Weight Loss Calculator helps determine safe and sustainable weight loss goals, calorie needs, and timeline estimates for healthy weight management.
What is Weight Loss Calculator?
The Weight Loss Calculator provides personalized weight loss planning based on your current weight, goal weight, timeline, and activity level to ensure safe and sustainable results.
Safe Weight Loss Guidelines
- Safe Rate: 0.5-2 pounds per week
- Calorie Deficit: 500-1,000 calories below maintenance
- Weekly Goal: 1-2% of body weight
Daily Calorie Needs Formula
BMR × Activity Factor – Calorie Deficit = Daily Calories
Where BMR is calculated using Harris-Benedict equation and activity factors range from 1.2 (sedentary) to 2.4 (very active).
How to Use Weight Loss Calculator
- Enter current weight and height
- Input age, gender, and activity level
- Set target weight and timeline
- Get daily calorie needs and timeline
Weight Loss Timeline Examples
| Current Weight | Goal Weight | Timeline (1 lb/week) | Timeline (2 lbs/week) |
|---|---|---|---|
| 200 lbs | 180 lbs | 20 weeks | 10 weeks |
| 250 lbs | 200 lbs | 50 weeks | 25 weeks |
| 300 lbs | 250 lbs | 50 weeks | 25 weeks |
Activity Level Factors
- Sedentary: Little exercise (×1.2)
- Lightly Active: Light exercise 1-3 days/week (×1.375)
- Moderately Active: Moderate exercise 3-5 days/week (×1.55)
- Very Active: Hard exercise 6-7 days/week (×1.725)
Weight Loss Calculator Features
Provides realistic timelines, macronutrient suggestions, and progress tracking to support sustainable weight loss.
When to Use Weight Loss Calculator
- Starting a weight loss journey
- Setting realistic goals
- Planning meal and exercise regimens
- Tracking progress over time
Frequently Asked Questions
How many calories should I eat to lose weight?
Create a 500-1,000 calorie deficit below your maintenance level. Use TDEE calculators to determine your specific needs based on age, weight, height, and activity level.
What is the safest rate of weight loss?
0.5-2 pounds per week is considered safe and sustainable. Faster weight loss often leads to muscle loss and is harder to maintain long-term.
How long should it take to lose weight?
Timeline depends on starting weight, goal weight, and calorie deficit. Use the calculator to get personalized estimates, but focus on sustainable progress rather than speed.
Conclusion
The Weight Loss Calculator provides personalized planning for safe, sustainable weight loss with realistic timelines and calorie recommendations.