There are a few ways to figure this out. But remember, any site tool that you use is a "guesstimate" and you may have better or worse results once you use the antenna at your location. Many, many things can impact an antenna's reception as you will find if you keep looking through the FAQ's. If you are in a good area for reception, it is pretty amazing!
Mohu is here to help! The most accurate way to find our if an antenna will work for you is to allow us to perform a free signal analysis at your location. Just shoot us an email with your address to email@example.com or give us a call at 877-825-5572.