Considering a propane–butane mixture ratio of 35:65, the specific gravity of LPG is 0.5555. Based on this, 1 kg of LPG = 1.8002 liters of LPG, and 1 liter of LPG = 250 liters of gas. Therefore, 1 kg of LPG = 450.05 liters of gas, and 1 cubic meter of gas = 1,000 liters of gas. Considering [0.45 cubic meters of gas = 1 kg of LPG], 1 cubic meter of gas = 2.22222 kg of LPG. All information is took from the officical BERC website.