Two liters of water is equivalent to about four standard-sized water bottles of 16.9 ounces each (which is approximately 500 ml per bottle). This is because:

• 1 liter is approximately 33.8 ounces
• 2 liters is approximately 67.6 ounces
• Each standard water bottle contains 16.9 ounces
• Therefore, 67.6 ounces16.9 ounces per bottle≈4\frac{67.6\text{ ounces}}{16.9\text{ ounces per bottle}}\approx 416.9 ounces per bottle67.6 ounces​≈4 bottles

So, you would need about 4 bottles of 16.9 oz water to make up 2 liters.