For a healthy adult, the standard baseline is 0.8 grams of protein per kilogram of body weight per day. That is the commonly cited recommended dietary allowance, so a 150-pound person lands at about 54 grams a day.
The number is a baseline, not a perfect rule for every person. MedlinePlus notes that protein needs vary with age, sex, health, and activity level, and it also points out that protein makes up only one part of your total calorie needs. If you are trying to translate the number into real food, the practical test is whether you are getting a protein source at meals and snacks instead of saving all of it for dinner.
A simple way to use the number is to think in daily anchors: eggs or yogurt at breakfast, beans, tofu, fish, chicken, or meat at lunch or dinner, and a protein-containing snack if the day runs long. That keeps the total spread out instead of forcing one giant portion at night.
This is general information, not professional medical advice. For decisions about your situation, talk to a qualified professional.
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