How to Measure Curtain Length (Floor vs Sill vs Puddle)
Quick answer: curtain length = distance from the rod to where you want the hem. For floor-length curtains, that's usually 84–96 in for a standard 8-ft ceiling. Here's how to measure precisely for every look.
- Measure from the rod
- Floor vs sill vs puddle
- Width and fullness
- Rod placement
- Worked example
- Common mistakes
Measure from the rod
Always measure from the top of the rod (or where the curtain will hang) to the desired hem, not from the window frame. Mount the rod before measuring. For standard 8-ft ceilings, floor-length curtains are typically 84 in; for 9-ft ceilings, 96 in.
The key rule: your curtain length = the vertical drop from the rod's top to where you want the hem. Two identical windows will need different curtain lengths if one rod is mounted higher. Measure the actual drop, don't guess by window size.
Floor vs sill vs puddle
| Style | Hem position | Length |
|---|---|---|
| Sill | Just above the window sill | Shorter, casual |
| Apron | Just below the sill | Mid, farmhouse |
| Floor | 1/2 in above the floor | Most common |
| Puddle | On the floor (2–6 in) | Formal, dramatic |
Floor-length is the safe default for living rooms and bedrooms. Puddle curtains read formal but gather dust and can look messy if they aren't perfectly styled; sill length suits kitchens and casual spaces where long curtains would get in the way.
Width and fullness
Width matters too: panels should be about 1.5–2× the window width for a full look. For a 48-in window, buy panels totaling ~72–96 in. Fullness also affects how the length hangs — gathered panels may appear slightly shorter.
For two panels, each panel should be roughly 0.75–1× the window width, so two panels on a 48-in window are about 36–48 in each. Buying exactly the window width leaves the panels looking flat and skimpy.
Rod placement
Mount the rod 4–6 in above the frame (or halfway between the frame and the ceiling) for a taller look. Then measure from there. Standard curtains come in 84-in and 96-in lengths; buy the one closest above your measurement.
Extend the rod 4–8 in past each side of the frame so the panels can be pulled fully open and the window appears wider — this small placement change makes a big visual difference.
Worked example
- Rod at 8 ft ceiling, mounted 5 in above frame
- Distance to floor = ~86 in
- Choose 84-in curtains for a 1/2-in-above-floor look, or 96-in and hem them
Common mistakes
- Measuring the window, not the rod. Length starts at the rod.
- Buying too short. Curtains that stop mid-sill look unfinished.
- Ignoring fullness. Too-skinny panels don't hang right.
- Not accounting for header. Rod-pocket headers shorten the drop — read the panel spec.
- Forgetting the rod sits above the frame. The frame isn't the top of the curtain.
FAQ
Floor-length curtains for an 8-ft ceiling are usually 84 inches. For a 9-ft ceiling, choose 96 inches.
Not exactly — floor-length curtains should hover about 1/2 inch above the floor for a clean look. Puddle curtains intentionally lie on the floor for a formal effect.
Aim for 1.5–2 times the window width in total panel width for a full, gathered look. A 48-inch window needs about 72–96 inches of curtain.
Mount the rod 4–6 inches above the window frame, or about halfway between the frame and the ceiling, to make the window look taller.