Target Weight Calculator
Estimate the time required to reach your target weight based on your current weight, goal weight, and weekly weight change.
※ Use if necessary
Target Weight Calculator
Calculate how long it will take to reach your target weight based on your current weight, goal weight, and weekly weight change.
These results are for reference only and were developed for educational and testing purposes. You can also directly access and review the source code, including the logic and free APIs used on this page.
Calculation Results
Target Weight Calculator Guide
The Target Weight Calculator is a tool designed to estimate the time required to reach a desired weight based on current weight, target weight, and weekly weight change. This guide provides instructions for using the calculator and objective information about weight management.
How to Use the Target Weight Calculator
Follow these steps to estimate the time to your target weight:
- Enter Current Weight: Input your current body weight in pounds or kilograms.
- Enter Target Weight: Input your desired goal weight in the same unit.
- Set Weekly Weight Change: Specify the amount of weight you aim to lose or gain per week.
- Select Weight Unit: Choose between pounds (lbs) or kilograms (kg).
- Calculate: Click "Calculate Target Weight" to view the estimated time and detailed results.
Understanding Weight Management
Weight management involves adjusting body weight through diet, exercise, or lifestyle changes. Key concepts include:
Weight Loss
Reducing body weight typically requires a caloric deficit.
- A deficit of 3,500 calories generally equals 1 pound (0.45 kg) of fat loss.
- Safe weight loss is often 0.5-2 lbs (0.23-0.9 kg) per week.
- Common methods include reducing calorie intake or increasing physical activity.
Weight Gain
Increasing body weight typically requires a caloric surplus.
- A surplus of 3,500 calories generally equals 1 pound (0.45 kg) of weight gain.
- Safe weight gain is often 0.5-1 lb (0.23-0.45 kg) per week.
- Common methods include increasing calorie intake or strength training.
Maintenance
Maintaining weight requires balancing calorie intake and expenditure.
- Daily caloric needs vary by age, gender, activity level, and metabolism.
- Tools like Basal Metabolic Rate (BMR) calculators can estimate needs.
Calculation Method
The calculator uses a simple formula to estimate time to goal weight:
Formula
Weeks = Total Weight Change / Weekly Weight Change
- Total Weight Change = |Current Weight - Target Weight|
- Weekly Weight Change = User-specified value (positive for loss or gain)
- Result is rounded up to the nearest whole week.
Factors Affecting Weight Change
Several factors influence the rate of weight change:
Metabolism
The rate at which your body burns calories affects weight loss or gain.
- Higher metabolism increases calorie burn.
- Metabolism varies by age, muscle mass, and genetics.
Activity Level
Physical activity impacts calorie expenditure.
- More activity increases calorie burn, aiding weight loss.
- Sedentary lifestyles may slow progress.
Diet
Calorie intake determines surplus or deficit.
- High-calorie diets support weight gain.
- Low-calorie diets support weight loss.
Typical Weekly Weight Change Rates
Rates vary based on goals and health guidelines (general trends):
Weight Loss
- 0.5-1 lb (0.23-0.45 kg) for moderate loss
- 1-2 lbs (0.45-0.9 kg) for faster loss
Weight Gain
- 0.5-1 lb (0.23-0.45 kg) for muscle gain
- 0.1-0.5 lb (0.05-0.23 kg) for gradual gain
Final Tips for Using the Calculator
- Use accurate current and target weights for best results.
- Set realistic weekly weight change goals based on health guidelines.
- Monitor progress regularly and adjust as needed.
- Consult a healthcare professional for personalized advice.
Results are estimates and may differ from actual outcomes due to individual factors not accounted for here.