NutriLens AI
How to track calories in homemade food
Home cooking rarely comes with a nutrition label. For a repeatable meal, build an estimate from the ingredients and divide it by the portions actually served. A photo scan can help you log the finished plate, but it does not replace the details you already know from cooking.
Begin with the recipe you really made
List the quantities of the main ingredients, including oil, butter, sauces, drinks used in cooking, and toppings. Use package labels or reliable ingredient information where available. If you changed the recipe, record what went into this batch rather than copying a generic version.
Add the recipe, then divide by portions
As a purely illustrative arithmetic example, suppose the ingredients in one batch add up to an estimated 900 calories and you split the finished dish evenly into three servings. That is about 300 estimated calories per serving. These numbers are not nutrition values for a real recipe: your actual total depends on the specific ingredients, amounts, and serving sizes.
Handle uneven servings and leftovers
If one plate is larger than the others, dividing equally will undercount one serving and overcount another. Weigh the finished dish and the portion if that level of precision matters to you. If you eat only part of a serving or return for seconds, log the quantity you ate rather than the number of bowls prepared.
Use a photo for the plate in front of you
Photograph your meal in NutriLens to get an estimated calorie and macro breakdown, then compare it with the recipe information you know. Check that the scan recognizes the ingredients and approximate portion; correct available details before saving. Hidden oil or sauce will not necessarily be visible in the photo.
When the meal changes tomorrow
A second batch with extra cheese, a different oil amount, or more servings is not identical to the first. Recheck the ingredient totals or adjust your estimate. For a store-bought component, its label can be more informative than guessing from its appearance.
Keep your log useful, not perfect
Write down enough detail to make your future entries comparable. If the amount of oil or portion size is unknown, note that your result is an estimate. People managing a medical diet should check decisions with their care team; a photo estimate cannot verify nutrient limits.
Use NutriLens
- Open the food and barcode scanner Account required. Scan a meal, drink, or packaged-food barcode in the app.
- View your nutrition dashboard Account required. See your saved nutrition entries and daily overview.
- See plans and pricing Public pricing information on the NutriLens home page.
Explore NutriLens tools
- AI Food Scanner Get an estimated nutrition breakdown from a food photo.
- AI Calorie Counter Track meal calories from a photo without searching a database.
- Nutrition Tracker Review daily calories and macros in one dashboard.
- How Accurate Are AI Calorie Counters? Understand the limits of photo-based calorie estimates and how to check them.
Frequently asked questions
Should I count oil used in cooking?
Yes, when you know how much was used or absorbed. Cooking fat can change a meal's total even when it is not visible in the finished dish.
How do I log a casserole or one-pot meal?
Estimate the whole recipe from its ingredients, then divide by the portions actually served. For uneven portions, use weights or an informed estimate rather than assuming every scoop is identical.
Can I just photograph homemade food?
You can use a scan as a starting point, but a photograph may miss oils, sauces, and the actual serving amount. Compare the result with your recipe when that information is available.