Packaged food has a label; the stir-fry you just made doesn't. Estimating nutrition for homemade dishes is doable — as long as you understand it's an estimate, not a lab result.
How estimation works
Add up the nutrition of each ingredient from a food database, then divide by the number of servings. The math is simple; the accuracy depends entirely on the inputs.
What affects accuracy
- Portion sizes: “a handful” or “a drizzle” introduces real variance.
- Servings: per-serving numbers are only as right as your serving count.
- Cooking losses: some fat renders off; some water cooks away.
- Brand differences: oils, sauces, and cuts vary.
Read estimates as ranges
Treat an estimate as “about 500 kcal,” not “exactly 512.” It's perfect for tracking trends and comparing dishes, less so for medical precision. Pair it with making a recipe healthier when you want to adjust.
CookBuddy turns any recipe link or YouTube cooking video into a clean, cookable recipe — then helps you plan, shop, and cook hands-free. It's free to start. It estimates per-serving calories and macros automatically when you save a recipe, and flags them as estimates.
For better accuracy on the dishes you eat most, weigh the main ingredients once and reuse those numbers — small effort, much tighter estimates.



