Jam is mostly fruit and sugar, so protein isn't its headline nutrient — but if you're tracking macros or following a higher-protein diet, every gram matters, especially when you spread jam on toast, stir it into yogurt, or use it in baking. This calculator works out exactly how much protein is in your serving based on the per-100g value printed on the jar.
Enter your portion size in grams, tablespoons, teaspoons, or ounces, plus the protein per 100g from the nutrition label. The tool instantly converts your serving to grams, applies the per-100g protein value, and shows the protein amount with a useful per-tablespoon and per-teaspoon reference. It is handy for meal prep, macro logging, or checking whether a “protein jam” is really worth the price.
Use the typical jam type presets as a starting point, then adjust to the exact value on your own jar for the most accurate result.
🍓 Jam Protein Per 100g Calculator
Estimate the protein in any jam serving from the per-100g value on your jar.
How to Use This Tool
Start by entering the amount of jam you plan to eat in the serving-size field. Choose the unit from the dropdown — grams gives the most precise result, but if you scoop by spoon, tablespoons and teaspoons are handy approximations. Next, enter the protein value from your jar's nutrition label. European labels normally show protein per 100 g; US labels often show it per serving, so if the label says “0 g protein” per tablespoon, check the small print or calculate the per-100g value before using this tool.
After you press Calculate, the tool shows your serving weight in grams, the protein per 100 g you entered, and the exact protein in your portion. It also gives a per-tablespoon and per-teaspoon reference so you can quickly estimate future servings without weighing them.
How the Calculation Works
This tool uses a two-step method. First, it converts your chosen serving unit into grams. The built-in conversions are:
- 1 tablespoon of jam ≈ 20 g
- 1 teaspoon of jam ≈ 6.7 g
- 1 ounce = 28.35 g
Then it applies the label's protein density:
For example, a 40 g serving of jam with 0.4 g protein per 100 g contains 40 × 0.4 ÷ 100 = 0.16 g of protein.
Because jam is mostly sugar and fruit pectin, protein values are tiny — often under 1 g per 100 g. The calculator keeps two decimal places so you can log even trace amounts accurately if you want to.
Worked Examples
If 1 tbsp ≈ 20 g, two tablespoons is 40 g. With a label value of 0.4 g/100 g, protein = 40 × 0.4 ÷ 100 = 0.16 g.
Brands marketed as high-protein can contain around 0.8 g/100 g. Protein = 15 × 0.8 ÷ 100 = 0.12 g — still modest, but roughly double regular jam.
One ounce is 28.35 g. At 0.6 g/100 g, protein = 28.35 × 0.6 ÷ 100 ≈ 0.17 g.
Typical Protein Values in Jam
The values below are general approximations from commercial jam products. Always use the figure on your specific jar.
| Jam type | Typical protein (g per 100 g) |
|---|---|
| Strawberry jam | 0.3 – 0.5 |
| Raspberry jam | 0.4 – 0.6 |
| Apricot jam | 0.5 – 0.8 |
| Blueberry jam | 0.3 – 0.6 |
| Mixed berry jam | 0.4 – 0.7 |
| Marmalade | 0.3 – 0.5 |
| Sugar-free / high-fruit jam | 0.5 – 1.0 |
| Protein-enriched “protein jam” | 2 – 10 |
For brand-level data, search the product in USDA FoodData Central, which lists protein, sugar, and other nutrients for thousands of foods and branded products.
Tips for Accurate Macro Tracking
Frequently Asked Questions
Does jam actually contain protein?
Yes, but only a little. Fruit contributes natural protein, and commercial jam usually ends up around 0.2–1.0 g per 100 g. A typical 20 g tablespoon therefore provides roughly 0.04–0.2 g of protein, which is negligible for most people but still worth logging if you're meticulous.
Why does my jam label say 0 grams of protein?
Many nutrition labels round values below 0.5 g per serving down to zero. If your serving is a tablespoon (about 20 g), the product could still contain up to 0.5 g protein per 20 g, which equals 2.5 g per 100 g on paper — though most real jams are far lower. Check the per-100g column if the label has one, or contact the manufacturer.
Can this calculator help with homemade jam?
Yes. Calculate the total protein of all fruit, sweetener, pectin, and other additions, divide by the total finished weight in grams, and multiply by 100 to get protein per 100 g. Enter that number into the calculator along with your serving size.
Are “protein jams” worth using?
Some brands fortify jam with whey or plant protein to reach 3–10 g per 100 g. That can fit a high-protein diet, but check sugar and calorie content too. A 20 g serving of a 5 g/100 g protein jam gives about 1 g of protein — useful, but not a substitute for real protein-rich foods like Greek yogurt, eggs, or nut butter.