GLP-1 tools and calculators
Every free GLP-1 calculator and tracker on GLPKit, in one place. Each tool answers one practical question about life on Ozempic, Wegovy, Mounjaro or Zepbound, from weight loss timelines and protein targets to costs, dose schedules and supplies.
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GLP-1 Weight Loss Calculator
Estimate how much weight you could lose on semaglutide or tirzepatide over 3 to 18 months, based on clinical trial averages.
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GLP-1 Protein Calculator
Find your daily protein target to help protect muscle while you lose weight, with a simple per meal split.
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GLP-1 Fiber Calculator
Work out a daily fiber target to help with the constipation that many people notice on GLP-1 medication.
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GLP-1 Cost Calculator
Add up the real monthly and total cost of treatment so you can compare brands, doses and savings programs side by side.
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GLP-1 Calorie Calculator
Estimate a sensible daily calorie range for steady weight loss while you are eating less on GLP-1 medication.
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GLP-1 Half-Life Calculator
See roughly how long a dose stays in your system, which helps explain weekly dosing and what happens after you stop.
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GLP-1 BMI Eligibility Calculator
Work out your BMI and see how it compares with the BMI ranges described in the FDA labels for weight management GLP-1 medicines.
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GLP-1 Body Fat Calculator
Estimate your body fat percentage, fat mass and lean mass from simple tape measurements, using the US Navy method.
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GLP-1 Macro Calculator
Turn your daily calorie target into protein, carb and fat grams, with protein set first to help protect muscle.
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GLP-1 Water Intake Calculator
Estimate your daily water target from your weight, activity and climate, for the days when GLP-1 treatment blunts your thirst.
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GLP-1 Muscle Loss Calculator
Estimate how much of your expected weight loss could be lean mass, and see the protein and training habits that protect it.
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GLP-1 Dose Schedule Calculator
See the published label dose schedule for your medication as calendar dates, starting from your own start date.
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GLP-1 Stop and Weight Regain Calculator
Stopped your medication? Estimate how much weight people regained on average in the trial follow-ups, and where that puts your weight now.
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GLP-1 Supply Tracker
Enter the doses you have on hand and your next injection date to see upcoming dose dates, the day you run out, and when to reorder.
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Compounded vs Branded Savings Calculator
Compare the cost of branded GLP-1 medicines with their compounded counterparts and see the saving over 1 to 24 months.
Open the calculatorFrequently asked questions
Are the GLP-1 tools really free?
Yes. Every calculator and tracker on GLPKit is free to use, with no account and no sign up. The tools run in your browser, so the numbers you type stay on your device and are not sent to a server.
Where do the calculator estimates come from?
The estimates are built from published clinical trial averages and the dosing schedules in the FDA approved labels for Ozempic, Wegovy, Mounjaro and Zepbound. Each tool page explains its method and links its sources.
Do the tools replace medical advice?
No. The tools are for education and planning only. They do not give medical advice or dosing guidance. Your prescriber makes the decisions about your medication, so take any result you want to act on to your own doctor or pharmacist.