can identify the intended category.

In BARON’s extension-menu context, a label such as 1枚MAX is not an order for one removable press-on nail. BARON mainly uses full-cover tips as part of its salon extension service. The service name alone does not tell you the precise method for your appointment; ask if that matters to your request.

Similarly, “MAX” in a menu does not mean the greatest length that can be made for every client. Check the category and the conditions of the particular option you are considering.

A dramatic photo is a design reference, not a ruler

BARON Shinjuku long square nail design with pink and blue zebra patterns and large decorations
A published BARON Shinjuku design. The photo shows shape and decoration, not a millimetre scale or proof that a current menu includes this length and art. Source: BARON Shinjuku’s published work.

Tell the salon whether you like the length itself, the square outline, or only the pattern. “I like the zebra design, but I want it shorter” is different from asking for the entire reference. For choosing a practical first length, use the first-long-nails guide.

Confirm the category and the full appointment separately

Once the branch identifies a length category, ask whether it falls within the selected menu’s conditions or requires a different option. Then check removal, the number of nails, color and art. A length allowance does not automatically cover decorations or make the entire service free.

For color-versus-art wording, see the Japanese nail-menu allowance guide. Keep this separate from the question of how long the nails will be.

“Hello, I am considering [branch] and this Japanese menu: [copy the full line]. I want extensions on [number] nails. By length, I mean [describe the starting point and endpoint]. I have attached my current nails and a reference; I like [specific details]. Which length category should I book? Please confirm any additional items, removal, total and time needed.”

Ask your chosen branch before booking

BARON is women-only. Send your menu line and photos through official LINE, naming the branch and your preferred Japan dates and times. Confirm language support, the proposed service and the appointment; a translation or enquiry alone does not confirm a booking.