Do use curtains that reach the floor. Your curtains should either be 1/2” above the floor, kiss the floor, or puddle on the floor. For 8' ceilings, I recommend standard 96” curtains which you can then adjust up and down or hem up the bottom if needed.
Ready-made curtains generally come in standard lengths: 84 inches for 8-foot ceilings, 96 inches for 9-foot ceilings and 108 inches for 10-foot ceilings. If you like to puddle your curtains, simply buy one size up.
Do not allow your drapes to hang above the floor. When they stop a couple of inches above the floor, it can make the ceilings look lower. For drapes to look full, the panels should have a combined width of at least double the width of the window.
Measure the distance from the top of the rod or track to the floor, . If you're hanging your curtains on the ceiling, measure from the ceiling.
Standard curtains typically hang from about a half-inch from the floor to halfway between the window trim and average-height ceiling. But to maximize visual height, let the walls determine your curtain's length; in a living room, library, den or bedroom, the longer the panels, the better.
When hanging curtains, it is important that the curtains are the right length. Curtains that are too short make the room look short, stubby and awkward. The cut the length of the wall, making both the window and the room look smaller. An example of curtains that are way too short!
Interior designers note the bottom of your curtains should fall to the floor, and you can even let them “puddle” a bit. However, if you don't want your curtains to drag on the floor when you open and close them, let them stop about an inch from the floor, but no more.
"Extending your draperies from floor to ceiling and from wall to wall surrounding your window makes them appear bigger," explains Francesco Bilotto.
While fashion once dictated a “flood level” bottom line for curtains—one that hung just past the window sill, short enough that it would not get wet in a flood—today, style calls for curtains to either hang down to within ½-inch of the floor or even puddle slightly.
If you are interested in stationary panels, you will want your curtains to be long enough to lightly brush the floor, but not so long that they bunch up in a pile. A good rule of thumb is for your curtains to break anywhere from a ¼” to ½” from the floor, similar to a break in pant legs on your shoe.
Hanging your curtains at ceiling level maximizes the light that shines through your window and it makes the room feel larger because the walls look taller. This works well in a small space, but may not be ideal in a room that is already too large.
For a 9 foot ceiling, pick 96-inch curtains. Typically, your curtain rod is hung about a foot from the ceiling. 96 inches covers the distance between the floor up to one foot from the ceiling.
In most cases, curtains should be a foot shorter than the height of the ceiling such that it is ideal to choose 9 feet long curtains for ceilings that are 10 feet high. You are supposed to be installing the curtains from the floor up, and that the curtains should be about half a foot higher than the window frame.
Standard curtains come in three lengths—84 inches, 96 inches, or 108 inches. "Generally, you want to stay away from the 84 inch standard curtains unless you have very low ceilings. They don't look right in most scenarios and end up being an awkward length," says Curtis.
Sill Length
These are the shortest of the standard curtain lengths, which makes them a good opportunity to have some fun with pattern or color. Since they take up less visual space, you won't get tired of a bold choice.
The material should barely touch the floor or hover half an inch above. Use this approach for café curtains, too, short panels covering only the lower portion of a window, hitting the sill, which works well in kitchens and bathrooms, where long drapes or curtains aren't practical.
Soto follows what she calls the cantaloupe rule: "Decorative accents that are smaller than a cantaloupe cramp a room." Opt for a single, statement-making piece instead. Photo by iStockphoto. Media Platforms Design Team.
An 8 foot ceiling is pretty standard for a residential home. With this standard height will be safe to put the rod about 6 inches above the top of the framing of the window. This avoids any extra framing and gives space between the frame and the rod.
Tiebacks slightly shorten curtains. This is why they don't work well with short bedroom curtains. Since shorter curtains form a small bundle when compacted, they look less appealing with the use of tiebacks. So, if you want to pull off short bedroom curtains, push them to the side instead of tying them.
As a general rule of thumb, curtain width should be two to two-and-a-half times the width of the window. Curtains are typically sold as pairs, but you may need to double up depending on the size of your window.
The ideal curtain length for a 12-foot ceiling is 132 inches. A panel of this size will cover the distance between the floor, all the way up to one foot from the ceiling.
The top of most of our windows are 8ft, and we used 108″ panels almost everywhere. So we hung our curtain rod about 13 inches above the windows. The higher the curtain rod, the taller your window will appear. I recommend to always install a rod closer to the ceiling than the top of the window.
Ready-made curtains come in a series of standard sizes, based on ceiling height. Curtain sizes are approximately 12-inches less than the ceiling height of the room they hang in. For a 10-foot ceiling, the correct curtain size is 108-inches.
When you buy them in stores or online, there are two standard lengths: 84 inches and 95 or 96 inches. The length of the curtain dictates the height of the rod. If you buy 84-inch-long curtains, the rod must be mounted roughly 84 inches from the floor if the curtains hang from the rod without rings.