How to Measure for 96 Inch Blackout Curtains: Getting the Length Right?

Measure 96-inch blackout curtains from the rod or hanging hardware down to your end point — never from the top of the window frame.

A blackout panel that stops two inches short of the floor lets a bright line of daylight run across the room, and the mistake almost always traces back to one thing: measuring from the wrong starting point. The numbers behind How to Measure for 96 Inch Blackout Curtains: Getting the Length Right? are simple once you know where the tape goes.

Here’s the short version. Find your actual hanging point, measure the drop from there to where you want the fabric to end, then check that number at three spots across the window. The rest of this piece walks through each step, the hardware traps that throw the number off, and how to pick a panel length that matches what you measured.

Where Do You Start Measuring a 96-Inch Blackout Curtain?

Start at the rod, the track, or the underside of the curtain rings — whichever your panel will actually hang from. The top of the window frame is irrelevant to the finished drop.

The Home Depot’s curtain measuring guide puts it plainly: for a decorative outside-mount rod, measure from the floor up to the top of the rod. If you’re using curtain rings, measure to the bottom of the rings instead, because the fabric hangs lower than the rod itself.

That ring detail is where most people lose an inch or two. A ring adds roughly an inch of drop depending on its size, and a rod pocket or back tab sits at yet another height. Same rod, same window, three hanging styles, three different finished lengths.

How to Measure the Drop in Three Quick Checks

Measure the drop from your hanging point to the floor at the left edge, the center, and the right edge of the window, then build the curtain around the shortest of the three numbers.

Joydeco’s step-by-step measuring guide recommends exactly this: measure the drop from the rod or hanging hardware at multiple points, because floors and ceilings are rarely level, and use the shortest measurement for a balanced finish. Skip the three-point check and a sloping floor will leave one panel hovering while the other pools on the hardwood.

Working through the numbers looks like this:

• Hold the tape at the rod’s top edge, or at the bottom of the ring if you’re using rings.
• Run it straight down to your target end point — floor, just above the floor, or sill level.
• Repeat at the left, center, and right of the window.
• Write down the smallest of the three, rounding to the nearest half inch.

Dunelm’s guide calls this measurement the “drop” and frames the choice as pick-your-target: sill length, below-sill, or full floor length. Whichever you want, the same shortest-number rule applies.

How Does Your Measured Drop Map to a 96-Inch Panel?

The 96-inch figure describes the panel itself, not the height it hangs at. A 96-inch curtain reaches roughly 96 inches from its hanging point down, so match it to a measured drop near that number.

Standard US curtain lengths run 63, 84, 96, 108, and 120 inches, and 96 is one of the standard long options — a common fit for tall windows and rooms with nine-foot ceilings. If your measured drop lands far from 96, a different standard length will serve you better than hemming a 96.

One more number worth checking before you buy: whether the 96-inch measurement describes a single panel or the pair. Listings use both conventions, so confirm the per-panel length and multiply by the number of panels you need. If you’d rather compare options side by side, this roundup of tested 96-inch blackout curtain panels lays out the lengths and pair counts in one place.

What Mistakes Throw the Measurement Off?

Four errors cause almost every short curtain: measuring from the window frame, ignoring the hardware, measuring once, and mistaking panel length for installed height.

• Measuring from the window frame. The frame sits below the rod, so the curtain reads short every time.
• Ignoring rings, tabs, or rod pockets. Each hanging method changes the finished drop by an inch or more.
• Measuring a single spot. Uneven floors mean one reading can be wrong for the whole window.
• Reading 96 inches as the installed height. It’s the panel length; the hardware decides where it actually ends.

Two practical notes before you drill anything. If a radiator sits below the window, leave about 1.5 inches of clearance above it so heat can circulate, per Dunelm’s guidance. And for blackout performance, hanging the rod a few inches above the trim and wider than the window frame — The Home Depot’s standard decorative-rod placement — cuts the light that sneaks around the edges. Rod mounting style decides how much overlap you need.

Measure the drop, check it three times, match it to the closest standard panel, then confirm your width at the rod. Floor-length 96-inch curtains that bracket the window on all sides do the most for a dark room.