If you’ve ever struggled with curtains that are too short, too narrow, or unevenly hung, you’re not alone. One of the most common questions homeowners ask is, “How do I measure for curtains?” Whether you’re shopping for ready-made panels or investing in made-to-measure curtains, accurate measurements are essential for a polished, professional look.

Key Takeaways:

 

This guide breaks down every step of how to measure curtains, from windows to outdoor spaces, ensuring your drapes fit flawlessly.

 

How Do You Measure Curtains for a Window?

The first step in measuring curtains is determining whether you want an inside mount (curtains hang inside the window frame) or an outside mount (curtains extend beyond the frame). Most homeowners prefer outside mounts for fuller coverage and a more luxurious appearance.

Tools You’ll Need:

  • Steel measuring tape
  • Pencil and paper (or a smartphone note)
  • Step stool (for tall windows)

Steps:

Measure the Width:

  • For outside mounts: Measure the width of the window frame plus 4–6 inches on each side. This ensures curtains don’t block light when open.
  • For inside mounts: Measure the exact width of the window recess.

 

Measure the Height:

  • For outside mounts: Measure from the floor (or desired drop point) to the top of the window frame. Add 1-2 inches if you want curtains to “break” slightly on the floor.
  • For inside mounts: Measure from the top of the window recess to the sill.

Pro Tip: If your windows are uneven, measure at the top, middle, and bottom, then use the smallest measurement to avoid gaps.

 

How to Measure Length of Curtains

Curtain length depends on your style preference and the room’s function. Here are the most common options:

Floor-Length Curtains

  • Ideal for living rooms, dining rooms, and bedrooms.
  • Measure from the curtain rod to the floor. Subtract 1 inch for a “floating” look.

 

Sill-Length Curtains

  • Perfect for kitchens and bathrooms.
  • Measure from the rod to 1 cm above the windowsill (for a clean look) or 15 cm below (for a casual drop).

 

Café-Style Curtains

  • Great for kitchens and casual spaces.
  • Measure from the rod to halfway down the window (typically 60–70 cm from the top).

 

Puddling Curtains

  • Luxurious for formal rooms.
  • Add 10–15 cm (3 - 6 inches) to the floor measurement for extra fabric that pools on the ground.

Key Point: Always measure after installing the curtain rod—its height affects the final length.

 

How to Measure Width for Curtains

Curtain width determines fullness and how the fabric drapes. Too narrow, and they’ll look skimpy; too wide, and they’ll bunch awkwardly.

 

Steps:

Measure the Window Width:

  • For outside mounts: Use the total width measured earlier (window frame + extra on each side).
  • For inside mounts: Use the exact width of the window recess.

 

Calculate Curtain Panel Width:

  • Multiply the window width by 1.5–2 for standard fullness.
  • Example: If your window is 60 inches wide, you’ll need curtains that are 90–120 inches wide in total (two 45–60-inch panels).

 

Choose Number of Panels:

  • Single-panel curtains work for narrow windows.
  • Double panels (one on each side) are ideal for wider windows.

Pro Tip: For a gathered look, opt for 2x fullness. For a sleek, modern look, 1.5x is sufficient.

How to Measure for Curtain Rods

Curtain rods should extend beyond the window frame to allow curtains to stack back without blocking light.

 

Steps:

Determine Rod Length:

  • Add 8–12 inches to the window width (4–6 inches on each side).
  • Example: For a 60-inch window, choose a 68–72-inch rod.

 

Measure Rod Height:

  • Place the rod 4–6 inches above the window frame.

 

Consider Hardware:

  • Finials (decorative ends) add width—account for them in your measurements.

Pro Tip: Use a level to ensure the rod is straight before marking holes for installation.

 

How to Measure for Outdoor Curtains

Outdoor curtains require extra durability and weather resistance. Measuring follows similar principles but with adjustments for exposure.

 

Steps:

Measure Width:

  • Make sure to include a 1.5x-2x fullness to account for wind and movement.
  • Example: For a 72-inch patio door, use two 50-inch panels (100 inches total).

 

Measure Length:

  • Decide if you want curtains to touch the ground, hover slightly above, or pool.
  • For ground contact, measure from the rod to 1-2 inches above the floor (to avoid dragging in dirt).

Check for Obstructions:

  • Ensure there’s no furniture, plants, or lighting that could interfere with the curtains.

Other Measuring Tips for Drapes and Curtains

Measure in Multiple Spots:

  • Windows and walls are rarely perfectly straight. Measure at the top, middle, and bottom for accuracy.

 

Account for Curtain Style:

  • Pencil pleat curtains require less width than eyelet or tab-top styles.

 

Use a Friend:

  • An extra set of hands helps hold the tape steady for tall or wide windows.

 

Double-Check Before Ordering:

  • Made-to-measure curtains are non-returnable, so verify all measurements.

 

Consider Measure Window Curtains Services:

  • Some retailers offer free in-home measuring to eliminate guesswork.

 

Conclusion: How to Measure for Drapes and Curtains

Measuring for curtains doesn’t have to be intimidating. With the right tools and a systematic approach, you can ensure your window treatments fit beautifully and enhance your space. Whether you’re dressing a cozy living room or an alfresco dining area, precision is key.

Final Tip: If you’re unsure, many retailers offer free measuring guides or virtual consultations. And remember—always measure for curtains twice to avoid the headache of returns!

Explore our collection of made-to-measure curtains to bring your vision to life with confidence.

 

Q&A:

1. Should outdoor curtains touch the ground?

Yes, outdoor curtains should ideally touch the ground for a polished, intentional look. However, if you prefer a slight break (like indoor curtains), ensure they graze the floor without pooling. For practicality, opt for water-resistant fabrics like polyester or acrylic to prevent moisture damage.

 

2. How far outside a window should curtains hang?

Curtains should extend 4–6 inches beyond the window frame on each side. This ensures full coverage, blocks light gaps, and creates a balanced aesthetic. For wider windows or patio doors, increase the extension to 8–10 inches for a dramatic effect.

 

3. How long should outdoor curtains be?

The ideal length depends on your style:

  • Floor-length: Skim the ground for a tailored finish.
  • Puddle length: Add 3–6 inches of excess fabric for a luxurious, relaxed drape (best for covered areas).
  • Sill-length: Stop at the windowsill for casual spaces like pergolas or gazebo.

 

4. How far off the ground should outdoor curtains be?

Outdoor curtains should ideally touch the ground or hover 1-2 inches above it to prevent dirt, moisture, or pests from accumulating. Avoid hanging them too high, as this creates an unfinished look. If your space is prone to rain, consider a slight lift (2–3 inches) for practicality.