CalorieWise AI
FREE NUTRITION CALCULATORS

Understand your calories.
Make informed choices.

Estimate daily calorie needs, energy expenditure, macros and common food calories with simple, browser-based tools.

✓ Free to use✓ Mobile friendly✓ No account required
YOUR NUTRITION TOOLKIT
10 tools
One simple place to start

Use estimates as a guide, not a diagnosis or a substitute for professional advice.

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Calorie & nutrition calculators

Enter your details to get an estimate. Calculations happen in your browser.

1. Daily Calorie Calculator

Estimate daily calories for maintenance, weight loss or gain.

Your estimate will appear here.

2. BMR Calculator

Estimate resting energy needs using the Mifflin–St Jeor equation.

Your estimate will appear here.

3. TDEE Calculator

Estimate total daily energy expenditure from BMR and activity.

Your estimate will appear here.

4. Food Calorie Calculator

Estimate calories for common foods using approximate reference values.

Choose a food and serving amount.

5. Protein Calculator

Estimate a daily protein range from body weight and selected activity.

Your estimate will appear here.

6. Carbohydrate Calculator

Estimate carbohydrate grams from a calorie target and chosen percentage.

Your estimate will appear here.

7. Fat Calculator

Estimate fat grams from a calorie target and chosen percentage.

Your estimate will appear here.

8. Macro Calculator

Split a calorie target into protein, carbohydrate and fat estimates.

Percentages should total 100%.

9. Meal Calorie Calculator

Add calories from several foods to estimate a meal total.

Your meal total will appear here.

10. Energy Needs & Goal Planner

Apply a chosen adjustment to a maintenance calorie estimate.

Your estimate will appear here.

Common food calorie guide

Approximate values only. Recipes, portions and preparation change nutrition.

Cooked white rice~130 kcal / 100 g
Chicken breast, cooked~165 kcal / 100 g
Boiled egg~78 kcal / large egg
Banana~105 kcal / medium
Apple~52 kcal / 100 g
Cooked lentils~116 kcal / 100 g

AI Nutrition Assistant

Try a guided nutrition question.

Ask about everyday nutrition

This starter version provides general educational guidance using simple rules. It is not connected to a generative AI service. A real AI assistant needs a secure backend and an AI API key; never put a secret API key in public website JavaScript.

Your general guidance will appear here.

About CalorieWise AI

Simple tools for learning about calories and nutrition.

CalorieWise AI offers free estimates for daily energy needs, food calories and macronutrients. The calculators use common equations and approximate food reference values. They are intended for general education and planning.

How are calorie needs estimated?

The daily calorie and BMR tools use the Mifflin–St Jeor equation as an estimate of resting energy expenditure. TDEE is estimated by multiplying BMR by an activity factor. Individual energy needs can differ.

Health disclaimer

CalorieWise AI is an educational tool, not medical advice. Estimates are not suitable for diagnosing or treating a condition. Speak with a qualified healthcare professional or registered dietitian for personalized advice, especially if you are under 18, pregnant, breastfeeding, have a medical condition, or have a history of disordered eating. Avoid using calculator results as a strict diet prescription.

Contact

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