How Many Calories In A Teaspoon Of Sugar?

If you are on a diet then you might be trying to avoid sugar and foods with too much of it. However, you still need to have some sugar in your diet, but not too much. In order to work out the right amount you should know how many calories sugar has. According to the USDA:

Calories In A Teaspoon Of Sugar


  • One teaspoon of white sugar (2.5 grams) = 10 Calories
  • One tablespoon of unsifted white sugar (8 grams) =31 Calories
  • One cup  of sifted white sugar (100 grams) =389 Calories
  • One cup of unsifted white sugar (120 grams) =467 Calories