Amino Acid Protein Calculator

Enter foods to make sure you are getting all the essential amino acids.
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      Butterhead Lettuce
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      Quick Stats
      • Calories 7 0% DV
      • Protein 0.7g 1% DV
      • Carbs 1.2g 0% DV
      • Fat 0.1g 0% DV
      • Fiber 1g 2% DV
      • Sugar 1g 1% DV
      Amino Acid Bar Charts

      Total Recommended Daily Intake

      • Cystine 2% RDI 5mg
      • Histidine 1% RDI 9mg
      • Isoleucine 2% RDI 21mg
      • Leucine 1% RDI 39mg
      • Lysine 1% RDI 31mg
      • Methionine 1% RDI 8mg
      • Phenylalanine 3% RDI 29mg
      • Threonine 2% RDI 23mg
      • Tryptophan 3% RDI 7mg
      • Tyrosine 1% RDI 10mg
      • Valine 2% RDI 30mg
      Protein Comparison Table

      Table Legend

      1. Butterhead Lettuce
      -- = missing data
      Amino Acids
      Food # 1 Total
      Weight (g) 55 55
      Essential  
      Histidine (mg)
      (%RDI)
      9
      (1%)
      9
      (1%)
      Isoleucine (mg)
      (%RDI)
      21
      (2%)
      21
      (2%)
      Leucine (mg)
      (%RDI)
      39
      (1%)
      39
      (1%)
      Lysine (mg)
      (%RDI)
      31
      (1%)
      31
      (1%)
      Methionine (mg)
      (%RDI)
      8
      (1%)
      8
      (1%)
      Phenylalanine (mg)
      (%RDI)
      29
      (3%)
      29
      (3%)
      Threonine (mg)
      (%RDI)
      23
      (2%)
      23
      (2%)
      Tryptophan (mg)
      (%RDI)
      7
      (3%)
      7
      (3%)
      Valine (mg)
      (%RDI)
      30
      (2%)
      30
      (2%)
      Conditional  
      Arginine (mg) 28
      28
      Cystine (mg)
      (%RDI)
      5
      (2%)
      5
      (2%)
      Glycine (mg) 24
      24
      Proline (mg) 20
      20
      Tyrosine (mg)
      (%RDI)
      10
      (1%)
      10
      (1%)
      Non-Essential  
      Alanine (mg) 30
      30
      Aspartic acid (mg) 78
      78
      Betaine (mg) 0
      0
      Glutamic acid (mg) 113
      113
      Hydroxyproline (mg) --
      0
      Serine (mg) 25
      25
      Lysine to Arginine Ratio of All Selected Foods: 1.11
      Data Source
      Butterhead Lettuce
      USDA Food Data Central Standard Release (Common)Omega-6 data was extrapolated from undifferentiated-Octadecadienoic Acid (18:2) acid.