The Mix Fat Per 100g Calculator tells you exactly how much fat ends up in a two-ingredient mixture. Combine a fatty ingredient with a lean one — ground beef with turkey, whole-milk yogurt with Greek yogurt, or rice with olive oil — and the tool returns the fat content of the finished blend per 100g.
For each ingredient, enter the amount you are using and its fat value in grams per 100g. Amounts can be typed in grams, ounces, or kilograms, and the calculator converts everything to grams before combining. The result screen shows fat per 100g of the mix, total fat, total weight, fat-based calories per 100g, and a step-by-step breakdown of the math.
Meal preppers, home cooks, macro trackers, and recipe developers can all use this to skip the guesswork when estimating the nutrition of custom blends and mixed dishes.
🥩 Mix Fat Per 100g Calculator
Combine two ingredients and find out exactly how much fat is in the finished mix per 100g.
Ingredient A
Ingredient B
📋 Step-by-step breakdown
Quick Start: Enter Your Blend
For each ingredient, enter two numbers: the amount you are using and its fat content in grams per 100g. The amount can be typed in grams, ounces, or kilograms using the dropdown, while the fat value should always be expressed per 100g. If your food label gives fat for a serving that is not 100g, convert it first by dividing the fat by the serving size and multiplying by 100. The calculator converts both weights to grams, works out each ingredient's fat contribution, and presents the final answer in several useful formats.
The Math Behind the Mixture
Fat per 100g is simply a percentage by weight. If Ingredient A contains 15g of fat per 100g and you use 200g of it, it contributes 200 × 15 ÷ 100 = 30g of fat. If Ingredient B contains 3g per 100g and you use 100g, it contributes 3g. The finished mix weighs 300g and holds 33g of fat, so its fat content is 33 ÷ 300 × 100 = 11g per 100g.
The general formula is:
Fat per 100g of mix = (A_g × F_A + B_g × F_B) ÷ (A_g + B_g)
Here A_g and B_g are the two weights in grams, and F_A and F_B are the fat values per 100g. The ÷100 factors cancel out, which is why the formula looks so clean. The same weighted-average principle applies to protein, carbohydrate, sodium, and any other nutrient reported per 100g.
Worked Examples
Example 1: A leaner beef blend. You combine 300g of 80/20 ground beef (20g fat per 100g) with 200g of extra-lean ground turkey (5g fat per 100g). Total fat = 300 × 20 ÷ 100 + 200 × 5 ÷ 100 = 60 + 10 = 70g. Total weight = 500g. Fat per 100g = 70 ÷ 500 × 100 = 14g. The calculator also reports 70g of total fat and about 126 kcal of fat energy per 100g.
Example 2: Yogurt with peanut butter. You mix 150g of non-fat Greek yogurt (0.4g fat per 100g) with 20g of peanut butter (50g fat per 100g). Total fat = 150 × 0.4 ÷ 100 + 20 × 50 ÷ 100 = 0.6 + 10 = 10.6g. Total weight = 170g. Fat per 100g = 10.6 ÷ 170 × 100 = 6.2g. The small spoonful of peanut butter raises the fat noticeably because it is very energy-dense.
Real-World Applications
This calculator earns its keep in meal prep: burgers and meatballs that blend beef with turkey, casseroles, sauces, dips, batters, and homemade sausage. It is also useful for macro trackers who want an exact number for a custom mix instead of a rough database guess. Because labelling laws in many countries require nutrition to be stated per 100g, recipe developers and small-batch producers can use the tool to draft labels before sending samples to a lab for official analysis.
Reference: Common Fat Values
Use these typical raw values as a starting point. Always prefer the number printed on your own package label when available.
| Ingredient (raw) | Fat per 100g |
|---|---|
| Ground beef, 80/20 | 20 g |
| Ground beef, 93/7 | 7 g |
| Ground turkey, 99% lean | 1 g |
| Chicken breast, skinless | 1–2 g |
| Chicken thigh, skinless | 6–8 g |
| Whole-milk yogurt, plain | 3.3 g |
| Non-fat Greek yogurt | 0.4 g |
| Peanut butter, smooth | 50 g |
| Almonds, whole | 50 g |
| Olive oil | 100 g |
| White rice, cooked | 0.3 g |
| Whole egg | 9–11 g |
Frequently Asked Questions
Do I enter the fat value for raw or cooked ingredients? Enter whatever matches your food. Fat per 100g changes during cooking because water is lost, so use the raw value with raw weights and the cooked value with cooked weights — never mix the two in one calculation.
Why does the calculator multiply fat by 9 kcal? Fat supplies about 9 kcal per gram, compared with 4 kcal per gram for protein and carbohydrate. The calorie figure shown covers fat energy only; the complete energy content of the mix also depends on its protein and carbohydrate.
Additional Resources
For authoritative nutrient data, the USDA FoodData Central database provides lab-tested values for thousands of foods. The Food energy article on Wikipedia explains how energy values like the 9 kcal per gram of fat are derived and used in nutrition labelling.