What is a act score of 19 equivelent to sat score?

There's no single perfect equivalent between ACT and SAT scores because the tests measure slightly different things and have different scoring scales. However, a general conversion often puts an ACT score of 19 in the range of a SAT score between 1000 and 1100. Keep in mind that this is an approximation, and the actual equivalent could vary slightly depending on the specific test version and the student's individual strengths and weaknesses.