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0mg sodium
0% sodium limit | 0% sat fat | 0% fiber target
100g Butter Fat — 81.1 g | Nutrition Calculator
100g of Butter contains 81.1 g of fat. Free converter with serving tables, volume conversion, raw vs cooked, and FAQs. Data from USDA FoodData Central.
100g Butter Fat Calculator
100g of Butter contains 81.1 g of fat. 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.
Result
100g Butter Fat
81.1 g fat
Computed from 100 g of food and USDA FoodData Central reference.
Reverse Calculation
Fat target to food amount
100 g (3.53 oz, 0.46 cups)
Reverse math uses 81.1 g fat per 100 g from USDA FoodData Central reference.
Butter Macros by Serving Size
Butter Macros by Common Serving
Butter Fat Range Around 100g
Butter Macros by Volume Measure
Butter Prep-State Logging Check
Butter Nutrient Efficiency Per Calorie
Butter Dietary Profile
Butter is a versatile food suitable for most dietary patterns. Check macros above for your specific dietary requirements.
Butter Benefit Signals
- Portion-controlled base: Best value comes from weighing the serving and matching the source prep state. Basis: computed fallback.
Butter Daily Nutrient Coverage
Smart Fat Substitutes for Butter
Butter Condition-Aware Nutrition Notes
Real-World Butter Serving Sizes
- Small weighed portion (~50g): 40.6 g fat. Use when testing a small serving or recipe ingredient amount.
- Standard nutrition reference (~100g): 81.1 g fat. Matches the USDA per-100g source basis used on this page.
- Large weighed portion (~150g): 121.7 g fat. Useful for meal-prep portions and larger servings.
Common Butter Measurement Mistakes
- Mixing raw and cooked entries changes the math. This page uses the listed source record for Butter.
- Adding oil, sauces, sweeteners, breading, or drained liquid changes calories and macros beyond the base food values.
- For fat tracking, keep the same unit basis across the meal: grams, ounces, cups, or count-based servings should not be mixed without conversion.
Butter Fat — Frequently Asked Questions
How much fat is in 100g of Butter? 100g of Butter contains 81.1 g of fat (USDA FoodData Central). High in fat.
How much fat is in 1 cup of Butter? One US cup of butter weighs approximately 216g (density: 911 kg/m³). That serving contains 175.2 g of fat — computed as 216g ÷ 100 × 81.1.
How many grams of Butter do I need to eat to get 20 g of fat? To reach 20 g of fat from Butter, you need approximately 25g — calculated as (20 ÷ 81.1) × 100 = 25g.
Is Butter high in fat? Yes, Butter is high in fat at 81.1 g per 100g. It ranks among the better sources in its category.
What percentage of daily fat does 100g of Butter provide? 100g of Butter provides 81.1 g of fat, which is 104% of the reference daily intake (78 g/day for adults, based on a 2000-calorie diet). To reach 100% of your daily fat from Butter alone, you would need ~96g.
How efficient is Butter as a source of fat per calorie? Butter provides 11.31 g of fat per 100 kcal, making it excellent as a fat-per-calorie source. This is useful for calorie-restricted diets where macronutrient density matters.
What formula does this Butter fat calculator use? The calculator uses fat = weight in grams / 100 x 81.1 g. For example, 100g of Butter gives 81.1 g of fat. Volume entries are first converted to grams using the food density value, then the same per-100g formula is applied.
Is Butter a good food for keto or high-fat goals? For keto or high-fat goals, Butter is an excellent choice — with 81.1 g of fat per 100g. For best results, combine Butter with other foods to hit your daily macro targets.
How reliable is the source data for Butter? Butter uses USDA FoodData Central reference as the nutrition source. 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.
Should I measure Butter raw or cooked? Butter should be logged in the same prep state as the source record. If you weighed it cooked, avoid comparing it directly with a raw entry unless a cooked yield factor is available.
How to Calculate Butter Fat
- Weigh raw. Place your 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 fat content for your exact portion.
- Compare servings. Use the serving range table below to quickly compare fat 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: Butter Density Explained
Butter has a medium density (911 kg/m³). A 1-cup measure holds approximately 216 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 Butter.
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.
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: fat = (weight_g / 100) × fatPer100g.
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.