How much protein should I eat in a day?

How much protein should I eat in a day?

It depends on how many calories you eat in a day.
In general, 10% – 35% of your daily calories should come from protein.

Example:
If you eat 1800 calories a day, 180 – 630 calories should come from protein.

Here’s the math
1800 calories x 10% (0.10) = 180 calories
1800 calories x 35% (0.35) = 630 calories

10% – 35% of 1800 calories = 180 – 630 calories from protein

How many grams of protein should I eat in a day?

There are 4 calories in 1 gram of protein.
180 – 630 calories of protein = 45 – 157.5 grams of protein

Here’s the math:
180 calories ÷ 4 calories per gram of protein = 45 grams of protein
630 calories ÷ 4 calories per gram of protein = 157.5 grams of protein

  • If you eat 1200 calories a day, 120-420 calories (30-105 grams) of protein are recommended.
  • If you eat 1400 calories a day, 140-490 calories (35-122.5 grams) of protein are recommended.
  • If you eat 1600 calories a day, 160-560 calories (40-140 grams) of protein are recommended.
  • If you eat 2000 calories a day, 200-700 calories (50-175 grams) of protein are recommended.
Source:
Dietary Guidelines for Americans 2005. U.S. Department of Health and Human Services and U.S. Department of Agriculture

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