A tool for people on GLP-1 treatment
Losing weight on treatment, in a way you understand.
A calorie range calculated for your weight and body composition, protein targets and verified information with no miracle promises.
Calorie guide
Your daily intake
- 1 · Body
- 2 · Activity
- 3 · Result
More accurate numbers
The best start is to measure your body composition
Weight alone does not tell you how much is fat and how much is muscle. Bioelectrical impedance analysis (for example InBody) tells them apart. The calculator then works from your measured lean mass rather than a guess, so the range is narrower. When losing weight on GLP-1 you will also see whether you are losing fat or muscle.
- 1
Get measured
Ideally in the morning, fasting and after urinating, with no strenuous exercise the day before.
- 2
Enter it in the calculator
Body fat or lean mass. The intake range narrows.
- 3
Repeat after 4 to 8 weeks
Under the same conditions and on the same device, otherwise results cannot be compared.
The measurement is approximate. The result is affected by hydration, food and exercise and does not replace a medical examination. InBody is a trademark of InBody Co., Ltd.
Methodology
Numbers you can trace
Every step of the calculation has a source and the result is always a range. The calculator guarantees nothing; it only shows how much reality can differ from the estimate.
Full methodology- 01
Resting energy expenditure
An equation suited to higher body weight; when body fat is known, the calculation uses lean mass.
- 02
Activity
Cautious multipliers, because activity is commonly overestimated at higher body weight.
- 03
Deficit with a lower limit
Appetite is suppressed on GLP-1 treatment, so the calculator also guards a minimum.
- 04
Protein and muscle
From adjusted rather than actual weight, with an emphasis on resistance training.
- 05
Check after a few weeks
The expenditure estimate is only an estimate. Compare it with how your weight changes.
Dosing
Pen clicks and syringe units
Arithmetic only, converting a dose into clicks and units. It does not decide how much medicine you should take; your doctor does.
With dial pens (for example Ozempic and Wegovy) you set the dose by turning the dose selector and the number in the dose counter shows mg. You do not need to count clicks; see the package leaflet for the procedure.
Pen strength (mg per dose)
Quick dose choice (mg)
Unit of the amount in the syringe
Enter how much medicine is in the syringe (ml or units on the U-100 syringe scale, 1 ml = 100 units). The calculator works out how many mg that is for the selected pen.
The result appears here as soon as you choose the pen strength and the dose.
The amount drawn corresponds to a dose of
mg
A conversion of values only. If the result does not match the dose your doctor prescribed, talk to your doctor or pharmacist before injecting it.
Number of clicks
Conversion to a U-100 insulin syringe
U-100 insulin syringe size (most common are 0.3 ml, 0.5 ml and 1 ml)
units = ml
The remainder in the pen is not a verified dose and this website does not recommend using it. This conversion shows only the arithmetic of the values, not a procedure.