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There are 56 calories in a 1oz serving of homemade beef jerky. Calorie breakdown: 18% fat, 2% carbs, 80% protein.
One ounce of beef jerky generally provides between 9 and 14 grams of protein, depending on the brand and quality of jerky you buy. Men need at least 56 grams of protein daily, and women should get a minimum of 46 grams per day -- which is the protein recommended dietary allowance (RDA).