Here's a general range:
* Smallest: The dik-dik can weigh as little as 3.5 kg (7.7 lbs).
* Largest: The eland, the largest antelope, can weigh up to 1,000 kg (2,200 lbs).
To give you an idea of the variety, here are some examples of different antelope sizes:
* Springbok: 30-50 kg (66-110 lbs)
* Gemsbok: 100-200 kg (220-440 lbs)
* Blackbuck: 30-45 kg (66-99 lbs)
* Impala: 40-70 kg (88-154 lbs)
* Sable antelope: 150-250 kg (330-550 lbs)
So, to answer your question: a fully grown antelope can weigh anywhere from 3.5 kg to 1,000 kg, depending on the species.