what is the weight of an average upright piano?
Types of pianos and their weight. 1  Upright piano: Also known as a Spinet piano, this is your standard piano that you might find in a school's music room, one with a flat back that stands upright. On average, one of these pianos might weigh anywhere from 300-350 pounds. Baby grand piano: This kind of piano is pretty much exactly what the name sounds like -- it's much like a grand piano, only slightly smaller. A typical baby grand piano can weigh around 500 pounds, on average.