When you are looking at refinancing a mortgage, there are many factors that you will need to consider before making a final decision. Fortunately, mortgage lenders are beginning to understand that it's good for all parties if their clients are as well-informed as possible before making a lending decision.  This is why there are now a wealth of free tools available online to give homeowners more information about their possible options. Here are a few that you should know about:

Mortgage calculators: A mortgage refinancing calculator can give you an idea on if it makes financial sense to refinance a mortgage at the current interest rate. Taking into account factors such as the principal balance and monthly payments on a mortgage along with current and new mortgage rates, closing costs and more, the calculator will calculate the new mortgage rates along with how long it will take to pay off the closing costs.

Home value projection: Using factors including current home value and location, these calculators will determine an approximate value for your home at certain points in the future. This can be useful in deciding whether it makes more sense to refinance a mortgage or sell the house and buy a new house with different terms.

Mortgage rate comparisons: You can also compare fixed versus adjustable mortgage rates and see which one provides the best value for you in both the short and long term.