书画平尺的一般计算方法：宣纸一般分为三尺、四尺、五尺、六尺、八尺、丈二等数种，现在还有特殊制式。书画计算中的尺与现在计量的尺有区别，它是指我国木匠鼻祖鲁班发明的俗称的鲁班尺。以四尺宣为例，其尺幅为68x137厘米，对开或三裁就是对裁或均裁三份，一般来讲四尺整张就是八平尺，对开就是四平尺，每平尺就是大约33x33厘米。
The general calculation method for calligraphy and painting rulers: Xuan paper is generally divided into several types, such as three feet, four feet, five feet, six feet, eight feet, and two zhang. There are also special standards now. The ruler used in calligraphy and painting calculation is different from the ruler used in modern measurement. It refers to the commonly known Lu Ban ruler invented by the founder of Chinese carpenters, Lu Ban. Taking the four foot Xuan as an example, its width is 68x137 centimeters. Split or triple cut means split or evenly cut in three parts. Generally speaking, a four foot whole sheet is an eight square foot, split is a four square foot, and each square foot is approximately 33x33 centimeters.
立轴为中国书画装裱的一种最常见形制。一般以直幅画心为主，画心如为4尺3开或4尺6开，一律按3平方尺或1平方尺半计价，超过此两种规格者，按实际面积计价。
Vertical axis is the most common form of mounting Chinese calligraphy and painting. Generally, a straight painting center is used as the main method. If the painting center is 4 feet 3 inches or 4 feet 6 inches, it will be priced at 3 square feet or 1 and a half square feet. If it exceeds these two specifications, it will be priced based on the actual area.
而条幅的方尺则以其长度来定，宽度不足1尺仍按1尺计算，超过1尺则按实际面积计算，如长3尺、宽8寸，按3平方尺计算；长4尺、宽1尺半，按6平方尺计算。
The square ruler of the banner is determined by its length. If the width is less than 1 foot, it is still calculated as 1 foot. If it exceeds 1 foot, it is calculated as the actual area. If it is 3 feet long and 8 inches wide, it is calculated as 3 square feet; 4 feet long and 1.5 feet wide, calculated as 6 square feet.
对联既可单独悬挂又可与大幅中堂画同时悬挂，是深受大众、尤其是文人喜爱的形制。一般按幅长而论，其方尺与幅长相同的条幅相当，如4尺对联与4尺条幅的平方尺和价格基本一致。但需注意的是，对联上的字数与价格成正比，如4尺7字联要比4尺5字联价高两成左右。
Couplets can be hung separately or simultaneously with large nave paintings, making them a popular form among the public, especially literati. Generally speaking, according to the length of the banner, its square foot is equivalent to that of a banner with the same length. For example, the square foot and price of a 4-foot couplet are basically the same as those of a 4-foot banner. However, it should be noted that the number of words on the couplet is directly proportional to the price. For example, a 4-foot 7-character couplet is about 20% more expensive than a 4-foot 5-character couplet.
横披的形制为画心竖短横长，一般竖长为1尺，横长不超过4尺。由于其比较适于布置在现代居室中，如常用于挂在客厅沙发的上方，所以比较受人们的欢迎。无论是国画还是书法作品，其基本面积的换算与条幅相似，但价格要比面积相当的条幅高两成左右。
The shape of the horizontal drape is to draw the center vertically and horizontally, with a length of 1 foot and a length of no more than 4 feet. Due to its suitability for decoration in modern living rooms, such as hanging above the living room sofa, it is more popular among people. Whether it is traditional Chinese painting or calligraphy, the conversion of basic area is similar to that of banners, but the price is about 20% higher than that of banners with equivalent area.
扇面一般按一平尺半计算，成扇以两平尺计算，团扇按直径大小计算；
Fan surfaces are generally calculated based on one and a half square feet, while fan sections are calculated based on two square feet, and fan sections are calculated based on their diameter;
手卷以横长计算，横长越长平尺越大。但须掌握一点，手卷的价格如按平尺计算与其他制式有明显的区别：每平尺的价格约为其他制式价位的一倍半到两倍（指同一书画家、同一时期、题材、质量基本差不多的作品）。
The hand roll is calculated based on its horizontal length, and the longer the horizontal length, the larger the flat ruler. But one thing to be aware of is that the price of hand scrolls is significantly different from other standards when calculated based on a square foot: the price per square foot is about one and a half to two times the price of other standards (referring to works of the same calligrapher, painter, period, subject matter, and quality that are basically the same).