Those two units of measure do not convert. One is weight or mass and the other is volume.
56 US fl oz = 1.66L
56 US fl oz = 1.65612 liters
56,000 milliliters are in 56 liters
18 oz = 0.532323532 liters
About 55.8 (55.793138) fluid ounces are contained in 1.65L
56 liters is 1.98 cubic feet.
0.55 liters = 18.6 oz
693 fl oz is 20.4945 liters
1884.8 fl oz is 55.74 liters
56 liters = 14.794 US gallons
1 liquid oz - 0.0295735296 liters.
30 US fluid oz is 0.9 (0.887206) liters.