Updated October 2026
In a small room, hang the curtain rod about halfway to two-thirds of the way between the top of the window frame and the ceiling, or at least 4–6 inches (10–15 cm) above the frame if the gap is small. Extend the rod 4–10 inches (10–25 cm) past the frame on each side, so open curtains sit on the wall instead of over the glass. Choose curtains about 2–2.5 times the window's width, long enough to float about ½ inch (1 cm) above the floor.
Done this way, curtains make a low, narrow room look taller and let in more daylight. This guide gives the exact measurements, a worked example and the mistakes that make small rooms look smaller.
How high should you hang curtains?
Higher than the window frame, almost always. Taskrabbit's guide (updated July 2026) recommends placing the rod about ½ to ⅔ of the way between the top of the window trim and the ceiling, or 4–6 inches above the trim where space is tight. Drapery Rods Direct suggests roughly halfway, and for the strongest height illusion, mounting the rod about an inch below the ceiling.
In a small room with a standard ceiling, we usually go as high as the ceiling allows, leaving just enough space for brackets and rings. The higher line draws the eye up and makes the window, and the wall, read taller. Drapery Rods Direct sets a minimum of 2 inches (5 cm) between the top of the window casing and the rod, and Taskrabbit suggests keeping at least 2 inches between the rod and the ceiling.
How wide should a curtain rod be?
Wider than the window by 8–20 inches (20–50 cm) in total. Taskrabbit recommends brackets 4–6 inches beyond each side of the frame. Drapery Rods Direct allows up to 10 inches each side to make a window look wider.
In small rooms, go toward the wider end. When curtains are open, the fabric bunches at each side, called the stack. If the rod is only slightly wider than the window, that stack sits over the glass and blocks daylight. A wider rod parks the stack on the wall, so the whole window is clear and the room gets more light.
How wide should curtains be?
The combined width of your curtain panels should be about 2 to 2.5 times the width of the window, so they look full when closed. Drapery Rods Direct notes that light fabrics may need more fullness and heavy fabrics less. For a pair of panels, that usually means each panel is about as wide as the window.
Skimpy curtains are one of the most common reasons a room looks unfinished. If budget is tight, buy fewer, wider panels in a cheaper fabric rather than narrow panels in an expensive one.
How long should curtains be?
Long enough to reach the floor. A float, about ½ inch (1 cm) above the floor, is the neatest and easiest to clean. Taskrabbit and Drapery Rods Direct both mention a puddle, where the fabric pools on the floor, for a softer look, but in a small room or rental we avoid it: it collects dust and gets caught in doors and vacuums.
Avoid curtains that stop at the windowsill or hover several inches above the floor in living rooms and bedrooms. They cut the wall in two and make the ceiling look lower. Ready-made curtains commonly come in 84, 96 and 108 inch lengths (about 213, 244 and 274 cm), so you'll often need to buy the next size up and hem them.
A worked example
A small bedroom with a 96 in (244 cm) ceiling and a window 48 in (122 cm) wide. The top of the window trim is at 84 in (213 cm).
Rod height: the gap above the trim is 12 in. Two-thirds of the way up is 92 in (234 cm), which leaves 4 in below the ceiling for brackets.
Rod width: 48 in window + 8 in each side = 64 in (163 cm). Buy an adjustable rod that covers that span.
Curtain width: 48 in × 2–2.5 = 96–120 inches in total (244–305 cm), so two panels of about 50–60 in each.
Curtain length: measure from the bottom of the rings or hooks to the floor, then subtract ½ in. With rings hanging about 1 in below a 92 in rod, that's about 90½ in (230 cm). Buy 96 in panels and hem them.
Always measure your own window and ceiling at several points. Older buildings often have floors and ceilings that aren't level, so measure at both ends of the rod.
What curtains work best in a small room?
Color close to the wall. Curtains in a similar tone to the walls add height without adding a strong new edge. Our guide to paint and LRV explains why lower contrast makes small rooms feel larger.
Light, unlined fabric in living areas to filter daylight, and lined or blackout curtains in bedrooms.
A ceiling track where there is no room above the window for a pole, or where you want curtains to run edge to edge across a whole wall.
Simple headings. Ring tops and pinch pleats stack more compactly than tab tops or gathered headings.
For rentals and holiday lets: blackout linings in sleeping areas, machine-washable fabric, and a sturdy rod that guests won't pull down.
Common curtain mistakes in small rooms
Mounting the rod directly on top of the window frame, which makes the ceiling look lower.
A rod barely wider than the window, so open curtains still cover the glass.
Panels too narrow to look full when closed.
Curtains that stop short of the floor in living rooms and bedrooms.
Heavy, dark curtains against pale walls, which create a hard frame around the window.
FAQ
How many inches above the window should curtains hang?
At least 4–6 in (10–15 cm), and ideally about halfway to two-thirds of the way to the ceiling. In small rooms, we go as close to the ceiling as the brackets allow.
How far should a curtain rod extend past the window?
About 4–10 in (10–25 cm) on each side, so the curtains clear the glass when open.
Should curtains touch the floor?
Ideally they should float about ½ in (1 cm) above it. That reads as floor-length but stays clean.
Do floor-length curtains make a room look bigger?
Yes, when they are hung high and wide. They create an unbroken vertical line that makes the ceiling look higher.
How Desynte can help
Curtains are one of the cheapest ways to change how big a room feels, but they work best once the layout is right. Our free Floorplan Self-Audit includes light, zoning and sizing checks for small apartments. For a full room plan including window treatments, see Remote Design.
