Daily Calorie Needs Calculator

Calculate how many calories you need per day to maintain, lose, or gain weight based on your body stats and activity.

Runs in browser
Maintain weight
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Lose weight (−500 kcal)
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Gain weight (+500 kcal)
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About Calories

TDEE = BMR × activity

1 kg of fat ≈ 7,700 kcal. A 500 kcal daily deficit leads to ~0.5 kg loss per week.

How to use?

  1. 1
    Enter your detailsFill in weight, height, age and select your gender.
  2. 2
    Choose activity levelSelect how active you are on a typical week.
  3. 3
    Read the resultCalorie targets for maintaining, losing, and gaining weight are shown.

FAQ

How many calories do I need to lose weight?
A daily deficit of 500 kcal below your TDEE leads to approximately 0.5 kg of fat loss per week. Do not go below 1200 kcal/day (women) or 1500 kcal/day (men).
What is TDEE?
TDEE (Total Daily Energy Expenditure) is the total calories you burn per day, including all physical activity. Eating at TDEE maintains your current weight.
Which formula is used?
The Mifflin-St Jeor equation is used to calculate BMR, then multiplied by the Harris-Benedict activity factor.

How Many Calories Do You Need Per Day?

Your daily calorie needs depend on your basal metabolic rate (BMR) and how active you are. This calculator uses the Mifflin-St Jeor equation — the most accurate method for most adults.

Calorie Goals

  • Maintain: Eat at your TDEE
  • Lose weight: TDEE − 500 kcal/day → ~0.5 kg/week loss
  • Gain weight: TDEE + 500 kcal/day → ~0.5 kg/week gain

Important Notes

  • These are estimates — individual metabolism varies
  • Do not go below 1200 (women) or 1500 (men) kcal/day
  • Consult a healthcare professional for personalised advice

How How Many Calories Do You Need Per Day? is calculated

Searches for How Many Calories Do You Need Per Day? usually come from people who need more than a quick number. They want to understand the method, the assumptions and how the result should be interpreted. A useful article explains the formula in plain language, shows the inputs that matter, and makes clear that the result is an estimate. This is especially important for health and finance pages, where a small difference in input can change the conclusion.

What to check before using the result

Check the date, amount, rate, unit or personal value you entered. If a local rule, tax bracket, medical reference range or legal limit applies, make sure the current regulation is being used. Online tools are helpful for planning and comparison, but they should not replace a qualified professional when the result affects medical care, contracts, loans, payroll, taxes or legal obligations.

Local search intent

People may search for “How Many Calories Do You Need Per Day? calculator”, “how to calculate How Many Calories Do You Need Per Day?”, “How Many Calories Do You Need Per Day? online” or “free How Many Calories Do You Need Per Day?”. The page should therefore answer the direct calculation first, then explain the background, examples, limitations and next steps. Keep a copy of important results and confirm them with official documents or professional advice when necessary.

Examples, assumptions and responsibility

High-intent searches need more explanation because the result may influence planning, money or wellbeing. Always note which assumptions are used: period, rate, tax rule, reference range, unit, personal value or date. Run at least one realistic example and compare it with your own records. If the result seems surprising, do not force the number to fit; review the input and ask a professional when the decision matters.

FAQ

Can this replace professional advice? No. It is an educational calculator. Why is the result an estimate? Online tools simplify real life rules and may not know every local exception. How should I save it? Keep the input values, date of calculation and output together, especially for finance and health planning.

How How Many Calories Do You Need Per Day? is calculated

Searches for How Many Calories Do You Need Per Day? usually come from people who need more than a quick number. They want to understand the method, the assumptions and how the result should be interpreted. A useful article explains the formula in plain language, shows the inputs that matter, and makes clear that the result is an estimate. This is especially important for health and finance pages, where a small difference in input can change the conclusion.

What to check before using the result

Check the date, amount, rate, unit or personal value you entered. If a local rule, tax bracket, medical reference range or legal limit applies, make sure the current regulation is being used. Online tools are helpful for planning and comparison, but they should not replace a qualified professional when the result affects medical care, contracts, loans, payroll, taxes or legal obligations.

Local search intent

People may search for “How Many Calories Do You Need Per Day? calculator”, “how to calculate How Many Calories Do You Need Per Day?”, “How Many Calories Do You Need Per Day? online” or “free How Many Calories Do You Need Per Day?”. The page should therefore answer the direct calculation first, then explain the background, examples, limitations and next steps. Keep a copy of important results and confirm them with official documents or professional advice when necessary.

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