How much asphalt is in the world?

Estimating the total amount of asphalt in the world is challenging due to its various forms and uses. However, it is primarily derived from the refining of crude oil, with about 5-7% of crude oil production resulting in asphalt. Given the vast quantities of crude oil produced globally, it is estimated that billions of tons of asphalt exist, primarily in roads, roofing, and other infrastructure. The exact figure is difficult to pinpoint as it continually changes with production and consumption rates.