Healthy-Weight

Weight Loss Timeline Calculator

Set your current weight, target weight, and weekly loss rate to see how long it will take to reach your goal.

Weight Loss Timeline Calculator

Project how long it will take to reach your goal weight.

Unit system

Results update live as you type — no button needed.

Total loss
40 lbs
% of body weight
18.2%
Weeks
12
Months
2.8
Goal date at this pace
January 2027
Reality check

Add ~25-40% buffer for plateaus — loss isn't linear. At 18.2% total, you're above the 5-10% range where most metabolic benefits land.

Projected milestones
Wk 0
220 lbs
Wk 3
210.1 lbs
Wk 6
200.2 lbs
Wk 9
190.3 lbs
Wk 12
180.3 lbs

Want to hit this faster? GLP-1 medications average ~15% body-weight loss in ~10 weeks for your starting weight — check eligibility below.

Oak GLP-1 weight loss program

What is a healthy weight loss rate?

The CDC recommends losing 1 to 2 pounds per week (0.5 to 1 kg) for sustainable, long-term weight loss. Losing weight too quickly can lead to muscle loss, nutrient deficiencies, and gallstones. A moderate rate of 1 to 1.5 kg per week is achievable for many people, especially when combining a calorie deficit with GLP-1 medication.

How GLP-1 can accelerate your timeline

GLP-1 medications like semaglutide and tirzepatide can help you lose 10-22% of your body weight over 6-12 months by reducing appetite and slowing stomach emptying. Clinical trials show that GLP-1 users often lose weight faster than with diet alone, making it easier to reach your target weight sooner.

Tips for staying on track

  • Track your weight weekly, not daily — fluctuations are normal.
  • Celebrate milestones along the way to stay motivated.
  • Combine your calorie deficit with regular physical activity.
  • Prioritize protein to preserve muscle mass during weight loss.