In the gym, the weight range of most barbell pieces is between 1kg and 25kg, which is more intuitive and convenient to express in kilograms. For example, a barbell piece of 1 kg refers to a barbell piece with a weight of 1kg, a barbell piece of 2.5kg refers to a barbell piece with a weight of 2.5 kg, and so on.

Different countries and regions may have different habits. In some places, pounds may be used to mark the weight of barbell pieces. But in most cases, the weight of barbell pieces in the gym is expressed by male kg.