Tools

Free health calculators.

Quick, no-signup calculators for the numbers that actually matter when you're working on weight, metabolic health, or starting a GLP-1.

BMI calculator

The screening number every weight-loss program uses for eligibility. Most require BMI ≥ 27 with a comorbidity, or ≥ 30 without.

Total Daily Energy Expenditure — the calories you burn in a day. The foundation of any deficit goal.

The macro most people fall short on, especially while losing weight. Hitting your target protects muscle on a deficit.

GLP-1s mask thirst, so most patients underdrink and end up with constipation, fatigue, and headaches. This is your real baseline.

The standard titration schedule for semaglutide and tirzepatide. What dose you should be on, and when you typically step up.