Amino Acid Protein Calculator

Enter foods to make sure you are getting all the essential amino acids.
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      Iceberg Lettuce
      ×
      Romaine Lettuce
      ×
      Raw Spinach
      ×
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      Number of Servings:
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      Quick Stats
      • Calories 25 1% DV
      • Protein 2.1g 4% DV
      • Carbs 4.8g 2% DV
      • Fat 0.4g 1% DV
      • Fiber 3g 9% DV
      • Sugar 2g 4% DV
      Amino Acid Bar Charts

      Total Recommended Daily Intake

      • Cystine 6% RDI 17mg
      • Histidine 5% RDI 36mg
      • Isoleucine 6% RDI 78mg
      • Leucine 4% RDI 121mg
      • Lysine 5% RDI 100mg
      • Methionine 4% RDI 27mg
      • Phenylalanine 10% RDI 86mg
      • Threonine 7% RDI 75mg
      • Tryptophan 8% RDI 23mg
      • Tyrosine 6% RDI 49mg
      • Valine 5% RDI 91mg
      Protein Comparison Table

      Table Legend

      1. Iceberg Lettuce
      2. Romaine Lettuce
      3. Raw Spinach
      -- = missing data
      Amino Acids
      Food # 1 2 3 Total
      Weight (g) 72 47 30 149
      Essential  
      Histidine (mg)
      (%RDI)
      6
      (1%)
      10
      (1%)
      19
      (3%)
      36
      (5%)
      Isoleucine (mg)
      (%RDI)
      13
      (1%)
      21
      (2%)
      44
      (3%)
      78
      (6%)
      Leucine (mg)
      (%RDI)
      18
      (1%)
      36
      (1%)
      67
      (2%)
      121
      (4%)
      Lysine (mg)
      (%RDI)
      17
      (1%)
      30
      (1%)
      52
      (2%)
      100
      (5%)
      Methionine (mg)
      (%RDI)
      4
      (0%)
      7
      (1%)
      16
      (2%)
      27
      (4%)
      Phenylalanine (mg)
      (%RDI)
      17
      (2%)
      31
      (3%)
      39
      (4%)
      86
      (10%)
      Threonine (mg)
      (%RDI)
      18
      (2%)
      20
      (2%)
      37
      (3%)
      75
      (7%)
      Tryptophan (mg)
      (%RDI)
      6
      (2%)
      5
      (2%)
      12
      (4%)
      23
      (8%)
      Valine (mg)
      (%RDI)
      17
      (1%)
      26
      (1%)
      48
      (3%)
      91
      (5%)
      Conditional  
      Arginine (mg) 11
      25
      49
      85
      Cystine (mg)
      (%RDI)
      4
      (1%)
      3
      (1%)
      11
      (4%)
      17
      (6%)
      Glycine (mg) 11
      23
      40
      74
      Proline (mg) 7
      21
      34
      62
      Tyrosine (mg)
      (%RDI)
      5
      (1%)
      12
      (1%)
      32
      (4%)
      49
      (6%)
      Non-Essential  
      Alanine (mg) 18
      26
      43
      87
      Aspartic acid (mg) 90
      65
      72
      227
      Betaine (mg) 0
      0
      31
      31
      Glutamic acid (mg) 140
      84
      103
      326
      Hydroxyproline (mg) --
      --
      --
      0
      Serine (mg) 18
      24
      31
      73
      Lysine to Arginine Ratio of All Selected Foods: 1.18
      Data Source
      Iceberg Lettuce
      USDA Food Data Central Standard Release (Common)Omega-6 data was extrapolated from undifferentiated-Octadecadienoic Acid (18:2) acid.Iodine data is obtained from the USDA Iodine database.
      Romaine Lettuce
      USDA Food Data Central Standard Release (Common)Omega-6 data was extrapolated from undifferentiated-Octadecadienoic Acid (18:2) acid.
      Raw Spinach
      USDA Food Data Central Standard Release (Common)Omega-6 data was extrapolated from undifferentiated-Octadecadienoic Acid (18:2) acid.Iodine data is obtained from the USDA Iodine database.