Protein rules of thumb
Many adult guidelines start near 0.8 grams per kilogram of body weight. Active people and those lifting weights often use 1.2–2.0 g/kg. 75 kg at 1.6 g/kg is 120 g a day. Kidney disease, pregnancy, and medical diets need a clinician, not this page.
Common questions
Is more always better?
No. Extra protein becomes calories. Space it through the day if you can.
Plant protein?
Count grams the same. Combine foods so you get enough total protein.