Axle stands are categorised according to the maximum working load they are able to support. This is measured in tonne.
Tonne is a metric system of mass equal to 1000 kilograms.
Axle stands’ load capacity ranges from 2 to 44 tonnes (2000-44000 kg).
This will be noted on each stand. However, it is important to note that some manufacturers specify the capacity of each stand, whilst others specify the total combined load. For example, if you buy a pair of axle stands with a maximum load of 10 tonnes (10000 kg), each stand will have a capacity of 5 tonnes (5000 kg).
Each individual axle stand will have a sticker containing information on the capacity per stand and per pair.