Convert Stere (st (vol)) to Acre-Foot (US Survey) (ac*ft (US)) instantly.
About these units
Stere (st (vol))
A stere is exactly 1 cubic meter, but with a particular association: it was defined specifically for measuring stacked firewood. Logs are irregular, so the stere measures the approximate space that a cubic meter of stacked wood occupies (including air gaps). The stere is still used in France and some other European regions as part of forestry traditions. Firewood sales often use the stere to maintain consistency with historical practices. The stere's survival shows how volume measurement often reflects cultural and economic tradition rather than purely scientific convenience, especially in long-standing industries like wood harvesting.
Acre-Foot (US Survey) (ac*ft (US))
The US survey acre-foot differs extremely slightly from the international acre-foot due to the slight difference between the survey foot and the international foot. While the distinction is negligible in most contexts, it is important in surveying, legal water rights, and long-term hydrological accounting, especially in regions where large historical datasets were recorded using US survey measures. This variant highlights how even subtle unit differences can have major implications when dealing with huge volumes over long timescales, such as state water budgets and inter-state compacts.