Same origin; the extant word in English is "tun" for the barrel, and a ton was equal to the mass of the contents of a tun. https://en.wiktionary.org/wiki/ton#E

Same origin; the extant word in English is "tun" for the barrel, and a ton was equal to the mass of the contents of a tun. https://en.wiktionary.org/wiki/ton#English https://en.wiktionary.org/wiki/ton#English https://en.wiktionary.org/wiki/tun#English https://en.wiktionary.org/wiki/tun#English https://www.etymonline.com/word/ton#etymonline_v_15357 https://www.etymonline.com/word/ton#etymonline_v_15357