Great question and one that varies based on both your goals and activity level.
The answer is science-based and thanks to the pros at examine.com for their research into this. Check out the graph below 👇🏼
If your BMI is 18.5 to 24.9, it falls within the normal or healthy weight range.
If your BMI is 25.0 to 29.9, it falls within the overweight range.
If your BMI is 30.0 or higher, it falls within the obese range.
Whether you're trying to lose weight, build muscle, or maintain, I recommend 1-1.5g of protein per kg of bodyweight. So if you weigh 150 pounds or 68kg, aim for 68-102g of protein per day.
Personally, I aim for double my bodyweight by supplementing with Naked Nutrition (www.nakednutrition.com) Pea & Brown Rice protein powders. Why? 👇🏼