Gastric Sleeve Surgery Weight Loss Calculator

Our gastric sleeve weight loss calculator will you show you what the historical average weight loss has been for someone with your height and weight. This calculation isn't meant to show you how much weight you'll lose with gastric sleeve surgery, but it will show you what the average outcome is for someone with your statistics. Every person is different in many ways, so use this just as a general guide.

Gastric Sleeve Weight Loss Timeline

Average weight loss benchmarks expected after gastric sleeve surgery:

1 Year After Surgery:

• Most patients lose 60-70% of their excess weight.
• This equals roughly 60–70 lbs of weight loss for someone who is 100 lbs overweight.

2 Years After Surgery:

• Most individuals reach their lowest weight between 12 and 24 months post-surgery.
• The average success rate remains between 80–90% at the 2-year mark.

5 Years After Surgery:

• Most patients maintain significant weight loss long-term, though slight sleeve dilation over time can lead to weight regain if healthy diet and lifestyle habits are not maintained.

Understanding Your Daily Energy Needs (TDEE)

Your Total Daily Energy Expenditure (TDEE) is the number of calories burned each day. Knowing your TDEE helps set clear calorie targets before and after bariatric surgery. Try our free TDEE Calculator here.