The chemical formula for sugar depends on what type of sugar you're referring to. Here are some common examples:

* Sucrose (table sugar): C₁₂H₂₂O₁₁

* Glucose (blood sugar): C₆H₁₂O₆

* Fructose (fruit sugar): C₆H₁₂O₆

* Lactose (milk sugar): C₁₂H₂₂O₁₁

All of these sugars are carbohydrates, which means they are made up of carbon, hydrogen, and oxygen atoms. However, the specific arrangement of these atoms differs in each type of sugar, leading to different properties and tastes.