What is the life span of a giant star?

Giant stars typically have shorter lifespans than smaller stars due to their rapid consumption of nuclear fuel. Their lifespans can range from a few million to around 100 million years, depending on their mass. More massive giants burn through their hydrogen and helium more quickly, leading to a swift evolution into red supergiants and eventual supernova explosions. In contrast, less massive giants may have slightly longer lifespans but still remain relatively short in the cosmic scale.