This calculator allows you to convert from Acre-foot (US survey) to Teaspoon (metric) and in a reverse direction. To convert from Acre-foot (US survey) to Teaspoon (metric), enter the amount of Acre-foot (US survey) into the first input and to convert from Teaspoon (metric) to Acre-foot (US survey), enter the amount of Teaspoon (metric) into the second input.