Excess Weight Loss Calculator

Excess weight loss is the reduction in weight beyond one’s target or goal weight. It is calculated by subtracting the current weight from the initial weight. This measure helps individuals track progress toward achieving a healthier weight. It’s important to do so in a safe and sustainable manner for long-term health and well-being.

Excess Weight Loss Calculator

Calculating excess weight loss involves determining the amount of weight a person has lost in relation to their initial weight and target weight. Here’s a table summarizing the key information you need to know:

Initial WeightThe person’s starting weight
Target WeightThe desired or goal weight
Current WeightThe person’s current weight
Excess WeightThe extra weight to lose to reach the goalExcess Weight = Initial Weight – Target Weight
Excess Weight LossThe amount of excess weight lostExcess Weight Loss = Initial Weight – Current Weight
Excess Weight Loss PercentagePercentage of excess weight lostExcess Weight Loss Percentage = (Excess Weight Loss / Excess Weight) * 100%

Here’s how you can use this information:

  1. Input the person’s initial weight and target weight.
  2. Measure the person’s current weight.
  3. Calculate the excess weight by subtracting the target weight from the initial weight.
  4. Calculate the excess weight loss by subtracting the current weight from the initial weight.
  5. Calculate the excess weight loss percentage to determine the proportion of excess weight that has been lost.

For example, if a person’s initial weight is 90 kg, their target weight is 70 kg, and their current weight is 80 kg:

  • Excess Weight = 90 kg – 70 kg = 20 kg
  • Excess Weight Loss = 90 kg – 80 kg = 10 kg
  • Excess Weight Loss Percentage = (10 kg / 20 kg) * 100% = 50%

In this example, the person has lost 10 kg of excess weight, which is 50% of their initial excess weight.


  1. How much of my excess body weight have I lost?
    • This depends on your initial weight, target weight, and the progress you’ve made. A common goal is to lose around 70-80% of your excess body weight after bariatric surgery like gastric sleeve.
  2. What is the formula for excess body weight?
    • Excess Body Weight = Initial Weight – Target Weight
  3. How do you calculate excess body fat?
    • Excess body fat is typically calculated using body fat percentage. You can calculate it using various methods like skinfold calipers, bioelectrical impedance, or DEXA scans.
  4. Can I lose 100% of excess weight with gastric sleeve?
    • It’s uncommon to lose 100% of excess weight. Most patients aim to lose a significant portion, such as 70-80%, but individual results may vary.
  5. What happens when you lose too much body fat?
    • Excessive loss of body fat can lead to malnutrition, muscle wasting, and other health issues. It’s important to maintain a healthy balance.
  6. How long does it take to lose excess body fat?
    • The rate of fat loss varies from person to person, but a safe and sustainable rate is around 0.5-2 pounds (0.23-0.91 kg) per week.
  7. Why am I losing weight so fast?
    • Rapid weight loss can occur due to calorie restriction, increased physical activity, or underlying medical conditions. It’s important to consult a healthcare professional if you’re concerned.
  8. How much weight will I lose after gastric sleeve?
    • Patients often lose 50-70% of their excess weight within the first year after gastric sleeve surgery.
  9. How much weight do you lose with revision from sleeve to bypass?
    • A revision surgery’s weight loss outcomes can vary, but it’s typically less than the initial surgery. Expect to lose around 20-30% of your excess weight.
  10. How to lose body fat fast?
    • A combination of a healthy diet and regular exercise is key. Aim for a sustainable calorie deficit and prioritize strength training.
  11. What does 15 percent body fat look like?
    • At 15% body fat, you would have visible muscle definition and a lean appearance.
  12. What does 20 percent fat look like?
    • At 20% body fat, you would have less visible muscle definition compared to 15%, but still a relatively lean appearance.
  13. What can you never eat again after gastric bypass?
    • After gastric bypass, some foods may be challenging to tolerate, including high-sugar and high-fat items. Consult with your surgeon for specific dietary guidelines.
  14. How much weight can you lose 3 months after gastric sleeve?
    • After 3 months, you may have lost around 20-30% of your excess weight, but individual results vary.
  15. How do bariatric patients lose weight so fast?
    • Bariatric surgery reduces stomach size, leading to reduced food intake and often rapid initial weight loss. Patients must also follow strict dietary guidelines.
  16. Which part of the body loses fat first?
    • Fat loss patterns vary among individuals, but it’s common for the abdomen and face to show early fat loss.
  17. Can I lose a stone in 2 weeks?
    • Losing a stone (14 pounds or approximately 6.35 kg) in 2 weeks is an aggressive goal and may not be healthy or sustainable.
  18. What are the signs of losing belly fat?
    • Signs may include a smaller waistline, improved clothing fit, and reduced abdominal measurements.
  19. What burns the most belly fat?
    • A combination of cardio exercises (like running or cycling) and strength training can help burn belly fat.
  20. What are the 5 foods that burn belly fat?
    • No specific foods can target belly fat, but a balanced diet with whole grains, lean proteins, fruits, vegetables, and healthy fats can aid fat loss.
  21. What time should you stop eating to lose belly fat?
    • Some people find success with early dinner (around 6-8 pm) to allow for better digestion before sleep, but focus on overall calorie balance.
  22. How much weight loss is concerning in a month?
    • Losing more than 5-8% of your body weight in a month may be concerning and should be discussed with a healthcare provider.
  23. Is 1 stone weight loss noticeable?
    • A 1-stone (14-pound) weight loss is generally noticeable, especially in clothing fit and appearance.
  24. Can I lose a stone in a month?
    • Losing a stone (14 pounds) in a month is possible but considered rapid and may not be sustainable or healthy for everyone.
  25. What happens 10 years after gastric sleeve?
    • Long-term effects vary, but maintaining a healthy lifestyle is crucial for continued success.
  26. What is the failure rate of the gastric sleeve?
    • Failure rates depend on individual factors and definitions of success, but it’s generally considered effective in most cases.
  27. What is dumping syndrome?
    • Dumping syndrome is a condition where food moves too quickly from the stomach into the small intestine, leading to symptoms like nausea, sweating, and diarrhea, often after eating sugary or high-fat foods.
  28. Does walking burn fat?
    • Yes, walking can help burn fat, especially when done regularly as part of a balanced exercise routine.
  29. How can I lose my tummy in 7 days?
    • Losing a significant amount of belly fat in 7 days is unrealistic. Focus on long-term lifestyle changes for sustainable results.
  30. What exercise burns the most fat at home?
    • High-intensity interval training (HIIT) and strength training exercises are effective for burning fat at home.
  31. Do you lose weight faster with sleeve or bypass?
    • Gastric bypass surgery often leads to faster initial weight loss compared to gastric sleeve, but long-term results can vary.
  32. Which is better weight loss sleeve or bypass?
    • The choice between sleeve and bypass depends on individual factors. Both have their advantages and disadvantages, and it’s essential to discuss with a healthcare provider.
  33. What BMI is needed for gastric sleeve revision?
    • The BMI requirement for a revision surgery varies but is typically around 35 or higher.
  34. Is 20% body fat chubby?
    • A body fat percentage of 20% is not considered chubby but falls within the healthy range for many people.
  35. How long does it take to go from 15 to 10% body fat?
    • Going from 15% to 10% body fat can take several weeks to several months, depending on factors like diet and exercise.
  36. What does 20% body fat look like on a woman?
    • At 20% body fat, a woman typically has visible muscle definition and a lean appearance.
  37. How much fat is noticeable?
    • The visibility of fat depends on factors like body composition, distribution, and overall fitness level. Even small reductions can be noticeable.
  38. At what body fat does jawline show?
    • The jawline may become more defined and visible at lower body fat percentages, typically below 15-20%.
  39. What is the ideal body fat for a woman?
    • The ideal body fat percentage for women varies but is generally considered healthy in the range of 20-25%.
  40. Can I ever eat pizza again after gastric bypass?
    • After gastric bypass, moderation and choosing healthier pizza options may be advisable, but it’s possible to enjoy pizza in moderation.
  41. Can I ever eat pasta again after gastric bypass?
    • Yes, you can eat pasta in moderation after gastric bypass, but it’s essential to choose whole-grain options and watch portion sizes.
  42. Does anyone regret getting gastric sleeve?
    • Some individuals may regret bariatric surgery, but this varies widely. It’s essential to thoroughly discuss the decision with healthcare professionals.
  43. How can I speed up weight loss after gastric sleeve?
    • Focus on a balanced diet, regular exercise, and follow post-surgery guidelines to support weight loss.
  44. Why am I losing inches but not weight after gastric sleeve?
    • You may be losing body fat while gaining muscle, which can result in inches lost even if the scale doesn’t show significant weight change.
  45. Can I lose 100% of excess weight with gastric sleeve?
    • While it’s possible to lose a significant amount of excess weight with gastric sleeve, it’s unlikely to achieve 100% loss of excess weight.
  46. Can your stomach grow back after gastric bypass?
    • While the stomach can stretch over time, it’s less likely to return to its pre-surgery size if dietary and lifestyle changes are maintained.
  47. How much weight do they want you to lose before bariatric surgery?
    • Bariatric surgery candidates are often advised to lose some weight before surgery, typically around 10% of their excess weight.
  48. How painful is bariatric surgery recovery?
    • Bariatric surgery recovery can be uncomfortable, but pain levels vary. Patients are typically provided with pain management options.

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