Desk height and legroom: setting up a home office work surface
Kitchen tables and old desks often become home office desks by accident. Before buying new furniture, it helps to check the measurements that OSHA's computer workstation guidance focuses on: clearance for your legs, enough depth for the monitor, and edges that do not dig into your wrists.
Legroom under the desk
OSHA states that clearance for the legs under the desktop should generally be between 20 and 28 inches (50 to 72 cm) high. It also asks for enough clearance to change working postures frequently, and for the space to be kept free of files, computer towers, books and storage.
If you use a conventional desk with a center drawer, OSHA suggests removing the drawer when you need more thigh clearance. Measure from the floor to the underside of the desk, not to the top surface.
When the desk is too high or too low
OSHA recommends height-adjustable desks. For a fixed desk that is too low, it mentions stable risers, such as boards or blocks under the legs. For one that is too high, the legs can sometimes be cut down.
If the work surface cannot be lowered, the guidance is to raise the chair instead and add a footrest if your feet no longer rest flat on the floor. This keeps your arms at a comfortable height without leaving your feet unsupported.
Depth for the monitor
Desk depth matters because of viewing distance. OSHA says the work surface should let you view the monitor at a distance of at least 20 inches (50 cm). Shallow desks can force the screen too close. OSHA notes that corner desks may provide additional space and depth for large monitors or multiple items, and a monitor arm can free up depth on a shallow desk.
Edges and contact points
Sharp desk edges press into the forearms and wrists. OSHA suggests buying furniture with rounded desktop edges, padding existing edges with inexpensive materials such as pipe insulation, and using a wrist rest to reduce contact stress.
Checklist before buying a desk
Compare the height range or fixed height on the product page with your seated measurements. Check the clearance under the desktop, the surface depth, and the edge profile. If you are considering a height-adjustable desk, confirm its range covers both your seated and standing heights, and check the merchant's return policy before ordering.
Sources
Last reviewed 2026-11-07.