Stir Fat Per 100g Calculator
Stir-frying is one of the fastest ways to get dinner on the table, but the fat content can vary a lot depending on how much oil ends up in the wok. This calculator helps you estimate the fat content of a completed stir-fry per 100 grams — the same basis used on nutrition labels — so you can log your meal accurately in a diet or calorie-tracking app.
Enter the oil you added, any fat contributed by ingredients like meat, nuts, or sauces, and the final cooked weight of the whole dish. The tool returns fat per 100 grams, total fat, fat per serving, and the calories coming from fat. It’s designed for home cooks, meal preppers, and anyone who wants a reliable estimate without breaking out a lab.
🥘 Stir-Fry Fat Per 100g Calculator
Fat from meat, nuts, coconut milk, sauces, or dairy already in the dish.
How to Use This Tool
Start by measuring the oil you add to the wok or skillet. Choose the oil type from the dropdown — the calculator uses a slightly different fat value per tablespoon for butter and ghee compared with liquid cooking oils. Next, enter the oil amount and select the unit: tablespoons, teaspoons, milliliters, or grams. If you weigh oil directly on a scale, choose grams for the most precise result.
Then enter any additional fat contributed by the ingredients themselves. Meaty chicken thighs, beef with visible marbling, cashews, peanuts, sesame seeds, coconut milk, and thick sauces can all add several grams of fat that aren’t from the oil. Estimating this value doesn’t need to be perfect — a reasonable approximation is far better than ignoring it altogether.
Finally, weigh the finished stir-fry in its serving container and enter the total cooked weight in grams, then set the number of servings. Click Calculate to see fat per 100 g, total fat, fat per serving, and calories from fat per 100 g.
How the Calculation Works
The calculator first converts your oil measurement into a fat mass. For tablespoons, it multiplies the amount by the fat value for the selected oil. For teaspoons, it divides by 3; for milliliters, it divides by 15. If you enter grams, it applies the fat ratio of the selected ingredient — about 0.81 for butter, 0.99 for ghee, and 1.0 for most liquid oils.
Total fat equals the oil fat plus the other fat you entered. The calculator then divides total fat by the final cooked weight and multiplies by 100 to express the result per 100 grams, which matches the format used on nutrition labels around the world. Calories from fat are estimated using the standard 9 kilocalories per gram of fat.
Worked Example
Let’s work through a typical chicken and vegetable stir-fry. You add 1.5 tablespoons of vegetable oil and about 5 g of fat from chicken skin and cashews. The finished dish weighs 520 g after cooking, and you plan to split it into two servings.
Step 2: Total fat = 20.4 + 5 = 25.4 g
Step 3: Fat per 100 g = 25.4 ÷ 520 × 100 = 4.9 g
Step 4: Fat per serving = 25.4 ÷ 2 = 12.7 g
Step 5: Calories from fat per 100 g = 4.9 × 9 = 44 kcal
Each 100 g portion of this stir-fry contains about 4.9 g of fat, and each half-batch serving contains about 12.7 g. If you wanted a lower-fat version, you could cut the oil to 1 tablespoon, which would reduce total fat to roughly 18.6 g and fat per 100 g to about 3.6 g.
Standard Fat Values for Cooking Oils
The table below lists the approximate fat content per tablespoon for common stir-fry fats. Values are based on typical USDA FoodData Central entries and are suitable for everyday tracking.
| Oil / fat | Fat per tablespoon |
|---|---|
| Vegetable oil | 13.6 g |
| Olive oil | 13.5 g |
| Peanut oil | 13.6 g |
| Sesame oil | 13.6 g |
| Canola oil | 13.6 g |
| Coconut oil | 13.6 g |
| Butter | 11.5 g |
| Ghee | 12.7 g |
| Lard | 12.8 g |
For more exact numbers, check the nutrition label on your specific product or search the USDA FoodData Central database. The values in the calculator are intentionally simple so you can cook without needing to stop and look things up.
Tips for Accurate Tracking
- Weigh oil by mass. Put the oil bottle on a scale, tare it, pour, then read the negative change. Select “grams” in the unit dropdown and the calculator treats the mass directly.
- Keep leftovers explicit. If you pour oil or fatty sauce out of the pan before serving, that fat isn’t actually eaten. Your final cooked weight should reflect what you actually serve.
- Account for moisture loss. The total cooked weight matters more than raw ingredient weight, because water evaporates during stir-frying and concentrates the fat per 100 g.
- Estimate other fats generously but honestly. If you’re unsure whether chicken thighs have 3 g or 5 g of fat per serving, choose a middle value and stay consistent with your logging.
- Compare with restaurant data. Many chain restaurants publish nutrition PDFs; use this calculator to see how your homemade version stacks up. For tossed salads where dressing is the main fat source, this salad fat calculator follows a similar approach.
Frequently Asked Questions
Why is fat per 100 g the standard on labels? Nutrition labels use per-100 g values so products can be compared regardless of serving size. Using the same basis makes it easy to log stir-fry in apps such as MyFitnessPal or Cronometer.
Does stir-frying remove fat? Not in a meaningful way. Fat doesn’t evaporate; it stays in the dish unless it’s poured off. What changes is the dish’s weight due to moisture loss, so fat concentration can rise after cooking.
What if I use a nonstick pan and no oil? Enter 0 for the oil amount. The calculator will still account for any fat from the ingredients themselves, which is especially useful for vegetable-heavy stir-fries.
Are all fats 9 kcal per gram? Yes, for practical purposes all dietary fats provide about 9 kcal per gram, whether from oil, butter, meat, or nuts. If you’re comparing butter-based dishes, our butter per 100 g calculator can help you translate the numbers.