What you will get
Better than typical
Typical
Above typical
A marker on that range, in kilos as well as percent, the three things that move it, and the single one
worth changing first. No score, no grade, no email needed.
Every number is worked out on your device. Nothing is sent anywhere, and nothing is stored.
Share of your loss that is likely lean mass
—
likely between — and
—
0–20%
Better than typical
The faint line at 39% is the average in the STEP-1 semaglutide body-composition substudy. The shaded
band is how sure this estimate is, not how much you have lost.
Of the — kg you have lost in
— weeks, roughly — kg may be lean mass.
— kg fat — kg lean mass
Somewhere between — and
— kg — about
— of the lean mass you likely started with. This is
modelled from published averages for people like you, not measured. A DEXA scan is the only way to know
for certain.
Because you are not tracking protein, this estimate assumes a fairly typical 0.75 g per kg and the range
around it is roughly twice as wide. Three days of honest tracking would narrow it more than any other
single input.
No loss to split yet
You are — kg above your starting weight,
so there is no weight loss to divide into fat and lean.
That is ordinary and it is not a verdict on you. Weight moves up on a dose pause, on a titration week,
with a salty meal, with a new training block, and with the water your body stores alongside carbohydrate.
If the scale is drifting up over more than three or four weeks, that is a conversation for your prescriber
rather than a calculator.
Too early to read
At — weeks in, most of the
— kg on the scale is water and gut
content, not tissue.
Splitting it into fat and lean now would give you a number that looks precise and means very little. Come
back at week four or five — the estimate gets meaningfully better once the early fluid shift has settled.
The three things that move it
The grey block on each bar is the target range. The line is you.
Want this to read again later?
This opens your own mail app with the result written into it, addressed to whoever you like.
What this cannot tell you
Whether that share is rising or falling.
This is one reading. The number that decides how you finish is not today's share — it is which way it
moves over the next three months, and especially what happens the week your dose goes up, when appetite
and protein usually drop together.
The tracker takes a weekly weigh-in and answers exactly that: which direction, what changed, and the one
thing to do about it this week. It also prints a one-page summary you can take to an appointment.