Food weight and portion guide
Peanut butter: calories and portions
Peanut butter, smooth style, without salt
The reference is smooth unsalted peanut butter. Brands differ in added sugar and oil.
Calculate your portion
Enter 0.1–5,000 g. Exclude inedible skin, stones and bones.
for 20 g:
- Calories
- 119.6 kcal
- Protein
- 4.4 g
- Carbohydrate
- 4.5 g
- Fat
- 10.3 g
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Nutrition by weight
| Weight | Calories | Protein | Carbohydrate | Fat |
|---|---|---|---|---|
| 20 g | 119.6 | 4.4 g | 4.5 g | 10.3 g |
| 40 g | 239.2 | 8.9 g | 8.9 g | 20.5 g |
| 100 g | 598 | 22.2 g | 22.3 g | 51.4 g |
Values are scaled from the per-100-g data and rounded. “Calories” means kilocalories (kcal).
Tips for weighing and logging
Weigh the amount used and prefer your product label when available.
To calculate manually, multiply your portion weight in grams by 598 and divide by 100. For example, 20 g provides approximately 119.6 kcal.
When logging a photo, check the food, cooking method and estimated portion before saving. A photograph cannot reliably show hidden oil or exact weight.
Sources and calculation method
The record below provides values per 100 g of edible food. One reference variety or brand does not represent every product.Library method and limitations
- USDA FoodData Central — SR Legacy — Peanut butter, smooth style, without salt · FDC ID: 172470 · SR Legacy Collection, April 2018
Data review and calculation: October 2, 2026. Author: Avocado editorial team. This guide supports food logging; it does not replace personalised advice from a registered dietitian.