To convert grams to kilograms, you divide the number of grams by 1,000, since there are 1,000 grams in a kilogram.
So, to convert 2,865 grams to kilograms:
\[
2,865 \, \text{g} \div 1,000 = 2.865 \, \text{kg}
\]
Therefore, 2,865 grams is equal to 2.865 kilograms.