How much does the blue whale weigh ? (approx) Share with your friends Share 0 Shukla Paladhi answered this Hi Vinnie,Blue whale has an average weight of approximately 108000 Kg. Hope this answer helps, All the best! 0 View Full Answer Jishnu Raj answered this 180 motric tons 0 Jishnu Raj answered this sorry 180 metric tons 0