Amino Acid Protein Calculator
Enter foods to make sure you are getting all the essential amino acids.
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      Romaine Lettuce
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      Quick Stats
      • Calories 17 1% DV
      • Protein 1.2g 2% DV
      • Carbs 3.3g 1% DV
      • Fat 0.3g 0% DV
      • Fiber 2g 8% DV
      • Sugar 1g 2% DV
      Amino Acid Bar Charts

      Total Recommended Daily Intake

      • Cystine 2% RDI 6mg
      • Histidine 3% RDI 21mg
      • Isoleucine 3% RDI 45mg
      • Leucine 3% RDI 76mg
      • Lysine 3% RDI 64mg
      • Methionine 2% RDI 15mg
      • Phenylalanine 7% RDI 65mg
      • Threonine 4% RDI 43mg
      • Tryptophan 4% RDI 10mg
      • Tyrosine 3% RDI 25mg
      • Valine 3% RDI 55mg
      Protein Comparison Table

      Table Legend

      1. Romaine Lettuce
      -- = missing data
      Amino Acids
      Food # 1 Total
      Weight (g) 100 100
      Essential  
      Histidine (mg)
      (%RDI)      		 21
      (3%)      		 21
      (3%)
      Isoleucine (mg)
      (%RDI)      		 45
      (3%)      		 45
      (3%)
      Leucine (mg)
      (%RDI)      		 76
      (3%)      		 76
      (3%)
      Lysine (mg)
      (%RDI)      		 64
      (3%)      		 64
      (3%)
      Methionine (mg)
      (%RDI)      		 15
      (2%)      		 15
      (2%)
      Phenylalanine (mg)
      (%RDI)      		 65
      (7%)      		 65
      (7%)
      Threonine (mg)
      (%RDI)      		 43
      (4%)      		 43
      (4%)
      Tryptophan (mg)
      (%RDI)      		 10
      (4%)      		 10
      (4%)
      Valine (mg)
      (%RDI)      		 55
      (3%)      		 55
      (3%)
      Conditional  
      Arginine (mg) 54
      		54
      Cystine (mg)
      (%RDI)      		 6
      (2%)      		 6
      (2%)
      Glycine (mg) 49
      		49
      Proline (mg) 45
      		45
      Tyrosine (mg)
      (%RDI)      		 25
      (3%)      		 25
      (3%)
      Non-Essential  
      Alanine (mg) 56
      		56
      Aspartic acid (mg) 139
      		139
      Betaine (mg) 0
      		0
      Glutamic acid (mg) 178
      		178
      Hydroxyproline (mg) --
      		0
      Serine (mg) 50
      		50
      Lysine to Arginine Ratio of All Selected Foods: 1.19
      Data Source
      Romaine Lettuce
      USDA Food Data Central Standard Release (Common)Omega-6 data was extrapolated from undifferentiated-Octadecadienoic Acid (18:2) acid.