What the main purpose of photosynthetic light- independent (dark) reactions?

The main purpose of the light-independent reactions, also known as the dark reactions or the Calvin cycle, is to convert carbon dioxide and other compounds into glucose using the energy stored in ATP and NADPH produced during the light-dependent reactions. These reactions occur in the stroma of chloroplasts and involve the fixation of carbon dioxide into organic molecules, ultimately leading to the synthesis of carbohydrates. This process is essential for providing energy and organic materials for the growth and metabolism of plants and other photosynthetic organisms.