How about jeans sizes
Jeans sizes work in inches. The first number is the waist size, in this case size 40 which equates to 101.6 cm. The second number is the measure of length, this concerns 32 here and amounts to 81.3 cm. Size 36 is usually for the tall man with an above average height from 1.95 meters.
How do you measure yourself
You can do this with a measuring tape circumference of your hips, waist and thighs. Don't forget to measure the length of your inner legs. Did you measure everything? Consult the size chart for the correct size. The circumference of your thigh is particularly important when buying skinny-fit jeans or slim-fit jeans.
What are widths
You can recognize the width size by the first number of the size combination. So with jeans that is 40/32. A width size is based on a waist size.
What are measures of length
You can easily measure your height! Grab a tape measure and measure from your crotch to where you want the trouser leg to sit. Ultimately, you can consult a size chart to ultimately determine your pants length.