Curtain Length Rules for Every Type of Window

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When it comes to interior design, curtains can make or break a room.

Maybe you need to block out the morning light so you can get your beauty sleep. Or you want to make the room look taller and roomier. Maybe you’re looking for the perfect curtain shade to complete your living room redesign.

All the Pinterest research, curtain shopping and design hacks in the world won’t help you if your curtains aren’t the right length and size.

Whether you’re looking for sheer curtains for a subtle finishing touch or gorgeous, dramatic drapery, you need to make sure the curtain length is correct. In this blog post, you’ll learn:

  • How to determine the right curtain length for your window.
  • Top curtain-hanging mistakes to avoid.
  • How to measure curtain length for the style you want.

Curtain Length Rules: What Size Curtains Do I Need?

You’ve found the perfect curtains for the room. How do you know what size you need? How long should they be?

Curtain length rules vary depending on the size and style you’re looking for. The standard sizes for curtain and drapery panels are 63, 84, 95, 108 and 120 inches long.

When choosing curtains, there are a few common mistakes we see all the time. Make sure you keep the following in mind:

Make sure the curtains are long enough. The most common curtain mistake. Similar to the flood pants trend, short curtains are just painful to look at. It’s the least flattering look and makes a room look awkward and incomplete.

Buy the right-size curtain rods. When shopping for curtain rods, the first instinct is to purchase rods to match the width of your window. But if your curtain rod is the exact width of the window, your curtains will block the window even when they’re open, making the window look smaller and blocking light.

Curtain rods should extend at least six inches past the window so you can see the entire window.

Use enough fabric. You want your curtains to feel full, not skimpy. If you’re getting pre-made panels, make sure you get enough curtain panels to cover the entire window. A 60-inch-wide panel won’t look good on a 60-inch window — you’ll need multiple curtain panels to get enough fullness. Curtains are typically sold as pairs, but you may need to double up depending on the size of your window.

As a general rule of thumb, curtain width should be two to two-and-a-half times the width of the window.

How to Measure Curtain Length

Curtain length rules vary depending on the style of curtains you want. Here’s how to measure curtains to determine the right length.

Step 1: Decide Your Curtain Style

To get the right curtain length, you need to decide what style you want. There are three ways to hang curtains correctly:

Float: The curtains “float” just above the floor. The float is a good option if you want your curtains to hang completely straight down without any break. Make sure to hang curtains less than an inch above the floor — any longer, and it will look awkward.


Kiss: The curtains barely touch the floor. The kiss is the most difficult style to hang correctly. It requires exact, precise measurements. Don’t forget to measure not only the length of your curtains, but also the curtain rods and length of your curtain rings.


Puddle: The curtains are slightly longer, so they flare out in a “puddle” on the floor. This style has a romantic, feminine, old world feel. It’s a great option for drapery in more traditional and formal rooms. The puddle style works best with high-quality, thick fabric like lined drapery, velvet or linen. It’s meant to showcase the fabric, so don’t skimp on quality here.


Step 2: Measure the Window

Length: Place the measuring tape at the top or inside corner of the window frame.

Measure straight down to your desired length:

  • Float: Less than an inch above the floor.
  • Kiss: Measure the distance from the curtain rod to the floor. If you’re using curtain rings, make sure to include those in your length measurements.
  • Puddle: Measure straight down to the floor. Add 15 inches to the length to ensure you have enough fabric to create a pooling effect.

Pro tip: Use a metal tape measure for better accuracy when measuring.

Hang Curtains in Minutes With Kwik-Hang

Hanging curtains is infamously tricky. One wrong move and you can damage a wall, add unnecessary holes and cause a lot of frustration.

Kwik-Hang solves your curtain-hanging problems. The patented, revolutionary design lets you hang curtains in seconds so you can move onto the next item on your to-do list.

Once you’ve found the perfect length curtains, place the bracket on your window frame, tap it in and you’re good to go.

kwik hang no drill curtains curtain length rules

Ready to try it? Test out our Kwik-Hang curtain rod brackets risk-free today!

Kwik-Hang Damage-Free Curtain Rod Brackets

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