To convert 12 quarts and 2 pints into a single unit, let's convert everything into quarts.
1 pint is equal to 0.5 quarts. Therefore, 2 pints can be converted to quarts as follows:
\[ 2 \text{ pints} \times 0.5 \text{ quarts/pint} = 1 \text{ quart} \]
Now, add this to the 12 quarts:
\[ 12 \text{ quarts} + 1 \text{ quart} = 13 \text{ quarts} \]
So, 12 quarts and 2 pints is equal to 13 quarts.