4 - TSP is for one gallon.


1 teaspoon= 5ml
3 teaspoon= 1 Tbsp= 15ml
2 Tablespoons= 1 oz= 30ml
1 cup= 8 oz= 236ml
2 cups= 1 pint=16oz= 473ml
2 pints= 1 qt=32oz= 946ml
4 quarts= 1 gallon=128 oz= 3785ml= 3.785 Liters