The final product of one turn of Calvin cycle is 2 molecules of glyceraldehyde-3-phosphate (G3P) molecules. For each G3P synthesized, the cycle spends nine molecules of ATP and six molecules of NADPH2. The light reactions sustain the Calvin cycle by regenerating the ATP and NADPH2.
Light, water and carbon dioxide are required in the calvin cycle, 3 photons, 3 water molecules, and 3 carbon dioxide, although most people refer to photosynthesis and making glucose, requiring 2 calvin cycles
The plant produces sugar during the Calvin Cycle of photosynthesis. This is part of the "dark reactions" in the stroma, which reduce CO2 to C6H12O6, or glucose (simple carbohydrate). The Calvin Cycle is also known as the "Sugar Factory" of the plant.