Calories in
sour cream, fat free
74 kcal per 100 g Sour cream, fat free contains 74 calories per 100 grams, or about 170 calories per cup. Per 100 g it provides 3.1 g protein, 15.6 g carbohydrate and 0.0 g fat.
By calories that splits 83% carbohydrate, 17% protein, 0% fat — dissected below.
SOURCE·USDA SR Legacy·FDC 173444·REVIEWED JUL 2026
The 4·4·9 shorthand adds to 75 kcal and USDA publishes 74 kcal. The arithmetic closes, so the axis above is simply that figure divided by the shares.
Source—USDA FoodData Central, SR Legacy—FDC 173444—retrieved 2026-07
How this is worked out
- USDA measures every nutrient per 100 g of edible portion. That row is published here unchanged — nothing is rounded up, smoothed or "adjusted".
- The energy figure is USDA's own, derived with food-specific factors. This site never computes the calorie count it publishes.
- The Atwater shorthand 4 · 4 · 9 is applied to the protein, carbohydrate and fat grams only to split that energy into shares — and where the shorthand disagrees with the published figure, the gap is printed rather than hidden.
- A serving is a straight proportional conversion of the per-100 g row, using USDA's own household measures for the grams.
- The walking figure uses MET 4.0 at 70 kg, the same equation the sister site publishes.
per serving = per 100 g × serving grams ÷ 100 energy shares = 4·P + 4·C + 9·F (P, C, F in grams) walk minutes = kcal ÷ (4.0 × 3.5 × 70 ÷ 200)
Calories in a typical serving
Per-100 g figures are useful for comparison but nobody eats 100 g of anything on purpose. These are the USDA's own household measures.
| Serving | Grams | Calories | Protein | Carbs | Fat |
|---|---|---|---|---|---|
| 1 tablespoon | 12.0 g | 9 | 0.4 g | 1.9 g | 0.0 g |
| 1 cup | 230.0 g | 170 | 7.1 g | 35.9 g | 0.0 g |
SOURCE·USDA SR Legacy·REVIEWED JUL 2026
Full nutrition, per 100 g and per cup
| Nutrient | Per 100 g | Per cup |
|---|---|---|
| Energy | 74 kcal | 170 kcal |
| Protein | 3.1 g | 7.1 g |
| Total fat | 0.0 g | 0.0 g |
| Saturated fat | 0.0 g | 0.0 g |
| Carbohydrate | 15.6 g | 35.9 g |
| Fibre | 0.0 g | 0.0 g |
| Sugars | 0.4 g | 0.9 g |
| Sodium | 141.0 mg | 324.3 mg |
| Potassium | 129.0 mg | 296.7 mg |
| Calcium | 125.0 mg | 287.5 mg |
| Iron | 0.0 mg | 0.0 mg |
| Vitamin C | 0.0 mg | 0.0 mg |
| Vitamin A | 73.0 µg | 167.9 µg |
| Cholesterol | 9.0 mg | 20.7 mg |
| Water | 80.6 g | 185.4 g |
A dash means the nutrient was not measured for this item, which is not the same as zero.
SOURCE·USDA SR Legacy·FDC 173444·REVIEWED JUL 2026
How sour cream, fat free compares
Among the 72 dairy and egg products items on this site, sour cream, fat free ranks 66 of 72 by calorie density, against a category average of 309 kcal per 100 g — so it is about 76% less calorie-dense than typical for its group.
It carries 4.2 g of protein per 100 calories, so it is not a meaningful protein source.
To burn off one cup (170 kcal), a 70 kg adult would walk for roughly 35 minutes — see the walking calculation on our sister site, or pick a different activity. Treat that as a sense of scale rather than a rule: eating and moving are not a simple ledger.
SOURCE·USDA SR Legacy·REVIEWED JUL 2026
A reference table describes the average sour cream, fat free. Yours was grown somewhere, picked at some ripeness, and cooked by you.
Questions this entry settles
How many calories are in sour cream, fat free?
Sour cream, fat free contains 74 calories per 100 g, which works out to about 170 calories per cup. It also provides 3.1 g of protein, 15.6 g of carbohydrate and 0.0 g of fat per 100 g.
What is the macro breakdown of sour cream, fat free?
By calories, sour cream, fat free is roughly 83% carbohydrate, 17% protein and 0% fat. That makes it a predominantly carbohydrate-based food.
How long does it take to burn off a cup?
About 35 minutes of ordinary walking for a 70 kg adult (MET 4.0). That is a rough guide for scale, not a prescription — appetite and activity interact in ways a simple subtraction does not capture.
Is this figure exact for the sour cream, fat free I bought?
No. These are USDA reference values, averaged across samples. Real foods vary with variety, ripeness, growing conditions, cut, brand and how they were cooked — 10–20% either way is normal. Use them for planning, not precision.
Neighbouring entries
The 6 foods that sit closest to sour cream, fat free on the calorie-density shelf, all within dairy and egg products.
Source: USDA FoodData Central, SR Legacy — public domain, reviewed JUL 2026. Full USDA description: "Sour cream, fat free". General information only — not medical or nutrition advice. Values are averages for a food type and vary by brand, ripeness and preparation.
