Food calorie calculator for everyday meals.
A food calorie calculator estimates meal energy from ingredients and quantities. Describe your meal in English or take a photo in the app, then review the ingredient breakdown, gram weights and sources. Reliable matches use USDA nutrition; fallback estimates are labelled. Try without an account.
Free during beta. No credit card required.
Calculate calories in your meal
Choose an example or describe your meal, then calculate.
- Write a sentenceAI breaks your meal into ingredients
- Take a photoRecognises food on your plate
- Enter the numbers yourselfNo AI needed if you know the values
- Edit each lineAdjust every quantity and calorie value
Free to try without an account. Analysis uses USDA matches when available; unmatched foods use labelled estimates. Expand ingredient details to see each source.
How many calories are in an everyday meal?
These examples use the exact ingredient weights shown and energy from our local USDA FoodData Central import. They are examples, not suggested meal sizes or a typical range for everyone. Weights are edible portions; cooked foods are weighed after cooking. Added sauces and ingredients are not included unless listed. Describe your own meal above and review the quantities.
| Meal | Ingredients and weights | Kcal |
|---|---|---|
| Breakfast | 50 g dry oats, 200 g skim milk and 150 g apple | 336 |
| Breakfast | 200 g whole-milk yoghurt, 100 g banana and 20 g almonds | 327 |
| Lunch | 100 g hard-boiled egg and 80 g whole-wheat bread | 357 |
| Lunch | 120 g roasted chicken breast and 150 g cooked brown rice | 382 |
| Lunch | 150 g cooked lentils and 80 g whole-wheat bread | 376 |
| Lunch | 150 g cooked chickpeas, 100 g cooked broccoli and 10 g olive oil | 369 |
| Dinner | 150 g roasted chicken breast, 200 g boiled potato and 100 g broccoli | 454 |
| Dinner | 150 g roasted chicken thigh without skin and 200 g cooked brown rice | 514 |
| Dinner | 150 g cooked black beans, 150 g cooked brown rice and 10 g olive oil | 471 |
| Dinner | 150 g broiled lean pork tenderloin and 250 g boiled potato | 496 |
| Dinner | 150 g cooked lentils, 200 g boiled potato and 100 g cooked spinach | 369 |
| Dinner | 150 g roasted chicken breast, 200 g cooked brown rice and 10 g olive oil | 582 |
| Snack | 200 g whole-milk yoghurt and 100 g banana | 211 |
| Snack | 120 g banana and 20 g almonds | 223 |
How do you calculate calories in food?
Multiply calories per 100 g by the food weight in grams, then divide by 100. Use the correct preparation state: cooked rice and dry rice contain different amounts of water. A description or photo can reduce typing, but you still need to check the food match and quantity.
| Food | Kcal per 100 g | Weight | Result |
|---|---|---|---|
| Cooked brown rice (FDC 169704) | 123 | 220 g | 271 kcal |
| Raw skinless chicken breast (FDC 171077) | 120 | 150 g | 180 kcal |
| Olive oil (FDC 171413) | 884 | 12 g | 106 kcal |
Where do the calorie values come from?
Calorie.one loads 13,588 foods locally from USDA Foundation Foods, SR Legacy and FNDDS. AI identifies ingredients and estimates quantities; reliable matches use database nutrition. When no reliable match is available, the result is labelled as an AI estimate. Historical FRIDA entries keep their original source. Our food tables show the underlying USDA records and preparation states.
| Part of the calculation | Source |
|---|---|
| Identifying foods | AI recognition or your own selection |
| Quantity in grams | Your measurement or an editable estimate |
| Matched calories and nutrients | USDA FoodData Central |
| Food without a reliable match | Labelled AI estimate |
How does a food calculator differ from manual search?
Calorie.one supports both. With search, you choose each food and quantity. With text or photo analysis, the app proposes ingredients for you to review. Neither route guarantees a correct result: preparation state, edible weight and hidden ingredients still matter.
| Step | Food search | Text or photo analysis |
|---|---|---|
| Food selection | Choose each food | Review proposed ingredients |
| Quantity | Enter grams or a portion | Review estimated grams |
| Mixed meals | Add ingredients individually | Review the breakdown |
| Nutrition source | Shown for each food | Database or estimate |
| Saving | Confirm your values | Confirm your values |
Which foods can I describe?
Use English names and include the cut, brand, fat percentage and preparation state when known. Common foods use local USDA data; packaged products can use Open Food Facts or a photographed nutrition label. Ounces and pounds are converted to grams. A fluid ounce is a volume, so it cannot be treated as a mass without further information.
How accurate is a calorie calculator?
Accuracy depends on the food match, portion weight and recipe details. A photo cannot measure grams or reliably reveal cooking oil and hidden ingredients. We have not established a general error percentage. Weighing food and checking labels can reduce uncertainty. Review each line before saving; confirmed values are saved without another AI analysis.
What does the calculator cost?
Try a food analysis without an account. Basic tracking is free during beta, with no payment card required. An account lets you save meals and follow your chosen daily budget. Usage limits still apply.
Frequently asked questions
Is the food calorie calculator free?
Try a food analysis without an account. Basic tracking is free during beta, with no payment card required. An account lets you save meals and follow your chosen daily budget. Usage limits still apply.
How many calories are in a meal?
It depends on ingredients, quantities and cooking method. The examples here have specified weights and USDA sources. A dish name does not always mean the same calorie value.
How do I calculate food calories?
Multiply kcal per 100 g by grams and divide by 100. For example, 220 g of cooked brown rice at 123 kcal per 100 g contains about 271 kcal.
Do I need to weigh food?
You can start with estimated portions. Weighing the edible portion provides a firmer basis than a visual estimate. Distinguish raw, dry and cooked weights.
Where do the numbers come from?
Calorie.one loads 13,588 foods locally from USDA Foundation Foods, SR Legacy and FNDDS. AI identifies ingredients and estimates quantities; reliable matches use database nutrition. When no reliable match is available, the result is labelled as an AI estimate. Historical FRIDA entries keep their original source. Our food tables show the underlying USDA records and preparation states.
Can I use a photo?
Yes. Check the editable ingredient preview, especially hidden oil, dressings and portion weights. Response time varies.
Can it recognise regional dishes?
Describe regional dishes in English. The app may separate their ingredients or use a labelled estimate when no reliable match exists. Similar names do not always mean equivalent foods.
Does it work on a phone?
Yes. Use your phone browser or follow the PWA installation guide. Independent native releases are still being prepared.