Hi,
Answer: The Liver
My work: Carbohydrates are usually located and converted in the Liver.
Extra Information: The body uses Carbohydrates as glucose. From there glucose can be converted to glycogen.
Words you might not know:
1) Converted - To change.
2) Glucose - Energy source.
3) Glycogen - Stores Carbohydrates
I Hope I Helped!
~KingJupiter