How many ounces are in a bottle of water?

The number of ounces in a bottle of water depends on the size of the bottle. Common sizes include:

1. 16.9 oz: Standard small water bottle (500 mL).
2. 20 oz: Medium-sized bottle.
3. 33.8 oz: Larger bottle (1 liter).
4. 8 oz: Small kid-friendly bottle.

Always check the label on the bottle for the exact volume.