On November 16, 2018, representatives from more than 60 countries voted during the 26th meeting of the General Conference on Weights and Measures in Versailles, France to redefine the kilogram. Today, that change finally takes effect.

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On November 16, 2018, representatives from more than 60 countries voted during the 26th meeting of the General Conference on Weights and Measures in Versailles, France to redefine the kilogram. Today, that change finally takes effect.