2 gallons how many quarts
Best Answer: Let's see. There are 4 quarts in a gallon, so 2 gallons would be 8 quarts, and adding an extra half gallon (2 quarts) to that would bring it up to 10 quarts. Source(s): Learned this in 2nd grade. Geezah Â· 5 years ago. Thumbs up.