Calories in raw bacon.
393 kcal per 100 g.
Raw bacon is about 40% fat by weight. A slice loses roughly two-thirds of its weight in the pan — mostly water and rendered fat — which is why the cooked rows are far denser per 100 g but a cooked slice is only about 40 kcal.
Pork, cured, bacon, unprepared · SR Legacy (2018-04) · USDA FDC 168277
Nutrition for your portion
| Nutrient | Per 100 g | 100 g |
|---|---|---|
| Energy | 393 kcal | 393 kcal |
| Protein | 13.7 g | 13.7 g |
| Carbohydrates | 0 g | 0 g |
| Fat | 37.1 g | 37.1 g |
| Fibre | 0 g | 0 g |
| Sugars | 0.35 g | 0.35 g |
| Saturated fat | 12.6 g | 12.6 g |
| Sodium | 751 mg | 751 mg |
| Salt (calculated from sodium) | 1.88 g | 1.88 g |
| Vitamin A (RAE) | 11 ug | 11 ug |
| Vitamin D (D2 + D3) | 0.4 ug | 0.4 ug |
| Vitamin E (alpha-tocopherol) | 0.43 mg | 0.43 mg |
| Vitamin K (phylloquinone) | 0 ug | 0 ug |
| Vitamin C | 0 mg | 0 mg |
| Thiamin | 0.28 mg | 0.28 mg |
| Riboflavin | 0.08 mg | 0.08 mg |
| Niacin | 4.02 mg | 4.02 mg |
| Vitamin B6 | 0.27 mg | 0.27 mg |
| Folate, total | 0 ug | 0 ug |
| Vitamin B12 | 0.5 ug | 0.5 ug |
| Potassium | 201 mg | 201 mg |
| Calcium | 6 mg | 6 mg |
| Phosphorus | 166 mg | 166 mg |
| Magnesium | 13 mg | 13 mg |
| Iron | 0.38 mg | 0.38 mg |
| Zinc | 1.14 mg | 1.14 mg |
| Selenium | 20.1 ug | 20.1 ug |
| Iodine | Unknown | Unknown |
| Copper | 0.05 mg | 0.05 mg |
Energy comes from USDA nutrient 1008. Salt is calculated as sodium × 2.5, with unit conversion to grams. It is not a separately measured salt value.
Preparation
Raw bacon is 393 kcal per 100 g with 37.1 g of fat — it is a fat with some meat in it, and cooking is mostly a matter of deciding where that fat ends up. Baked, the cooked row reads 548 per 100 g, which is higher only because a rasher shrinks from 28 g to about 8. The calories in a rasher barely move; the grams collapse.
Logging this food
One raw rasher is 28 g and 110 kcal, and that is the number to log if you weigh before the pan — because after it, the same rasher is 8 g. USDA's package is 442 g and 1,737 kcal, which is about sixteen rashers. Never weigh cooked bacon against this row: it would put a rasher at 31 kcal instead of the 44 it actually is.
Swaps and alternatives
There is no light bacon in this set, and the honest lever is the count rather than the cut. Two rashers instead of four saves about 220 kcal before the pan. Baking on a rack lets the fat drip away rather than pooling; microwaving between paper does the same and lands at 476 per 100 g against baked bacon's 548.