Sprouts are small but mighty ingredients. Although they are mostly water and fiber, several varieties — especially lentil, chickpea, and soybean sprouts — provide a respectable amount of plant protein per 100g. Because serving sizes vary from bag to bag and brand to brand, comparing protein by weight is the clearest way to plan meals.
This calculator does three things: it stores reference protein values for common sprout types, converts a package label’s per-serving protein figure into a standard per-100g value, and works out how much protein is in the portion you actually plan to eat. Choose a sprout, adjust the protein value if your bag differs, enter a portion weight, and press Calculate.
The results are estimates, not medical advice. Sprout protein content can change with growing conditions, harvest time, and water content, so check your package label whenever accuracy matters.
🌱 Sprout Protein Per 100g Calculator
Compare sprouts by weight, convert a label’s per-serving protein to per 100g, and estimate protein in your portion.
The protein field updates automatically; pick Custom to type your own label value.
Enter the package serving size and protein per serving to calculate a corrected per-100g value.
📊 Results
Quick Start
Start by picking the sprout you are using from the dropdown menu. The calculator immediately fills in a reference protein-per-100g value for common varieties such as mung bean, lentil, chickpea, and soybean sprouts. If your bag lists a different number, type your own value into the protein field — choosing "Custom sprout" clears the preset so you can enter the figure printed on your package.
Next, enter the portion weight in grams: the amount you plan to eat after draining. Press Calculate and the tool shows protein per 100g plus the total protein in your portion. If your label gives protein per serving instead of per 100g, complete the optional label section with the serving size in grams and the protein per serving. The calculator derives a corrected per-100g value from your label and uses it for the portion calculation.
Formula Explained
The math is a simple proportion expressed per 100 grams. If you know protein per serving, you can scale it up:
Portion protein = (Protein per 100 g ÷ 100) × Portion weight in g
Both formulas are the same idea: find the protein in one gram, then multiply by how many grams you care about. The first version scales up to 100g so labels with different serving sizes can be compared fairly; the second scales down from 100g to your actual bowl. You can verify either calculation by hand in seconds — the calculator simply removes the arithmetic and rounds the result.
Worked Examples
Example 1 — Lentil sprouts from a label. A bag says a 95 g serving contains 8.6 g of protein. Using the optional label fields: (8.6 ÷ 95) × 100 = 9.05 g per 100 g. Enter 150 g as your portion and you get (9.05 ÷ 100) × 150 = 13.6 g protein in the bowl.
Example 2 — Mung bean salad. Reference data for mung bean sprouts is 3.0 g per 100 g. If your salad uses 120 g of sprouts, the protein is (3.0 ÷ 100) × 120 = 3.6 g. That is small on its own, but it stacks up when you add tofu, edamame, or seeds.
Example 3 — Comparing two brands. Brand A lists 4 g protein per 85 g serving; Brand B lists 6 g per 110 g serving. Standardized to 100 g: Brand A = (4 ÷ 85) × 100 = 4.7 g, Brand B = (6 ÷ 110) × 100 = 5.5 g. Now the comparison is clear.
Reference Table
Values below reflect raw, drained sprouts as reported in standard nutrition databases. Use them as a starting point — your package label is more accurate for your actual bag.
| Sprout type | Protein per 100 g | Note |
|---|---|---|
| Mung bean | 3.0 g | Very high water content |
| Alfalfa | 4.0 g | Light and airy texture |
| Broccoli | 2.9 g | Often eaten raw |
| Pea | 4.0 g | Sweet flavour |
| Lentil | 9.0 g | Good for cooking |
| Chickpea | 8.9 g | Nutty and filling |
| Soybean | 13.1 g | Highest of the common sprouts |
Tips & Best Practices
- Weigh after draining. Clinging rinse water adds grams without adding protein, which makes the protein percentage look lower than it really is.
- Match the state you eat. Raw and cooked sprouts have different water contents, so they show different protein per 100 g even from the same batch.
- Check the label first. Reference values are averages; actual protein can shift by a gram or two depending on the farmer, the season, and the harvest.
- Track blends separately. If you mix mung bean and lentil sprouts, weigh each type and add the protein together rather than averaging.
Factors Affecting Accuracy
Water content is the biggest source of variation in sprout protein data. The same batch can read higher protein per 100 g after drying out slightly in the fridge, and lower right after a thorough rinse. Growing conditions — light, temperature, humidity, and how long the sprouts were grown — also move the numbers, as does the specific variety or seed lot. Because of this, treat reference values as typical ranges rather than exact guarantees.
When precision matters for macro tracking, use the protein value printed on your package. If the label shows protein per serving, enter it in the optional label fields so the calculator standardizes it to 100 g before working out your portion. This gives the most accurate result the tool can produce.
Frequently Asked Questions
Why do my label values differ from the reference table? Most published values are averages for raw sprouts from a particular database, while your bag reflects one crop grown under specific conditions. Drying, draining, and packaging differences also change the numbers. The dropdown presets are meant as quick defaults, not as nutritional guarantees.
Does cooking change the protein percentage? Cooking drives off water, so the same protein weighs less total — meaning protein per 100 g goes up even though the absolute protein in the sprouts is unchanged. Track the state you actually eat: weigh cooked sprouts if you eat them cooked.
Are sprouted legumes a good source of plant protein? They are a helpful contributor, especially the denser varieties like lentil, chickpea, and soybean sprouts. Remember they are mostly water, so pair them with other protein sources for a complete meal. For authoritative nutrient data, see the USDA FoodData Central database.