Each curtain panel should be at least as wide as your window. Measure from the spot you plan to hang the rod (usually four to six inches above the window, but a minimum of two inches) to the floor to figure out the length of the curtains. Add more length if you want the drapes to pool.
To get the measurements, measure the width of the rod from left to right. For instance, if your window measures 72” wide, you will need curtains that will give a maximum width of 144” (window width x 2 = 144”.)
The rule of thumb is to go 8″-12″ wider than your window.
The standard distance from the window casing to the end of the curtain rod (excluding finials) on each side of the window should be four to 10 inches. As a general rule, drapes will be open during the day, so make sure the curtain rod extends at least four inches on each side of the window's inside frame.
The proper position is ½ inch above the floor for free hanging curtains. This distance allows for mopping and cleaning while creating the illusion that the curtain touches the floor.
If you have the space between the top of your window frame and the ceiling or crown molding, though, you should hang the rod over the window. I like to go 3 to 5 inches down from the ceiling. Doing this visually extends the length of your wall, making your ceiling look higher.
How High to Hang Curtains 8 Foot Ceiling. 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.
A common rule for displaying curtains properly says the curtains finished width should be at least 2 times the width of your window (if not more - sheers can be 3 times the window width) to achieve a look of proper fullness.
For example, for a 60-inch window with two curtain panels, add 24 inches to 60 inches (window width) and divide by 2 (number of panels) to get 42 inches. The two panels ordered each need to be at least 42 inches wide.
Keep in mind that the width measurement is flat. If you hang a 48-inch panel on a 48-inch window, there will be no fullness or draping. According to Curtainshop.com, finished curtains should be twice the width of the window, so if your window is 36 inches wide, you need panels that are at least 72 inches across.
For a 120-inch window, how wide should curtains be? Depending on the weight of the fabric and how much you want the curtains to be. At least a width and a half is what I would recommend. 180 inches is the width of each curtain.
Following the rule of thumb, curtains for a 96-inch window should range between 192 and 240 inches wide. To get a fuller look, aim for 288 inches wide.
Example: If your window measures 36″ wide (window width x 2 = 72″), you need curtains that will give a minimum width of 72″ or 2 panels for that window. In this case 2 panels will give about 100″ to 120″ of width which will look nice and full.
For example, if the window is 100 inches wide, the curtains should be made to 125 inches wide in order for them to hang off the window when in the open position. For an inside-mount curtain, measure from one edge inside the frame to the inside edge on the opposite side.
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.
Curtain rods should extend at least 3 to 6 inches past the window frame. Just as hanging curtains above the window frame makes the window appear taller, Bob Vila writes that extending the curtain rod past the window frame makes the window appear wider.
In Closing. For a 9-foot ceiling, 96-inch curtain panels are typically a good fit. This allows you to hang curtains that reach the floor, with the rod placed one foot from the ceiling. If you prefer curtains that pool on the floor or curtains that hang higher, just pick the next size up.
"Extending your draperies from floor to ceiling and from wall to wall surrounding your window makes them appear bigger," explains Francesco Bilotto.
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.
The actual amount of gather depends on heading styles and personal preference, but as a general rule the width of your curtains should amount to double the width of your track. This is referred to as 'two times gather'.
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.
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.
It is often best to use the 4 to 6 inches above the window trim rule here unless the windows stretch close to the high ceilings. If there is little space between the trim and the ceiling, then hang the curtains 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.
The height of your home's ceilings often determines the length of your curtain panels, as builders usually install taller windows in homes with higher ceilings. 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.