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 8 0% DV
      • Protein 0.6g 1% DV
      • Carbs 1.5g 1% DV
      • Fat 0.1g 0% DV
      • Fiber 1g 4% DV
      • Sugar 1g 1% DV
      Amino Acid Bar Charts

      Total Recommended Daily Intake

      • Cystine 1% RDI 3mg
      • Histidine 1% RDI 10mg
      • Isoleucine 2% RDI 21mg
      • Leucine 1% RDI 36mg
      • Lysine 1% RDI 30mg
      • Methionine 1% RDI 7mg
      • Phenylalanine 3% RDI 31mg
      • Threonine 2% RDI 20mg
      • Tryptophan 2% RDI 5mg
      • Tyrosine 1% RDI 12mg
      • Valine 1% RDI 26mg
      Protein Comparison Table

      Table Legend

      1. Romaine Lettuce
      -- = missing data
      Amino Acids
      Food # 1 Total
      Weight (g) 47 47
      Essential  
      Histidine (mg)
      (%RDI)      		 10
      (1%)      		 10
      (1%)
      Isoleucine (mg)
      (%RDI)      		 21
      (2%)      		 21
      (2%)
      Leucine (mg)
      (%RDI)      		 36
      (1%)      		 36
      (1%)
      Lysine (mg)
      (%RDI)      		 30
      (1%)      		 30
      (1%)
      Methionine (mg)
      (%RDI)      		 7
      (1%)      		 7
      (1%)
      Phenylalanine (mg)
      (%RDI)      		 31
      (3%)      		 31
      (3%)
      Threonine (mg)
      (%RDI)      		 20
      (2%)      		 20
      (2%)
      Tryptophan (mg)
      (%RDI)      		 5
      (2%)      		 5
      (2%)
      Valine (mg)
      (%RDI)      		 26
      (1%)      		 26
      (1%)
      Conditional  
      Arginine (mg) 25
      		25
      Cystine (mg)
      (%RDI)      		 3
      (1%)      		 3
      (1%)
      Glycine (mg) 23
      		23
      Proline (mg) 21
      		21
      Tyrosine (mg)
      (%RDI)      		 12
      (1%)      		 12
      (1%)
      Non-Essential  
      Alanine (mg) 26
      		26
      Aspartic acid (mg) 65
      		65
      Betaine (mg) 0
      		0
      Glutamic acid (mg) 84
      		84
      Hydroxyproline (mg) --
      		0
      Serine (mg) 24
      		24
      Lysine to Arginine Ratio of All Selected Foods: 1.2
      Data Source
      Romaine Lettuce
      USDA Food Data Central Standard Release (Common)Omega-6 data was extrapolated from undifferentiated-Octadecadienoic Acid (18:2) acid.