It is a 60L canister. So makes 60 liters of water at low sparkling level. High sparkling level is about 40L according to soda stream and also more accurate according to personal experience as i like it with alot of sparkle. So thats between 40x 1.5L bottles (6.5 six packs) and 26.5x1.5L bottles (4.5 sic packs). Its cheaper than branded water but more expensive thank ‘ discouter’water. Main benefit is less carrying and less pet bottles and the post box refill exchange delivery that sodastream offers is also fantasic.