How to Measure Sewing Button Size and Quantity in Apparel Industry


Buttons are an essential element of garment manufacturing. They not only serve as closures for the garment but also add style and design to it. However, determining the appropriate button size and quantity is a crucial aspect of the manufacturing process. In this blog, we will explore how garment factories calculate button size and quantity to ensure that the garment looks appealing and is functional.


In apparel industry, sewing button size is calculated by three units e.g. in mm (millimeter), inch and ligne in accordance with buyer's instructions.

For finding out Button Size in mm and inch, we need measure the dia of button with measurement tape. To find out Button Size in ligne, we need divide button's mm dia by 0.635.

Button's Dia
Button's Dia
Button size calculation :
1 inches = 40 ligne = 2.54 cm,

1 ligne = 0.635 mm

Now find out ligne of a button with 10mm Dia?

Answer: 10 ÷ 0.635 = 15.75 ligne or 16 L (L refers to ligne or ligner)

(Formula: button dia in mm ÷ 0.635= button ligne)
Sewing Buttons
Sewing Buttons

Button quantity calculation:

12 pcs = 1 dozen,

12 dozen = 1 gross,

12 gross = 1 GG

1 GG = 1728 pcs (GG means Great Gross)

Suppose: 

A shirt has 6 buttons, total order quantity 3456 pcs, find out total button quantity for the order.

Answer: 6 × 3456 ÷ 1728 = 12 GG.

(Formula: number of buttons per product × order quantity ÷ 1728)
(1 GG = 1728 pcs)

Note: Extra quantity (minimum 3%) is added while counting buttons for an order to save garments from risk in case of shortage due to defective & damaged.


In conclusion, calculating the appropriate button size and quantity is essential for garment manufacturing. Garment factories follow industry standards and buyer instructions to determine the button size and quantity for an order. The button size can be measured in millimeters, inches, and ligne, and the quantity is calculated based on the number of buttons per product and the order quantity. Adding an extra quantity of buttons to mitigate the risk of shortage due to defective or damaged buttons is a common practice in the industry.

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