A standing desk converter is a sizable attachment that’s meant to be placed on top of a traditional desk or tabletop. They tend to be cheaper and easier to set up thanks to universal design. Standing desks, on the other hand, are full-size desks with a height-adjustable function built-in. Most standing desks have a motor that will move the desktop up and down at the press of a button. Some must be manually adjusted, however. The biggest difference between them is that one is meant as more of an attachment or add-on, and the other is a full-size piece of furniture. Standing desks tend to be much more expensive and don’t generally come pre-assembled.