To convert kilograms to grams, you multiply the number of kilograms by 1,000 (since there are 1,000 grams in a kilogram).
So, to convert 2.75 kilograms to grams:
\[ 2.75 \text{ kg} \times 1000 \text{ g/kg} = 2750 \text{ g} \]
Therefore, 2.75 kilograms is equal to 2,750 grams.