wheat bran contains about 57 calories per ounce, while corn bran has about 14 calories per ounce [NOTE OTHER SOURCES SAY DIFFERENTLY]. oat bran is 70 calories per ounce
https://www.sciencedirect.com/topics/agricultural-and-biological-sciences/corn-bran
these bags are 10 ounces so like 140 calories per ENTIRE BAG (tho they also have lecithin)