Below are several tools that can be used to determine information about loans that you have already taken or that you are considering. The tools perform different functions and each has a short description of what it will do.

Loan Payment Calculator – that provides an estimate of the monthly loan payments and suggests an annual income necessary to make the monthly payments.
Undergraduate student loan advisor – that provides an estimate of the amount of educational debt you can reasonably afford.
Master's student loan advisor – that provides an estimate of the amount of educational debt you can reasonably afford.
Doctoral student loan advisor – that provides an estimate of the amount of educational debt you can reasonably afford.
Parent loan advisor – that provides parents with an estimate of how much educational debt they can reasonably afford for their children's education.