This granola protein calculator tells you exactly how much protein is in your bowl of granola, whether you measure it in grams, ounces, or cups. Just enter your serving size and pick a granola type — from classic oat blends to high-protein supermarket brands — and the calculator returns the protein total, protein calories, and the share of calories coming from protein.
Because granola recipes vary widely, the tool also includes a custom mode. If you know the protein and calorie values printed on your bag, enter them directly for a truly accurate result. The optional preset buttons make logging a quick 30 g or 40 g serving effortless.
This tool is useful for anyone tracking daily protein intake, building a high-protein breakfast, or comparing the protein density of different granola products. It’s especially handy for athletes, people on high-protein diets, and parents who want to compare cereal options for their kids.
🥣 Granola Protein Calculator
Protein per serving, protein calories, and % calories from protein for any granola.
How to Use This Granola Protein Calculator
Using the calculator takes less than a minute. Start by entering the amount of granola you plan to eat. Choose the unit that matches your measurement: grams for a kitchen scale, ounces for a recipe or US nutrition label, or cups for a quick scoop. If you choose cups, the calculator assumes a density of about 110 g per cup, which is a common average for granola clusters; actual density can range from 90 g to 130 g depending on the size of the clusters and how tightly they pack.
Next, select the granola type. The five built-in options cover typical store-bought and homemade recipes. Each option includes an average protein value per 100 g and an average calorie value per 100 g. If your granola has a nutrition label, choose “Custom” and enter the exact protein and calorie values from the label. This is the most accurate way to use the tool, especially for boutique brands or homemade mixes with added protein powder.
Tip: Weigh your granola on a kitchen scale instead of measuring by volume whenever possible. A “cup” of granola can vary by 20–30% between brands.
What Determines Protein in Granola?
Granola’s protein comes mainly from three sources: oats, nuts, and seeds. Rolled oats contain around 13–17 g of protein per 100 g dry weight, although that percentage drops once sweeteners and oils are added to the mix. Almonds supply about 21 g of protein per 100 g, walnuts about 15 g, and pepitas (pumpkin seeds) around 19 g per 100 g. Adding protein powder — whey, casein, pea, or soy — is the most effective way to push a granola’s protein content into the 20 g-per-100 g range.
Store-bought granola labels can be surprisingly different. Some high-protein granolas are formulated with added milk protein or soy protein isolate and hit 20–25 g protein per 100 g. Others are essentially toasted oats with 8–10 g per 100 g. Checking the label is always best; our built-in values are only starting points for planning.
How the Calculation Works
The calculation is a straightforward ratio. First, the serving size is converted to grams. Then the protein per 100 g is applied:
Protein (g) = serving size (g) × protein per 100 g ÷ 100
Once total protein is known, protein calories are calculated by multiplying by 4 kcal per gram of protein. The percentage of calories from protein is then calculated as (4 × protein per 100 g) ÷ calories per 100 g × 100. This percentage is independent of serving size, which is why it is a useful metric for comparing granola products side by side.
For cup measurements, the calculator uses 110 g per cup. To adjust for your own granola’s density, weigh one cup once and enter the custom density in place of the default if needed — or simply use the gram setting after weighing your bowl.
Worked Examples
Example 1: High-protein granola for breakfast. You eat 45 g of a high-protein granola with 20 g protein per 100 g. The calculator converts to 45 g, then computes 45 × 20 ÷ 100 = 9 g of protein. Those 9 g provide 36 kcal from protein, and the granola’s 400 kcal per 100 g means protein makes up about 20% of total calories.
Example 2: Half-cup of average store-bought granola. A half-cup is assumed to weigh 55 g. With 11 g protein per 100 g, the total protein is 55 × 11 ÷ 100 = 6.1 g, or about 24 kcal from protein. That’s a modest amount on its own; adding Greek yogurt or milk rounds out the meal nicely.
Reference Table: Protein and Calories in Common Granola Types
| Granola type | Protein per 100 g | Calories per 100 g | Protein calories |
|---|---|---|---|
| Classic oat granola | 10 g | 450 kcal | 40 kcal (8.9%) |
| Store-bought average | 11 g | 460 kcal | 44 kcal (9.6%) |
| High-protein granola | 20 g | 400 kcal | 80 kcal (20%) |
| Homemade with nuts and seeds | 13 g | 500 kcal | 52 kcal (10.4%) |
| Keto / low-carb granola | 9 g | 520 kcal | 36 kcal (6.9%) |
All values are typical averages based on common commercial and homemade recipes. Your specific product may differ, especially if it includes extra egg whites, Greek yogurt powder, or protein isolate.
Frequently Asked Questions
How many grams of protein are in one cup of granola?
Using the 110 g per cup assumption, a cup of average store-bought granola contains roughly 12 g of protein (110 × 11 ÷ 100). High-protein granola can deliver 22 g or more per cup.
Is granola a good source of protein?
Granola can be part of a high-protein diet, but standard granola is often more carbohydrate- and sugar-heavy. It’s usually best paired with other protein-rich foods. You can compare its calorie load with our oatmeal calorie calculator to see how it stacks up against a simpler oat breakfast.
Why do my results differ from the nutrition label?
Labels list values per 100 g or per serving as packaged. If you measure by volume, your scoop may not match the weight used on the label. Using a food scale eliminates that gap. For smoothie bowls, try our smoothie protein calculator to track the liquid add-ins too.
How can I make my bowl higher in protein?
Choose a granola with protein powder listed near the top of the ingredient list — usually 20 g per 100 g or more. Mix in nuts, seeds, or a spoonful of Greek yogurt. Top your bowl with milk or a high-protein milk alternative; 250 ml of cow’s milk adds about 8 g of protein, while soy milk adds similar amounts. If you make granola at home, add egg white powder or whey protein when mixing the dry ingredients, and keep the bake time low to avoid a tough texture.