Transparent method
The formula
Worked example
Example inputs
How to interpret the result
A daily protein total spread evenly across several meals is used more effectively by the body than the identical total eaten in one large sitting, because muscle protein synthesis responds to protein delivered in servings the body can actually process, not to a single large dose arriving all at once.
Before you rely on it
What to check
Divide the daily target across three or four meals rather than concentrating it into one, especially around training.
The common error
Where people go wrong with protein intake calculator
Hitting the full daily protein target in a single large meal and assuming the total is all that matters. Distribution across the day measurably affects how much of that protein gets used for its intended purpose.
Sensitivity evidence
How weight changes the daily protein target
| Weight | Daily protein target | Calories from protein |
|---|---|---|
| 128 | 76.8 | 307.2 |
| 144 | 86.4 | 345.6 |
| 160worked example | 96 | 384 |
| 176 | 105.6 | 422.4 |
| 192 | 115.2 | 460.8 |
Every input, tested
Which input moves the daily protein target most
| Input | Tested from | To | Daily protein target at each end | Swing |
|---|---|---|---|---|
| Training goal | Sedentary / general health | Muscle building | 57.6 to 128 | 70.4 (73%) |
| Weight | 144 | 176 | 86.4 to 105.6 | 19.2 (20%) |
Step by step
The worked example, input by input
| Input | Value used | What it means |
|---|---|---|
| Weight | 160 | Body weight in pounds. |
| Training goal | Regular exercise | Grams of protein per pound of body weight. |
| Daily protein target | 96 | |
| Calories from protein | 384 | |
Inputs, definitions and assumptions
Weight
Body weight in pounds.
Training goal
Grams of protein per pound of body weight.
Where the inputs come from
Enter your body weight in pounds and choose a training goal, which sets grams of protein per pound of body weight. The Recommended Dietary Allowance for a sedentary adult is 0.8 grams per kilogram, about 0.36 grams per pound, while research on active people and those trying to preserve muscle during weight loss supports roughly 0.55 to 0.9 grams per pound. Use your current weight, or a goal weight if you are much heavier than a healthy range.
When the result stops applying
The optimal intake for muscle gain is still debated, and higher intakes above roughly 0.9 grams per pound show diminishing returns. Older adults may need more than the RDA. Pregnancy and breastfeeding raise needs.
What to compare it with
See the total calories on the TDEE and calorie goal pages, the split on the macronutrient calculator, and lean mass on the lean body mass page. The one-rep max and Wilks calculators serve strength athletes. A dietitian can tailor protein for medical conditions.
People also ask
Frequently asked questions
How much protein do I need per day?
The RDA is about 0.36 grams per pound for sedentary adults, while active people and those losing weight often aim for 0.55 to 0.9 grams per pound.
Can too much protein be harmful?
For healthy people, moderately high intakes appear safe, but people with kidney disease should follow medical advice, and extra protein beyond needs brings no added benefit.
Do I need protein supplements?
No. Food can supply enough protein for most people, and supplements are a convenience for those who struggle to reach their target.