**Simple Calculation of Painting and Calligraphy Size**

Xuan paper is generally divided into three-foot, four-foot, five-foot, six-foot, eight-foot, and two-foot, and now there are special standards. However, the ruler in the calculation of painting and calligraphy works is different from the ruler we measure now. It refers to the commonly known Luban ruler invented by Luban, the originator of Chinese carpenter. Taking the four-foot Xuan as an example, its size is 68 x 136 cm, and the split or three cuts are cut in half or three parts. Generally speaking, the whole four-foot sheet is eight square feet, and the split is four square feet. The ruler is about 33 x 33 cm.

**Here's a size cheat sheet:**

(1) Pieces 33×33cm1 square foot

(2) Pieces 45×33cm1.4 square feet

(3) Four feet and three openings, 68 x 45 cm2.8 square feet

(4) Four feet and four open 68×34 cm4 square feet

(5) Four-foot split bucket square 68 x 68 cm4 square feet

(6) Four-foot split strips 34 x 136 cm4 square feet

(7) Four-foot whole paper 68×136 cm8 square feet

(8) Five-foot whole paper 81×155 cm11.5 square feet

(9) Six-foot whole paper 96×178 cm15.6 square feet

(10) Eight feet whole paper 122×244 cm27 square feet

(11) Zhang 2 whole paper 144×366 cm48 square feet

(12) zhang six whole paper 200 x 498 cm92 square feet

**Here are two calculation formulas:**

(1) Length (m) × width (m) × 9 = square feet

Example: Four-foot full paper 1.36×0.68m×9=8.32 square feet. (Basis: 1 square meter is equal to 9 square feet, in meters.)

(2) Length × width / 0.1089 = square feet

Example: Four-foot whole paper 1.36×0.68 meters/0.1089=8.4 square feet. (Basis: 33 × 33 cm = 1089 square centimeters. The unit of calculation is centimeters.)

It can be seen that the sizes calculated by these two calculation methods are almost the same, so just remember one is almost the same.