Not sure how much film you have? Choose your format and frame rate, then enter feet, meters, running time or frames, and the other values update. Labs price by the foot, so knowing your footage helps you compare quotes. Reel sizes are only a rough guide: a 3-inch 8mm/Super 8 reel holds about 50 ft, and a 7-inch reel about 400 ft.
Film Calculator
Speed, Feet, Frames and Time — edit any field and the others update.
Next: see what film transfer costs or find a lab.