How much canals are there in the world?

It is estimated that there are over 1,000,000 kilometers of navigable canals worldwide. These canals vary greatly in size, purpose, and construction, with some of the most notable including the Panama Canal, Suez Canal, and the extensive canal systems in countries like the Netherlands and China. Canals serve various functions, including transportation, irrigation, and drainage. The total number of canals can be difficult to quantify due to the diversity and varying definitions of what constitutes a canal.