Propane stoves and grills are great for outdoor cooking. There are various kinds of propane stoves, grills and cooking devices in multiple price ranges, making propane a universal cooking source.  Most propane camp stoves and grills should only be used outdoors. Unlike butane, which can be stored and used indoors with proper ventilation, propane should be used and stored only outdoors, unless specified otherwise. A 14.1 oz. propane tank provide between 2-4 hours with a small stove, and 1.5-3 hours with a larger stove. A 20 gallon tank will provide approximately 7.4 hours of burn time when fully open.