Free Nutrition Calculator: Daily Calories, BMI, Protein & Food Calories
Free Nutrition Calculator: Daily Calories, BMI, Protein & Food Calories
Want to understand your daily calorie needs, body mass index (BMI), protein requirements, and the nutrition in your everyday foods? Our free NutriWise Nutrition Calculator brings these useful estimates together in one simple tool.
Whether your goal is to maintain your weight, understand your food intake, or learn more about balanced nutrition, this calculator can help you get started.
What Is a Nutrition Calculator?
A nutrition calculator estimates nutritional information using details such as age, height, weight, activity level, and food serving sizes. It can help you better understand your daily energy needs and the nutrients in common foods.
Calculate Your Daily Calories
Your daily calorie needs depend on several factors, including age, body size, sex used by the calculation equation, physical activity, and personal goals.
Our calculator estimates daily calories for weight maintenance, gradual weight loss, or gradual weight gain. These figures are estimates rather than exact prescriptions.
Calculate Your BMI
Body mass index (BMI) is calculated using weight and height. For adults, it is commonly used as a preliminary screening measure.
BMI does not directly measure body fat and cannot tell you everything about your health. Interpret the result alongside other relevant health information.
Estimate Your Daily Protein Needs
Protein supports muscle maintenance and repair and is an important part of a balanced diet. Individual protein needs vary according to age, activity, health status, and other factors.
The calculator provides a broad general estimate for healthy adults. If you have kidney disease or another medical condition, ask a qualified healthcare professional about an appropriate protein intake.
Check Calories and Macros in Food
Use the food calculator to estimate the calories, protein, carbohydrates, and fat in selected foods. Choose a food, enter its serving size in grams, and add other foods to calculate an approximate total.
Food values can vary according to the brand, ingredients, preparation method, and cooking oil used. The estimates are intended for general educational use.
How to Use the Free Nutrition Calculator
Enter your age, height, and weight.
Select the relevant equation setting and your activity level.
Choose your goal and calculate your estimated daily calories and BMI.
Review the general protein estimate.
In the food calculator, select foods and enter serving sizes.
Calculate the approximate calories and macronutrients for your selected foods.
Frequently Asked Questions
Is this nutrition calculator free?
Yes. The calculator is designed as a free educational tool.
Are the calorie results exact?
No. Calorie requirements vary between individuals, and equations provide estimates rather than exact measurements.
Can this calculator help me lose weight?
It can help you understand estimated energy needs. Safe and sustainable weight management also depends on food quality, physical activity, sleep, health conditions, and other personal factors.
Is BMI a complete measure of health?
No. BMI is a screening measure and should not be used on its own to assess a person's overall health.
Can people with kidney disease use the protein calculator?
People with kidney disease may need individualized protein and nutrition advice. They should consult their treating clinician or registered dietitian rather than relying on a general calculator.
Health Disclaimer
This calculator is for educational and informational purposes only. It does not diagnose, treat, or prevent any disease and does not replace professional medical advice. Consult a qualified healthcare professional before making significant dietary changes, especially if you have an existing medical condition.
Explore your nutrition estimates, learn about your food choices, and use the results as a starting point for informed conversations about your health.
Your nutrition, made simpler.
Calculate estimated daily calories, BMI, protein needs and the nutrition in everyday foods — all in one place.
Your daily nutrition estimates
Enter your details to estimate calories, BMI and protein together.
These are general estimates, not a diagnosis or personalized medical advice. BMI is a screening measure and does not directly measure body fat or health. If you have kidney, liver, eating-disorder or other medical concerns, consult a qualified clinician or dietitian before changing your diet.
Food calories & macronutrients
Select foods and serving sizes to estimate calories, protein, carbohydrates and fat.
Nutrition values are approximate averages per 100 g. Preparation, brands and added oil can change the results.
Estimated meal total
Choose foods and serving sizes to calculate a total.
