Calculate your daily calorie target
This adult estimate uses your body measurements, activity level, and chosen weekly pace.
Formula used
Female profile BMR: (10 × weight in kg) + (6.25 × height in cm) − (5 × age) − 161
Male profile BMR: (10 × weight in kg) + (6.25 × height in cm) − (5 × age) + 5
Maintenance calories: BMR × selected activity factor
Daily deficit: weekly target in kg × 7,700 ÷ 7
Daily target: maintenance calories − daily deficit
The 7,700-calorie figure is a practical planning estimate. Human energy use changes as body weight, movement, and food intake change.
How to use this calculator
- Select metric or imperial measurements.
- Choose the formula profile and enter your age.
- Enter your current body weight and height.
- Choose the activity level that best matches most weeks.
- Select a gradual weekly fat loss pace.
- Optionally add your current intake and total fat loss goal.
- Calculate, follow the target consistently, then review average progress after two weeks.
Example data
| Profile | Age | Weight | Height | Activity | Weekly target | Estimated target |
|---|---|---|---|---|---|---|
| Female | 34 | 70 kg | 165 cm | Lightly active | 0.50 kg | About 1,375 kcal daily |
Build a Sustainable Fat Loss Plan
Fat loss needs an energy deficit over time. Your body uses energy for breathing, movement, digestion, and exercise. Food provides energy. A calorie target helps compare intake against estimated daily needs. The target is not a promise. It is a starting estimate. Real results change with sleep, stress, training, food tracking, and normal water shifts.
A gradual approach is often easier to maintain. Large cuts can increase hunger and reduce training quality. Start with a realistic weekly rate. Observe your average weight trend. Review the plan after two or three consistent weeks. Adjust slowly. A smaller change is easier to test. It also makes your data easier to understand.
Why Maintenance Calories Matter
Maintenance calories are the estimated amount needed to keep body weight stable. This calculator estimates that number from basal metabolic rate and activity. Basal metabolic rate covers basic body functions at rest. Activity adds daily movement and planned exercise. Neither estimate is exact. Your logged intake and body trend provide useful feedback over time.
Do not treat a single scale reading as a verdict. Salt, carbohydrates, digestion, and hydration can move scale weight quickly. Compare several morning weigh-ins. Use a weekly average. Also track waist measurements, gym performance, energy, and hunger. These signals create a clearer picture than one number alone.
Use a Deficit With Care
The calculator converts your chosen weekly fat loss pace into a daily energy deficit. It uses 7,700 calories per kilogram as a planning approximation. Human metabolism is more complex. The result helps with planning, not diagnosis. A slower target can suit people with demanding training, low body weight, or difficult schedules.
Keep meals satisfying. Include protein-rich foods, high-fiber plants, and foods you enjoy. Plan portions before hunger becomes intense. Keep fluids available. Regular meals can make adherence easier. Exercise supports health and strength. It should not become punishment for eating. Rest also supports consistent training and appetite control.
Adjust Using Real Progress
Follow the suggested intake for at least fourteen days. Track portions with reasonable care. Then compare your average weight against the planned direction. When progress is slower than expected, first check tracking consistency. Restaurant meals, drinks, oils, and snacks can add energy quickly. When progress is too rapid, increase calories modestly and reassess.
Medical conditions, medicines, pregnancy, breastfeeding, eating disorder history, and adolescence need individual advice. Speak with a qualified health professional before making restrictive changes. Stop and seek help for concerning symptoms. The best plan supports health, performance, and a sustainable relationship with food. Consistency beats aggressive short-term restriction.
Use the calculator again after a major activity change. New jobs, travel, injuries, and training blocks can alter energy needs. Keep the same measurement conditions whenever possible. Record results without judgment. The goal is useful feedback. A flexible plan helps you respond calmly when life becomes less predictable and routines continue shifting.
Frequently asked questions
1. Is this calorie target exact?
No. It is an estimate based on an energy equation and an activity factor. Your real maintenance level can differ. Use consistent tracking and average progress to refine the target.
2. Which energy equation does the calculator use?
It uses the Mifflin-St Jeor basal metabolic rate equation. The calculator then multiplies that estimate by your selected activity factor to estimate daily maintenance calories.
3. Why does the tool use 7,700 calories per kilogram?
It is a common planning approximation for converting a kilogram target into a daily deficit. Actual fat loss can differ because body composition, energy expenditure, and adherence change over time.
4. Should I always choose the fastest weekly target?
No. A slower target is often easier to sustain. It may support training quality, hunger management, and consistent habits. Choose a pace you can follow without extreme restriction.
5. Why does the result use a planning floor?
The calculator raises an extremely low estimate to a general planning floor. This avoids presenting a very restrictive number as a routine target. Individual medical guidance may differ.
6. How should I select an activity level?
Choose the option that reflects most weeks, not your hardest day. Include work movement, daily walking, and planned exercise. Update the setting after a lasting activity change.
7. Can I enter my current daily calories?
Yes. It is optional. The result compares your entered intake with the estimated target. This can help you plan one manageable adjustment instead of making many changes at once.
8. Why might scale weight change quickly?
Water, carbohydrates, sodium, digestion, and hormones can change scale weight quickly. Compare weekly averages under similar conditions before deciding whether to change your calorie target.
9. Can I eat more on training days?
Some people distribute weekly calories differently across training and rest days. Keep the weekly average aligned with your plan. Avoid using exercise as a reason for uncontrolled compensatory eating.
10. Who should seek individual advice first?
Children, teenagers, pregnant or breastfeeding people, and anyone with medical conditions or an eating disorder history should seek tailored guidance before using calorie restriction.
11. When should I adjust my calorie target?
Wait for at least two consistent weeks when possible. Review average body weight, food logging quality, energy, hunger, and training. Then make a small adjustment and observe again.
This calculator offers general educational estimates for adults. It does not diagnose conditions or replace care from a qualified health professional.