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.
How Wide Should Curtains Be For A 100-Inch Window? The average curtain bought to hang on a 100-inch window should measure between 200 and 250 inches wide. To achieve appropriate fullness with thinner material, get curtains upward of 300 inches wide. For decorative purposes, you can go 150 inches in width.
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.
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.
How wide should curtains be? To ensure that curtain panels look ample when closed, they should have a combined width that is 2 to 2.5 times the width of the window/rod. That means if you are ordering Grommet style or Rod-pocket style, the total drapery width should be at least 2 times the window/rod widths.
Measure the Width
If you want your curtains to close and cover the entire window: Measure the width of your window. Add 12 inches to each side, 24 inches total. Take the total number (width plus the number you added to each side) and divide that number by how many drapery panels you want in the window.
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”.)
In the US, the standard curtain width would be 54”. But generally, it ranges from 50-58”. Some curtain manufacturers even go for as long as 108”. Again, knowing the curtain width is as essential as the length because you have to align it with standard curtain sizes.
For the width, take your steel tape measure and take the full length measurement of your pole or track. For pencil pleats on a track, measure the drop by starting from the top of the track, and for pencil pleats on a curtain pole, measure from the eye of the curtain rings (where you'll be hooking your curtains into).
The standard curtain width is always 2, 2.5, or 3 times the width of the window. So the formulas used to calculate the width of your curtain is: Standard curtain width = width of window × 2. Deluxe curtain width = width of window × 2.5.
In most cases, you will need four panels for a double window. If you want to go for a flat or wispy look, then you can get by with two panels as long as they are wide enough to cover the entire window.
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'.
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.
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.
How High to Hang Curtains. A rule of thumb (from Architectural Digest) is that curtains should be hung between four to six inches above the window frame, so install your curtain rod accordingly. When you hang the curtain rod high, it will make the window appear taller.
Most curtain designs come in standard drop sizes of 54”, 72”, 90” and 108” so you may have to round up to the nearest size. For example, if you measure your drop and it is 147cm (58”) in length and you wanted your curtains to sit off the floor you would round this up to the 72” drop curtains.
If you are interested in a curtain with grommet tops, there will usually be an inch and half of fabric above the top of the grommet. Therefore, an 84 inch length curtain with grommet tops will have an actual hanging height of around 82.5 inches.
Determine the number of panels you need to order: ~ Multiply window width by 1.5 to 2 if you want curtains loosely gathered for a relaxed, tailored look. Divide your total by the width of a single curtain panel to get the number of panels you need.
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. To create the illusion of a wider window, extend the rod up to 10 inches beyond the window's frame.
Generally, grommets are spaced about 6 inches apart on center. The first and last grommet are inset the space needed for the return to the wall, and in front of the window at the leading edge. If there is a window frame, blinds or shades on the window, you will want the spacing to clear what is behind the rod.
Consider sewing two panels together so you don't have to draw each one separately and they don't gap when closed. You could even sew all three panels together and cut the middle panel down its center. Hem back the sides to create two panels of equal size for a more traditional look.
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.
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.
Floor length: Long curtains that go from above your window frame all the way to the floor to create a traditional, formal look. Typical curtain length for this style is 84 to 96 inches; these curtains will fall about 1/4-inch above the floor.
The width measurement actually refers to the width of each curtain in the pair, as you need double the width of your track or pole in curtaining for the gathered effect.