Good Fit
One gram per pound works well as a simple upper-end target for lean lifters, strength athletes, and people cutting while resistance training.
A practical target in the units you use.
Calculate your daily protein intake in grams per pound of body weight. Compare practical targets for weight loss, muscle gain, maintenance, and the g/kg ranges used in sports nutrition research.
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General health starts around 0.36-0.55 g/lb, weight loss often uses 0.55-0.91 g/lb, and muscle gain commonly uses 0.73-1.0 g/lb. The popular 1.6 g/kg target equals about 0.73 g/lb, while 1 g/lb equals 2.2 g/kg.
Use pounds or kilograms.
Get one clear daily plan.
Adjust the fields, then calculate your daily protein target below.
| Goal | g/lb per day | g/kg equivalent | Example (154 lb person) |
|---|---|---|---|
| General Health | 0.36 – 0.55 g/lb | 0.8 – 1.2 g/kg | 55 – 85 g/day |
| Weight Loss | 0.55 – 0.91 g/lb | 1.2 – 2.0 g/kg | 85 – 140 g/day |
| Muscle Gain | 0.73 – 1.0 g/lb | 1.6 – 2.2 g/kg | 112 – 154 g/day |
| Recomposition | 0.64 – 1.0 g/lb | 1.4 – 2.2 g/kg | 99 – 154 g/day |

Since 1 kg = 2.2 lb, converting between the two is straightforward. To go from g/kg to g/lb, divide by 2.2. The popular “1 gram per pound” rule equals 2.2 g/kg — the upper end of the evidence-based muscle gain range.

| Target | Converted value | Best use |
|---|---|---|
| 1.2 g/kg | 0.55 g/lb | Lower end for weight loss or higher general intake. |
| 1.6 g/kg | 0.73 g/lb | Common evidence-based muscle-gain starting point. |
| 2.0 g/kg | 0.91 g/lb | Higher end for cutting, recomposition, or hard training. |
| 2.2 g/kg | 1.0 g/lb | Upper-end simple fitness rule, not a requirement for everyone. |
Per-pound protein math is simplest when total body weight roughly reflects lean mass. If body fat is high, total body weight can produce an inflated target. In that case, use the calculator body-fat field, an adjusted weight, or the lean body mass calculator as a cross-check before pushing toward upper-end targets like 0.91-1.0 g/lb.
One gram per pound works well as a simple upper-end target for lean lifters, strength athletes, and people cutting while resistance training.
For general health, maintenance, or casual exercise, 0.36-0.55 g/lb is usually a more appropriate starting point than jumping straight to 1 g/lb.
If body fat is high, calculating from total pounds can overshoot. Add body fat percentage so the calculator can use a more realistic effective weight.
Kidney disease, pregnancy, dialysis, and complex medical conditions require personalized protein targets from a qualified clinician.
If you weigh 180 lb and choose 0.8 g/lb for fat loss, your target is 144 g protein per day. If you eat three meals and one snack, that might look like 35-40 g at each meal plus a 20-30 g snack.

This calculator converts evidence-based g/kg ranges into grams per pound so the target is easier to use if you track body weight in pounds.
| Input | Formula | How it is used |
|---|---|---|
| Daily protein | body weight in lb × selected g/lb target | Example: 180 lb × 0.8 g/lb = 144 g/day. |
| Unit conversion | g/lb = g/kg ÷ 2.2 | Example: 1.6 g/kg is about 0.73 g/lb. |
| 1 g/lb rule | 1.0 g/lb = 2.2 g/kg | This is the upper end of common muscle-gain targets, not a requirement for everyone. |
For general health, 1 g/lb is usually more than needed; the lower goal-specific ranges are often easier to sustain.
Best if you track body weight in pounds and want simple g/lb math.
Explore calculatorBetter when comparing studies or clinical guidelines.
Explore calculatorBetter when you want the calculator to select the hypertrophy range.
Explore calculatorBetter when adjusted body weight and calorie deficit context matter.
Explore calculatorUnit conversion and when each method is clearer.
Read moreHow the 0.7-1.0 g/lb range maps to hypertrophy.
Read moreHow per-pound targets change in a deficit.
Read moreUse lean or adjusted weight when total body weight overstates the target.
Read moreThe '1 gram per pound' rule is a popular simplified guideline in fitness. Scientific research supports a range of 0.7–1.0 g per pound (1.6–2.2 g/kg) for muscle gain. So 1 g/lb is at the upper end but safe and effective for most healthy individuals doing resistance training.
For weight loss, aim for 0.55–0.91 g per pound (1.2–2.0 g/kg) of body weight. Higher protein during a calorie deficit helps preserve lean muscle mass and increases satiety, making your diet easier to stick to.
Using total body weight works for most people. If your body fat percentage is above 30%, consider using lean body mass or an adjusted weight to avoid over-estimating. Our calculator handles this adjustment when you enter your body fat percentage.
To convert g/kg to g/lb, divide by 2.2. For example, 2.0 g/kg = 0.91 g/lb. To convert g/lb to g/kg, multiply by 2.2. For example, 1.0 g/lb = 2.2 g/kg.
Disclaimer: This calculator provides estimates based on published research. Consult a registered dietitian or healthcare provider for personalized guidance.