Octave (unit) From Wikipedia, the free encyclopedia Octave is a British unit of volume used for measuring whisky.[1][2][3] It is approximately 16 gallons.[1] Conversion 1 octave = 16 gallons [1] 1 octave = 0.073 m3[1] References [1]Cardarelli, François (2003). Encyclopaedia of Scientific Units, Weights and Measures. London: Springer. pp. 46. ISBN 978-1-4471-1122-1. [2]"[O] - Whisky Lexicon (Scotch whiskey words)". www.maltmadness.com. Archived from the original on May 17, 2019. Retrieved 2019-05-17. [3]"WEIGHTS AND MEASURES - NOW AND THEN". orrnamestudy.com. Retrieved 2019-05-17. Related Articles