Everyone's figure is different, and the corresponding standard arm circumference is different, but there is a calculation formula that can be calculated.

Standard arm circumference calculation: wrist length (cm)* 1.7 is the golden ratio.

The arm circumference reflects the degree of development of arm muscles. Upper arm circumference includes upper arm tension circumference and upper arm relaxation circumference.

The average difference in arm circumference is 2-3.5cm for males and 0/.5-2 cm for females. Measure the thickest part of the upper arm with a tape measure.