This is one of the most common questions people ask after buying their first tub. The answer depends on how much protein you're already eating from food.
Start With Your Total Protein Goal
Most research points to 0.7–1g of protein per pound of body weight for people who lift or want to build muscle. If you're sedentary, you can get away with less (around 0.4g per pound), but more protein generally won't hurt.
Quick examples:
- 150 lb person lifting weights → 105–150g protein per day
- 180 lb person lifting weights → 125–180g protein per day
- 200 lb sedentary person → ~80g protein per day
Protein Powder Fills the Gap
Protein powder isn't magic though. It's just convenient protein. If you really want to simplify it, most of it is just milk protein in powder form. Use it to cover whatever you're not getting from meals.
Say you need 150g per day and your meals give you 100g. That's a 50g gap. Roughly about two scoops of most powder brands.
Count the source as well as the number. Collagen lists protein grams, but it lacks tryptophan and is low in leucine, so it should not displace complete protein in a muscle-focused target. Our collagen vs whey comparison explains the difference.
Simple formula:
Daily protein goal − protein from food = how much powder you need
If you're already hitting your target through chicken, eggs, Greek yogurt, etc., you don't need any powder at all.
Practical Ranges
Most people land somewhere in this range:
| Goal | Typical powder intake |
|---|---|
| Light supplement | 1 scoop (20–25g) |
| Moderate gap-fill | 1–2 scoops (25–50g) |
| Heavy reliance | 2–3 scoops (50–75g) |
Going beyond 3 scoops daily is usually a sign you should eat more real food. Whole foods bring nutrients that powder doesn't.
Timing Doesn't Matter Much
Don't overthink when to take it. Protein timing has minimal impact compared to just hitting your daily number. Take it whenever it's convenient. Post-workout, breakfast, or as a snack.
One More Thing: Cost
If you're using 2 scoops a day, that tub disappears fast. At that usage, the price per gram difference between brands adds up. A $0.01 difference per gram is $15+ per month at moderate intake.
Worth running the numbers on our comparison tool before committing to a brand.
Bottom Line
Figure out your daily protein goal, track what you eat for a few days, and use powder to fill the gap. For most people, that's 1–2 scoops. Nothing complicated.