With this loan calculator, you can find out how much you'll need to pay back month-by-month based on an interest rate and the duration of the loan. Enter the amount you wish to borrow, for how long and the interest rate and you'll get back the monthly payment cost plus the total you'll need to pay plus interest.
If you want to find out the maximum amount you can borrow based on the amount you can afford to pay back a month and the duration of the loan, go to the second tab in the form above.