Daily safety snapshot
426mg sodium
19% sodium limit | 52% sat fat | 18% fiber target
100g Peanut Butter Protein — 22.2 g | Nutrition Calculator
100g of Peanut Butter contains 22.2 g of protein. Free converter with serving tables, volume conversion, raw vs cooked, and FAQs. Data from USDA FoodData Central.
100g Peanut Butter Protein Calculator
100g of Peanut Butter contains 22.2 g of protein. Use the converter above to calculate any weight or volume, or explore the tables below for common serving sizes. All values from USDA FoodData Central (FDC ID: 2707537).
Result
100g Peanut Butter Protein
22.2 g protein
Computed from 100 g of food and USDA FoodData Central Survey/FNDDS Foods.
Reverse Calculation
Protein target to food amount
100 g (3.53 oz, 0.39 cups)
Reverse math uses 22.2 g protein per 100 g from USDA FoodData Central Survey/FNDDS Foods.
Peanut Butter Macros by Serving Size
Peanut Butter Macros by Common Serving
Peanut Butter Protein Range Around 100g
Peanut Butter Macros by Volume Measure
Peanut Butter Prep-State Logging Check
Peanut Butter Nutrient Efficiency Per Calorie
Peanut Butter Dietary Profile
High-protein: Peanut Butter delivers 22.2g protein per 100g — qualifies as a high-protein food (≥20g/100g threshold).
Vegan: Contains no animal products.
Vegetarian: No meat or fish.
Gluten-free: Safe for celiac and gluten-sensitive individuals.
Common meal contexts: high-protein meal, carbohydrate base, fiber support, potassium source.
Peanut Butter Benefit Signals
- Protein dense: Useful when building a high-protein meal or snack. Basis: Protein per 100g is at least 20g..
- Fiber contributor: Can help raise daily fiber coverage when portion size fits the meal. Basis: Fiber is present in the USDA nutrient record..
- Potassium source: Adds potassium to the day coverage tracker. Basis: Potassium is present in the USDA nutrient record..
Peanut Butter Daily Nutrient Coverage
Smart Protein Substitutes for Peanut Butter
Peanut Butter Condition-Aware Nutrition Notes
Real-World Peanut Butter Serving Sizes
- Guideline amount per sandwich (~32g): 7.1 g protein. Guideline amount per sandwich is listed by USDA at 32g for this food.
- 1 single serving (~45g): 10 g protein. 1 single serving is listed by USDA at 45g for this food.
- 1 tablespoon (~16g): 3.6 g protein. 1 tablespoon is listed by USDA at 16g for this food.
- Guideline amount per slice of bread/roll (~16g): 3.6 g protein. Guideline amount per slice of bread/roll is listed by USDA at 16g for this food.
Common Peanut Butter Measurement Mistakes
- Logging a different prep state than the food actually eaten can change calories and macro density.
- Sauces, oil, breading, and added ingredients are not included unless they are part of this USDA food description.
- Assuming every household serving has the same gram weight; use the listed serving anchors when available.
Peanut Butter Protein — Frequently Asked Questions
How much protein is in 100g of Peanut Butter? 100g of Peanut Butter contains 22.2 g of protein (USDA FoodData Central). This is considered high-protein.
How much protein is in 1 cup of Peanut Butter? One US cup of peanut butter weighs approximately 256g (density: 1082 kg/m³). That serving contains 56.8 g of protein — computed as 256g ÷ 100 × 22.2.
How many grams of Peanut Butter do I need to eat to get 30 g of protein? To reach 30 g of protein from Peanut Butter, you need approximately 135g — calculated as (30 ÷ 22.2) × 100 = 135g.
Is Peanut Butter high in protein? Yes, Peanut Butter is high in protein at 22.2 g per 100g. It ranks among the better sources in its category.
What percentage of daily protein does 100g of Peanut Butter provide? 100g of Peanut Butter provides 22.2 g of protein, which is 44.4% of the reference daily intake (50 g/day for adults, based on a 2000-calorie diet). To reach 100% of your daily protein from Peanut Butter alone, you would need ~225g.
What are the most common mistakes when measuring Peanut Butter protein? 1. Logging a different prep state than the food actually eaten can change calories and macro density. 2. Sauces, oil, breading, and added ingredients are not included unless they are part of this USDA food description. 3. Assuming every household serving has the same gram weight; use the listed serving anchors when available.
How efficient is Peanut Butter as a source of protein per calorie? Peanut Butter provides 3.71 g of protein per 100 kcal, making it average as a protein-per-calorie source. This is useful for calorie-restricted diets where macronutrient density matters.
What formula does this Peanut Butter protein calculator use? The calculator uses protein = weight in grams / 100 x 22.2 g. For example, 100g of Peanut Butter gives 22.2 g of protein. Volume entries are first converted to grams using the food density value, then the same per-100g formula is applied.
Is Peanut Butter a good food for muscle building or high-protein goals? For muscle building or high-protein goals, Peanut Butter is an excellent choice — with 22.2 g of protein per 100g. Peanut Butter is also suitable for vegans, suitable for vegetarians, gluten-free, a high-protein option. For best results, combine Peanut Butter with other foods to hit your daily macro targets.
How reliable is the source data for Peanut Butter? Peanut Butter uses USDA FoodData Central Survey/FNDDS Foods as the nutrition source, FDC ID 2707537. Gram-based calculations use the per-100g source values, while cup and spoon estimates depend on the listed density and should be treated as practical serving estimates.
How to Calculate Peanut Butter Protein
- Weigh raw. Place your peanut butter on a kitchen scale before cooking to get the most accurate starting weight.
- Enter weight into the calculator. Select your unit (g, oz, lb, or cup) and hit Calculate.
- Read the result. The calculator shows protein content for your exact portion.
- Compare servings. Use the serving range table below to quickly compare protein across portion sizes.
- Log to your tracker. Enter the raw weight and raw entry in your nutrition app for consistent macro tracking.
Why Volume ≠ Weight: Peanut Butter Density Explained
Peanut Butter is dense (~1082 kg/m³ ≈ water). A 1-cup measure holds approximately 256 g.
Why does density matter? The same volume can hold very different amounts of food depending on how dense it is. Oats (350 kg/m³) are light and airy — 1 cup = ~80 g. Water has a density of 1000 kg/m³ — 1 cup = 236 g. This is why nutrition labels use weight (grams), not volume — it's a more reliable measure.
Formula: mass (g) = volume (mL) × density (kg/m³) ÷ 1,000. This calculator uses this formula automatically when you enter a volume measure for Peanut Butter.
Peanut Butter Page Quality Signals
Source, density, prep-state, serving, and allergen checks used to decide whether this page is safe to promote from generated to indexed.
Data Sources & Methodology
Data source: USDA FoodData Central. Referenced entries: Peanut Butter (FDC ID: 2707537).
Computation method: Macro values are calculated by multiplying the food's per-100g value by the requested weight in grams, then dividing by 100. Volume inputs are first converted to grams using the food's density (kg/m³) from USDA data, then the same formula applies: protein = (weight_g / 100) × proteinPer100g.
Accuracy note: Macro values represent averages across measured samples; individual items may vary ±5–10% depending on brand, farming method, and preparation technique. For clinical nutrition, consult a registered dietitian.
Update policy: Macro values are reviewed quarterly against USDA FoodData Central updates. Page last verified: 2026.