Gallon and litre (Convert gallons to litres) are often used daily, but Gallon to litre conversion (1 gallon to litre in India) is challenging. US Gallon Litre 0.01 gal 0.03785 l 0.1 gal 0.37854 l 1 gal 3.78541 l 2 gal 7.570823 l 3 gal 11.35623 l 4 gal 15.14164 l 5 gal 18.92705 l 6 gal 22.71246 l 7 gal 26.49787 l 8 gal 30.28328 l 9 gal 34.06869 l 10 gal 37.85411 l 20 gal 75.70823 l 50 gal 189.27058 l 100 gal 378.54117 l 1000 gal 3785.41178 l Imperial Gallon Litre 0.01 gal 0.04546 l 0.1 gal 0.45460 l 1 gal 4.54609 l 2 gal 9.09218 l 3 gal 13.63827 l 4 gal 15.14164 l 5 gal 22.73045 l 6 gal 27.27654 l 7 gal 31.82263 l 8 gal 36.36872 l 9 gal 40.91481 l 10 gal 45.4609 l 20 gal 90.9218 l 50 gal 227.3045 l 100 gal 454.609 l 1000 gal 4546.09 l