How did Antoine Lavoisier contribute to the development of the metric system?

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Portrait of French chemist Antoine Laurent Lavoisier, shown in formal 18th-century attire with a white wig and ruffled cravat, looking slightly to his left. — Antoine Lavoisier Antoine Lavoisier.

Antoine Lavoisier contributed to the development of the metric system through his service on a government commission tasked with unifying weights and measures in France.2

While the broader effort to establish a rational, decimal-based system involved many scientists and was directed by the French Academy of Sciences, Lavoisier’s participation on this commission was a significant part of his administrative work during the early years of the French Revolution. His involvement helped facilitate the transition toward a standardized system that defined units of length, mass, and capacity, eventually leading to the formal adoption of the metric system in 1799.12