How it works
The result applies a fixed range to body weight
The calculator converts the entered weight to kilograms and multiplies it by the range attached to the selected goal. The general-health option uses 0.8 g/kg. The exercise options use higher fixed ranges. The result is an estimate, not a diagnosis or nutrition prescription.
*12 month plan, billed once for the term when a physician approves. Renews each term.
The 2017 International Society of Sports Nutrition position stand focuses on healthy people who exercise. It supports higher protein intake for that population, but it does not make every range suitable for every adult or medical condition.1
Individual context
Actual body weight may not be the right basis for everyone
A 2025 joint advisory on nutrition during GLP-1 treatment describes 0.8 g/kg as the adult RDA and notes that higher targets have been proposed during active weight reduction. It also says there is no consensus on the best weight basis for people with obesity and that actual body weight can substantially overestimate needs.2 A clinician or registered dietitian may choose a different basis or target.
Start here · one question
What's your goal weight?
Choose a goal to discuss with your clinician. You can change it in your intake.
Reading the result
Use the range as a discussion starting point
The lower and upper numbers come from the selected option. The per-meal figure simply divides the upper estimate by four. It is an arithmetic illustration, not a required meal schedule, a leucine threshold or a promise about muscle gain.
Kidney disease needs tailored nutrition guidance. NIDDK explains that some people with chronic kidney disease may need moderate protein, while people receiving dialysis may need more. Protein needs can change over time, so work with a dietitian or health professional when kidney function, treatment, appetite or weight changes.3
