Free GLP-1 tools & calculators
No sign-up, no email — just quick tools to help you keep your muscle and hit your protein while you lose weight on a GLP-1.
Weight-Loss Rate Checker
Your pace as a share of body weight per week — plus how much of the loss so far was lean mass, with and without resistance training.
Open the toolMuscle-Preservation Calculator
Enter your weight and how much you plan to lose — see the lean mass at stake, plus the protein target and training that protect it.
Open the toolHigh-Protein Meal Builder
Set your daily protein target and tap foods to watch it add up — the easy way to hit your protein on a small appetite.
Open the toolProtein Calculator
Your daily protein target in grams, a per-meal number for a small appetite, and the gentler band to start from on a rough week.
Open the toolWaist-to-Height Ratio Calculator
One tape measure, one rule: keep your waist under half your height. Unlike BMI, it isn’t inflated by the muscle you’re working to keep.
Open the toolBMI Calculator (and what it can’t see)
Your BMI, plus the part most calculators leave out — it can’t tell fat from muscle, which is the one thing that matters here.
Open the toolBody-Fat Calculator (tape method)
A free body-fat estimate from three tape measurements — with the error bar shown, because it’s a ballpark, not a measurement.
Open the toolHabit Cost Calculator
What takeaway, unused memberships and unnecessary supplements cost you a year — next to the one-off price of training at home.
Open the toolThe tools show you the plan; Mira helps you do it. It’s the AI strength coach for GLP-1 journeys — short sessions scored by your phone’s camera, so the muscle you’re working to keep actually stays on.
Build my planPrefer to read first? Browse the full guide library.