Curtains are an essential element of home decor—they offer privacy, regulate light, and complete the look of any room. But before choosing styles or fabrics, it’s important to understand standard curtain sizes, as they determine how well your curtains will fit and function. Whether you’re refreshing a bedroom, living room, or office, knowing the right curtain dimensions helps you avoid common mistakes and achieve a polished, tailored look.

Standard Curtain Sizes

Curtains come in a range of standard sizes. While custom curtains are an option, many people find exactly what they need from off-the-shelf options. Here are some typical standard curtain lengths in inches (height):

• 63 inches – hits just below the windowsill
• 84 inches – reaches the floor or just above it (ideal for most standard windows)
• 96 inches – pools slightly on the floor or allows for higher curtain rod placement
• 108 inches – great for tall ceilings or dramatic floor-length looks
• 120 inches – used when extra pooling or coverage is desired

Common curtain widths vary depending on the brand but typically range from 40 to 54 inches per panel. Most windows will require two panels for fullness.

How to Measure for Curtains

Getting the right size curtain starts with correct measurements. Here’s how to do it:

1. Measure the Width

• Measure the width of your window frame, not including trim.
• Add 8–12 inches on each side for optimal coverage and visual balance.
• Multiply the final width by 1.5 to 2.5 to determine total curtain width for fullness. For example, if your window is 60 inches wide, aim for a total of 90 to 150 inches of curtain width.

2. Measure the Length

This depends on how high you want to hang the curtain rod and what look you’re going for:

• Sill-length: Ends at or just below the window sill (63" standard)
• Apron-length: Ends a few inches below the sill
• Floor-length: Ends ½ inch above the floor (typically 84" or 96")
• Puddle-length: Extends onto the floor for a dramatic look (108" or 120")

Start measuring from the top of the curtain rod to your desired stopping point.

Types of Curtain Mounts and Their Impact on Size

How you hang your curtains affects the final size you'll need:

• Rod pocket curtains: The rod goes through a sewn pocket. Add height to compensate for fabric gathered above the rod.
• Grommet or eyelet curtains: The rod threads through rings; measure from the top of the rod to the desired bottom point.
• Tab top curtains: The rod goes through fabric loops; these usually hang a bit lower.
• Curtains with rings/clips: Measure from the bottom of the rings to where you want the curtains to end.

Tips for Choosing the Right Curtain Size

• Go high and wide: Hanging your curtain rod 4–6 inches above the window frame and extending it beyond the sides makes windows appear larger.
• Consider layering: Combine sheer and opaque curtains to add flexibility and texture—ensure both are measured appropriately.
• Custom is best for tricky spaces: For arched windows, bay windows, or non-standard sizes, custom curtains might be worth the investment.

Final Thoughts

Choosing the right curtain size isn’t just about fitting a window—it’s about enhancing the look and feel of your space. By measuring carefully and understanding the options, you can create a tailored, elegant finish that complements your décor and functional needs.

Whether you're buying off the shelf or going custom, having a clear idea of the measurements and standard sizes helps you make the best choice with confidence.