By FoodIdentifier Nutrition Team · March 5, 2026 · 10 min read
The Ultimate Calories in Foods Database (2026): 100+ Foods With Calories, Macros & Nutrition Guide
Understanding calories in foods is one of the most important steps for improving your diet, managing weight, and maintaining overall health. Every day, millions of people search for answers like calories in cooked rice 1 cup, calories in chicken breast 100g, or calories in a banana.
This guide gives you a complete calorie reference database for everyday foods — organized by food group — plus practical tips for tracking calories accurately using AI.
⚡ Quick Answer
Calories vary dramatically by food group. A cup of cooked rice is ~205 kcal. A chicken breast (100g) is ~165 kcal. A medium banana is ~105 kcal. Use the tables below for a full reference, or scan any food photo instantly with FoodIdentifier AI.
📋 Table of Contents
- What Are Calories in Foods
- Why Knowing Calories Matters
- How Calories Are Calculated
- Calories in Protein Foods
- Calories in Carbohydrate Foods
- Calories in Fruits
- Calories in Vegetables
- Calories in Dairy Products
- Calories in Healthy Fats
- How AI Food Scanners Estimate Calories
- How to Identify Calories Instantly With AI
- Tips for Accurate Calorie Tracking
- Frequently Asked Questions
1. What Are Calories in Foods?
Calories measure the amount of energy food provides to your body. Your body uses calories to perform essential functions like breathing, digestion, circulation, muscle movement, and brain activity. Every food contains calories, but the amount varies depending on its nutrient composition.
The three main macronutrients that supply calories are:
| Nutrient | Calories per Gram |
|---|---|
| Carbohydrates | 4 calories |
| Protein | 4 calories |
| Fat | 9 calories |
Foods higher in fat typically contain more calories. Avocado, for instance, is calorie-dense due to healthy fats, while spinach is nearly calorie-free due to its high water and fiber content.
2. Why Knowing Calories Matters
Weight Loss
To lose weight, you need to consume fewer calories than your body burns — a concept called a calorie deficit.
Weight Maintenance
Understanding daily calorie intake helps maintain stable body weight without restrictive dieting.
Muscle Growth
Protein intake combined with sufficient calories supports muscle development and recovery.
Portion Awareness
Many people underestimate calories in foods like oils, nuts, and sauces. A single tablespoon of peanut butter is ~95 kcal.
3. How Calories Are Calculated
Nutrition scientists calculate calories using bomb calorimetry — a method that measures the energy released when food is burned in a controlled environment. For practical nutrition, macronutrient averages (Atwater factors) are used:
- Carbohydrates: 4 kcal/g
- Protein: 4 kcal/g
- Fat: 9 kcal/g
These values form the foundation of every food label and nutrition database in use today.
4. Calories in Common Protein Foods
Protein helps repair tissues, maintain muscles, and support metabolism. Protein-rich foods are frequently recommended for weight management because they promote satiety and preserve lean mass.
| Food | Calories |
|---|---|
| Chicken breast cooked 100g | 165 kcal |
| Salmon 6 oz cooked | 367 kcal |
| Tuna canned water | 190 kcal |
| Boiled egg large | 72 kcal |
| Scrambled eggs 2 eggs | 180 kcal |
| Greek yogurt plain | 130 kcal |
💡 Tip: A 100g chicken breast provides ~165 kcal and 31g of protein — one of the best calorie-to-protein ratios of any whole food.
Calculate your ideal daily protein target with our free Protein Calculator.
5. Calories in Common Carbohydrate Foods
Carbohydrates are the body's preferred energy source. Calorie content varies widely depending on portion size, water content, and cooking method.
| Food | Calories |
|---|---|
| Cooked rice 1 cup | 205 kcal |
| Brown rice cooked | 216 kcal |
| Pasta cooked 1 cup | 220 kcal |
| White bread slice | 80 kcal |
| Oatmeal with milk | 158 kcal |
Note: All values are for cooked portions unless otherwise specified. Raw grains weigh significantly less and absorb water during cooking, affecting per-cup calorie density.
6. Calories in Fruits
Fruits contain natural sugars (fructose) but also provide vitamins, minerals, and dietary fiber. They are generally considered nutrient-dense and beneficial for balanced diets.
| Food | Calories |
|---|---|
| Banana medium size | 105 kcal |
| Apple medium | 95 kcal |
| Avocado half | 120 kcal |
| Orange | 62 kcal |
| Strawberries cup | 50 kcal |
💡 The banana (105 kcal) is one of the most searched calorie queries globally — quick energy, high potassium, and portable.
7. Calories in Vegetables
Vegetables contain far fewer calories than most foods because they are high in water and fiber. They are excellent for increasing meal volume and satiety without adding excessive calories.
| Food | Calories |
|---|---|
| Broccoli steamed | 55 kcal |
| Spinach | 7 kcal |
| Carrots | 52 kcal |
| Potato baked medium | 161 kcal |
| Cucumber slices | 16 kcal |
💡 Adding a full cup of spinach to any meal adds only 7 calories — but provides iron, magnesium, and vitamins A, C, and K.
8. Calories in Dairy Products
Dairy foods are rich in calcium, protein, and fat-soluble vitamins. Calorie content varies significantly depending on fat percentage.
| Food | Calories |
|---|---|
| Whole milk cup | 150 kcal |
| Cheddar cheese slice | 113 kcal |
| Greek yogurt plain | 130 kcal |
| Butter tablespoon | 102 kcal |
9. Calories in Healthy Fats
Healthy fats support hormone balance, brain health, and absorption of fat-soluble vitamins. However, because fat contains 9 kcal per gram — more than double carbs or protein — small portions carry significant calories.
| Food | Calories |
|---|---|
| Olive oil tablespoon | 119 kcal |
| Peanut butter tablespoon | 95 kcal |
| Avocado half | 120 kcal |
| Almonds 1 oz | 164 kcal |
💡 A single tablespoon of olive oil (119 kcal) is easy to undercount. Tracking cooking oils is one of the most common sources of unaccounted calories in home cooking.
10. How AI Food Scanners Estimate Calories
Modern nutrition apps use artificial intelligence and computer vision to estimate calories from food photos. The process typically works in three steps:
Image Recognition
AI identifies food items on the plate — recognizing individual ingredients, colors, textures, and shapes.
Portion Size Estimation
The model estimates portion sizes using reference objects in the image and depth analysis.
Nutrition Database Matching
Identified foods are matched to a nutrition database to calculate calories and macros instantly.
Tools like FoodIdentifier AI Food Scanner help users track meals without manually searching every ingredient — making consistent tracking realistic for everyday life.
11. How to Instantly Identify Calories Using AI
Using FoodIdentifier is simple and requires no account or app download.
Take a photo of your meal
Clear, well-lit overhead photos give the best results. Include all components — main dish, sides, and visible sauces.
Upload to FoodIdentifier
Go to FoodIdentifier.com and upload your photo. No sign-up required.
AI analyzes your food
The AI identifies ingredients, estimates portion sizes, and matches them to the nutrition database.
Receive instant nutrition data
Get calories, protein, carbs, fat, and fiber estimates — all from a single photo within seconds.
📸 Scan Your Food Now — Free
Upload any food photo and instantly receive calories, macros, and nutrition insights. No sign-up. No app needed.
Try FoodIdentifier Free →12. Tips for Accurate Calorie Tracking
- Measure portions when possible: Kitchen scales give more accurate results than visual estimates, especially for dense foods like nuts and cheese.
- Include cooking oils and sauces: These are frequently missed and can add 200–400 calories to a meal invisibly.
- Scan meals before eating: Knowing the calorie count upfront lets you make conscious decisions about portion size.
- Compare estimates with nutrition labels: Use packaged food labels as a reference point to calibrate your visual estimates.
- Track consistently: Even rough tracking for 2–3 weeks builds intuitive awareness of portion sizes and calorie density.
13. Frequently Asked Questions
How accurate are calorie estimates in foods?+
Most estimates are averages based on nutrition databases and may vary slightly depending on preparation methods and portion sizes.
Do cooked foods contain different calories than raw foods?+
Cooking can change water content and portion density. For example, cooked chicken weighs less than raw due to moisture loss, so calories per 100g are higher cooked.
Can AI estimate calories from food photos?+
Yes. AI scanners use image recognition and nutrition databases to estimate calories and macros from a single photo within seconds.
What foods contain the highest calories?+
Foods high in fats and sugars typically contain the most calories — oils, nuts, nut butters, cheese, and fried foods are among the most calorie-dense.
How many calories should I eat per day?+
Daily calorie needs vary by age, sex, activity level, and goals. Most adults need 1,600–2,500 calories. Use our free TDEE Calculator to find your personal target.
Is scanning food easier than manual calorie tracking?+
For most people, yes. AI food scanning eliminates the need to manually search every ingredient and is especially useful for mixed meals and restaurant food.
Track Calories From Any Food Instantly
Upload a photo of any food and instantly discover calories, macros, and a full nutrition breakdown — with the FoodIdentifier AI Food Scanner. Free, no sign-up required.
🔗 Related Tools & Guides
FoodIdentifier Nutrition Team
Experts in AI nutrition technology and digital health tools. Our content is based on publicly available nutrition databases and reviewed for accuracy.
⚕️ Disclaimer
This article is for informational purposes only and should not replace professional medical or nutritional advice. Calorie values are estimates based on nutrition databases and may vary by preparation method. Consult a registered dietitian for personalized guidance.
📚 Sources
Last updated: March 2026 · Author: FoodIdentifier Nutrition Team