Stack (unit) From Wikipedia, the free encyclopedia Stack was a US unit of volume for stacked firewood. Symbol for the unit was stk.[1][2][3][4] Definition 108 cubic foot.[1] Conversion 1 stack ≡ 64 Load (squared)[1] 1 stack≡ 64 cubic foot[1] 1 stack≡ 64 m3 References [1]Cardarelli, F. (2003). Encyclopaedia of Scientific Units, Weights and Measures. Their SI Equivalences and Origins. London: Springer. pp. 52. ISBN 978-1-4471-1122-1. [2]"stack | Definition of stack in English by Oxford Dictionaries". Oxford Dictionaries | English. Archived from the original on September 25, 2016. Retrieved 2019-05-17. [3]"Stack dictionary definition | stack defined". www.yourdictionary.com. Retrieved 2019-05-17. [4]ENGLISH - ENGLISH DICTIONARY. V S Publishers. 2015. ISBN 9789350574195. Related Articles