TDEE calculator
What your body spends in a day, and the protein floor that decides whether what comes off is fat or muscle. Built for people whose appetite is being handled by something else.
The equation was validated with separate constants for each. It is the only place this figure is used.
1,758 at rest
Protein floor 126 g a day. On an appetite suppressant this is the number that slips first, and it’s the one holding onto muscle while the weight comes off.
Below 1,758you’re under what your body spends at rest. That isn’t a faster diet.
Why this is on a peptide site
GLP-1s work by removing your appetite. That makes eating too little the easy mistake rather than the hard one — and a deficit that deep, held for months, takes lean mass with the fat. Knowing maintenance turns “I’m not hungry” into a number you can check.
How it’s worked out
Mifflin-St Jeor for resting burn, multiplied by an activity factor. It’s the equation with the best validation in non-athletic populations, and the one nearly every other calculator uses — a figure that disagreed with all of them would be a figure nobody trusts.
It is still an estimate. Two people at the same height and weight can differ by a few hundred calories. Treat it as a starting point and let the scale correct it over a few weeks.
Common questions
- Why does a peptide site have a calorie calculator?
- Because GLP-1s work by removing your appetite, which makes eating too little the easy mistake rather than the hard one. A deficit that deep, held for months, takes lean mass along with the fat. Knowing your maintenance turns “I’m not hungry” into a number you can check against.
- How much protein should I eat on a GLP-1?
- The figure that keeps recurring for holding onto lean mass in a deficit is around 0.7 g per pound of bodyweight. On an appetite suppressant it's the first thing to slip, because protein is filling and you're already full.
- Which formula is this?
- Mifflin-St Jeor, multiplied by an activity factor. It has the best validation in non-athletic populations and it's what nearly every other calculator uses — a number that disagreed with all of them wouldn't be much use.
- How accurate is it?
- It's an estimate. Two people of the same height, weight, age and sex can differ by a few hundred calories a day. Treat it as a starting point, then let a few weeks of scale data correct it.