Goal Weight Calorie Needs Calculator

Enter your goal weight, height, age, gender, and activity level to calculate your maintenance calories, BMR, and suggested deficit or surplus targets.

Created by Luis GonzalezLast updated: May 9, 2026

How to Use This Calculator

1
Input Your Goal Weight
Enter the body weight in pounds that you are aiming to achieve and maintain. This is the foundation of your calorie targets.
2
Provide Your Height
Enter your height in inches. For example, if you are 5 feet 10 inches tall, you would enter 70.
3
Specify Your Age
Enter your current age in years. Age is a crucial factor in metabolic rate calculations.
4
Select Your Gender
Choose whether you are Male or Female, as this significantly impacts your Basal Metabolic Rate (BMR) calculation.
5
Define Your Activity Level
Select the option that best describes your typical weekly physical activity, from Sedentary to Very Active.
6
Review Your Calorie Targets
Once all fields are entered, the calculator will display your estimated maintenance calories, BMR, and deficit/surplus targets at your goal weight.

Example Calculation

A 35-year-old man who is 5'10" tall wants to calculate his calorie needs to maintain a goal weight of 175 lbs with a moderate activity level.

Goal Weight (lbs)

175 lbs

Height (in)

70 in

Age (yrs)

35 yrs

Gender

Male

Activity Level

Moderate

Results

2689 kcal/day

Tips

Adjust for Activity Changes

If your activity level changes (e.g., starting a new exercise routine or becoming less active), re-run the calculator. A change from moderate to active, for instance, could increase your daily calorie needs by 200-300 kcal.

Prioritize Protein for Muscle Retention

When aiming for a goal weight, especially if it involves fat loss, target a protein intake of 0.7-1.0 grams per pound of your *goal* body weight. For a 175 lb goal, this means 122-175g of protein daily to preserve muscle mass.

Monitor Progress and Fine-Tune

Use the initial calorie targets as a starting point. Track your actual weight changes over 2-4 weeks. If you're not seeing the expected progress (e.g., 0.5-1 lb loss per week for a 500 kcal deficit), adjust your intake by 100-200 calories and re-evaluate.

Estimating Your Calorie Needs for Long-Term Weight Management

Accurately estimating your daily calorie needs at a target body weight is fundamental for sustainable health and fitness. This Goal Weight Calorie Needs Calculator provides precise figures for your Basal Metabolic Rate (BMR), Total Daily Energy Expenditure (TDEE), and tailored deficit or surplus targets using the well-regarded Mifflin-St Jeor formula. Whether you're aiming to maintain a healthy weight, achieve fat loss, or plan a lean bulk, understanding these caloric benchmarks, typically ranging from 1,800 to 3,000 kcal/day for adults, is crucial for effective nutrition planning in 2025.

The Science of Caloric Balance at Your Target Weight

Achieving and maintaining a healthy body composition hinges on understanding caloric balance and the role of macronutrients. For sustainable weight loss, a typical calorie deficit of 250-500 kcal/day is recommended, targeting a gradual loss of 0.5-1 pound per week. Within this framework, protein intake is paramount for satiety and muscle retention, with general recommendations ranging from 0.7 to 1.0 grams per pound of your goal body weight. For someone targeting 175 lbs, this translates to 122-175g of protein daily, which helps preserve lean mass while in a deficit and supports metabolic function.

How the Mifflin-St Jeor Equation Calculates Energy Expenditure

The Goal Weight Calorie Needs Calculator employs the Mifflin-St Jeor equation, a widely accepted formula for estimating your Basal Metabolic Rate (BMR). This BMR is then multiplied by an activity factor to determine your Total Daily Energy Expenditure (TDEE), representing the calories you burn daily.

Here’s the core logic:

BMR (Men) = (10 × goal weight in kg) + (6.25 × height in cm) - (5 × age in years) + 5
BMR (Women) = (10 × goal weight in kg) + (6.25 × height in cm) - (5 × age in years) - 161

TDEE = BMR × Activity Factor

Where:

goal weight in kg is your target weight converted from pounds to kilograms.
height in cm is your height converted from inches to centimeters.
age in years is your current age.
Activity Factor ranges from 1.2 (sedentary) to 1.9 (very active).

💡 Once you have your calorie targets, our Overall Diet Balance Score Calculator can help you structure your macronutrient intake to meet those goals effectively.

Calculating Calorie Needs for a 175 lb Goal

Consider a 35-year-old male, 5'10" (70 inches) tall, aiming for a goal weight of 175 lbs with a moderate activity level.

Convert to Metric:
- Goal Weight: 175 lbs × 0.453592 = 79.38 kg
- Height: 70 in × 2.54 = 177.8 cm
Calculate BMR (Male):
- BMR = (10 × 79.38) + (6.25 × 177.8) - (5 × 35) + 5
- BMR = 793.8 + 1111.25 - 175 + 5 = 1735.05 kcal/day
Apply Activity Factor:
- For moderate activity, the factor is 1.55.
- TDEE = 1735.05 × 1.55 = 2689.33 kcal/day

Therefore, this individual's estimated maintenance calories at a 175 lb goal weight with moderate activity are approximately 2689 kcal/day. A 500 kcal deficit for fat loss would put their target at 2189 kcal/day.

💡 If you're exploring specific dietary approaches like Paleo, our Paleo Macro Calculator can help you align your macronutrient ratios with your new calorie targets.

The Science of Caloric Balance at Your Target Weight

The Mifflin-St Jeor Equation: A Modern Standard

The Mifflin-St Jeor equation, published in the American Journal of Clinical Nutrition in 1990, quickly became a preferred method for estimating Basal Metabolic Rate (BMR) due to its improved accuracy compared to older formulas like the Harris-Benedict equation (developed in 1919). Researchers at the Mifflin Institute identified that modern populations often have different metabolic characteristics, leading to the development of a formula that more precisely estimates resting energy expenditure. This makes Mifflin-St Jeor a contemporary and reliable choice for clinical and fitness settings, offering a more relevant baseline for calorie calculations in today's context.

Frequently Asked Questions

What is the difference between BMR and Maintenance Calories?

Basal Metabolic Rate (BMR) is the minimum number of calories your body needs to perform basic, life-sustaining functions while at rest, such as breathing, circulation, and cell production. Maintenance calories, also known as Total Daily Energy Expenditure (TDEE), include your BMR plus the calories burned through all physical activity, including exercise, digestion, and non-exercise movement. TDEE is the number of calories you need to consume daily to maintain your current weight.

Why is goal weight used instead of current weight for calorie calculations?

Using your goal weight provides a more accurate and forward-looking estimate of your calorie needs once you reach that weight. This helps in planning for maintenance or a sustainable deficit/surplus. If you're significantly heavier or lighter than your goal, current weight calculations would reflect different metabolic demands, making it harder to plan for the long-term caloric intake required to stay at your target.

How accurate is the Mifflin-St Jeor equation for estimating calorie needs?

The Mifflin-St Jeor equation is widely considered one of the most accurate formulas for estimating Basal Metabolic Rate (BMR) for adults, generally showing better accuracy than older equations like Harris-Benedict. While no formula is 100% precise for every individual due to genetic and metabolic variations, Mifflin-St Jeor is a reliable starting point, typically within 10-15% of actual BMR for most healthy adults. It forms a robust basis for calculating total daily energy expenditure.

What is a healthy calorie deficit for sustainable weight loss?

A healthy and sustainable calorie deficit typically ranges from 250 to 500 calories per day, aiming for a gradual weight loss of 0.5 to 1 pound per week. A 500-calorie daily deficit, for instance, theoretically leads to a 3,500-calorie weekly deficit, equating to one pound of fat loss. Larger deficits can be harder to sustain, may lead to muscle loss, and could risk nutritional deficiencies, especially if consistently below 1,200 calories per day.