Daily Calorie Needs Calculator
Estimate daily maintenance calories from age, weight, height in feet and inches, sex-based calculation formula, and activity level. The result is a planning estimate for adults, not a medical prescription.
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Daily Calorie Calculation Results
Waiting for calculation. Click Calculate Daily Calorie Needs above.
Estimated maintenance calories per day
How this calculator works
It uses the Mifflin-St Jeor equations. Male equation: 10 × weight (kg) + 6.25 × height (cm) - 5 × age + 5. Female equation: 10 × weight (kg) + 6.25 × height (cm) - 5 × age - 161. Height in feet and inches is converted using 1 inch = 2.54 cm. Resting calories are multiplied by the selected activity factor to estimate total daily energy expenditure.
The 250 kcal examples are arithmetic illustrations, not personal dietary recommendations. They do not account for individual health conditions, pregnancy, breastfeeding, medications, growth, or athletic needs. Do not use this tool to prescribe restrictive diets. Consult a qualified clinician or registered dietitian for individualized guidance.
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Frequently Asked Questions
What is a daily calorie needs calculator?
It estimates daily energy expenditure using a resting energy formula and an activity multiplier.
Which formula is used?
The Mifflin-St Jeor equation estimates resting calories using weight, height, age and the selected sex-based equation.
Can I enter my height in feet?
Yes. Enter whole feet and additional inches, such as 5 feet and 7 inches.
What does maintenance calories mean?
It is an estimate of daily calories needed to maintain current body weight under the selected activity level.
Are weight-loss and weight-gain targets guaranteed?
No. The optional adjustment examples are general estimates and may not be appropriate for everyone.
Is this calculator suitable during pregnancy?
No. Pregnancy, breastfeeding, growing children and medical conditions require individualized guidance.
How accurate are the results?
Energy needs vary between people. The calculation is a starting estimate and not a direct measurement.
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