GLP-1 calorie calculator — eating while appetite is low
GLP-1 medication lowers appetite and, after substantial weight loss, total daily energy expenditure too. Pick a reduction band to see a realistic intake target and the protein range that protects muscle.
Daily intake target
1661kcal / day
| Maintenance (TDEE) | 2214 |
| BMR | 1610 |
| Protein target | 114–152 g |
Planning estimate only. GLP-1 medication affects digestion, blood sugar and blood pressure — set your actual targets with your prescribing clinician.
Frequently asked questions
Where do the 16–39% figures come from?▾
Trials of GLP-1 medication have reported average reductions in total daily energy expenditure in roughly this range after substantial weight loss. It is a population average, not a prediction for you — use the slider as a planning band, then adjust against your own 7-day weight trend.
Should I eat at the low end to lose faster?▾
No. Appetite is already suppressed on these drugs; the bigger risk is under-eating protein and losing muscle. Start near the higher intake and only go lower if weight is not moving after several weeks.
Why does protein stay high when calories drop?▾
Protein is what protects lean mass during rapid loss. Aim for about 1.2–1.6 g per kg of body weight, spread across meals you can actually finish.