The theme for World Metrology Day 2023 is Measurements supporting the global food system.

This theme was chosen because of the increasing challenges of climate change, and global distribution of food in a world whose population reached 8 billion at the end of 2022.

World Metrology Day is an annual celebration of the signature of the Metre Convention on 20 May 1875 by representatives of seventeen nations. The Convention set the framework for global collaboration in the science of measurement and in its industrial, commercial and societal applications. The original aim of the Metre Convention – the world-wide uniformity of measurement – remains as important today as it was in 1875.

The World Metrology Day project is realized jointly by the BIPM and the OIML.

2023年世界計量日的主題是支持全球糧食系統(tǒng)的計量。
之所以選擇這一主題，是因為氣候變化的挑戰(zhàn)日益增加，以及2022年底人口達到80億的世界糧食的全球分配。
世界計量日是17個國家代表于1875年5月20日簽署《米制公約》的周年慶典?！豆s》為計量科學及其工業(yè)、商業(yè)和社會應用領域的全球合作奠定了框架?！睹字乒s》的最初目標——全球測量的統(tǒng)一性——在今天仍然與1875年一樣重要。
世界計量日項目由BIPM和OIML共同實現(xiàn)。