Who intends to buy a suit should know his clothing size. How to find out this can be found here

The so-called normal sizes for suits based on the half of the chest circumference. So if you have a chest measurement of 100 centimeters with a height from 1.74 to 1.79 meters, your clothing size 50. There are also special sizes for lean and stocky men: Small, corpulent men share your chest by 4. With the same Chest of 100 centimeters and a height from 1.69 to 1.73 meters gives the size 25. Large, thin men belong to the size determination to your chest two counter it. At 100 centimeters chest and a body length from 1.84 to 1.88 meters, you therefore have the dress size 102nd