Will three 24-inch monitors fit on a 63-inch desk?

How this is calculated

A 63-inch (160 cm) desk almost always pairs with a 31.5-inch (80 cm) depth, which is generous for three 24-inch panels. Each 24-inch native stand uses roughly 6-7 inches (15-18 cm) of depth, leaving about 24 inches (61 cm) of keyboard and mouse surface and a roughly 24-26 inch (61-66 cm) viewing distance. That is the comfortable range for 24-inch 1080p panels, whose 92 PPI stays legible at that distance.

Verdict

The 63-inch (160 cm) width is essentially flush against three 24-inch panels flat, which span about 62.7 inches (159 cm), so there is no real margin before you angle anything. Angling the outer screens 20 degrees inward drops the footprint to about 60.2 inches (153 cm) and gives back roughly 1.4 inches (3.6 cm) per side, which is the move that keeps the layout from looking crammed against the desk edges. The 31.5-inch (80 cm) depth is doing most of the comfort work here: the 24-inch native stand consumes 6-7 inches (15-18 cm) but leaves roughly 24 inches (61 cm) of keyboard surface and a 24-26 inch (61-66 cm) viewing distance that sits in the ergonomic band for 92 PPI panels. A triple-monitor arm with a VESA 100x100 head reclaims the stand depth and is worth it for cable management, but unlike the 48-inch dual case this layout is usable on the included stands.