How to Measure Your Windows for Curtains: A Complete Guide

Curtains are more than just a practical window covering. They add warmth, elegance and personality to a room.

Whether you’re looking for beautiful sheer curtains, elegant wave curtains or full-length decorative curtains, getting your measurements right is essential to achieving the perfect finish.

At World of Decor, we’ve put together this simple guide to help you measure your windows correctly before ordering your new curtains.

1. What You Will Need

Before measuring, gather the following:

• A metal measuring tape.
• A pen and paper.
• A step ladder if necessary.
• Someone to assist with wider windows.

Always record your measurements in millimetres (mm).

2. Measure the Curtain Track or Pole Width

One of the most important things to remember is that curtains are generally measured according to the width of the curtain track or pole, rather than simply the width of the window.

If you already have a curtain track or pole installed:

1. Measure the full width of the track or pole.
2. If measuring a pole, measure the usable width between the finials (decorative ends).
3. Record the measurement in millimetres.

If you do not have a track or pole installed:

1. Decide where you want your curtain track or pole to be positioned.
2. Measure beyond the window frame on both sides to allow the curtains to cover the window properly when closed.
3. Consider how much wall space is available.

Allowing extra width on either side can also help the curtains stack neatly when they are open.

3. Measure the Curtain Drop (Height)

The drop determines how long your curtains will be.

First, decide how you want your curtains to finish.

Popular curtain lengths include:

• Sill length: Curtains finish just above or around the window sill.
• Below sill: Curtains extend slightly below the window sill.
• Floor length: Curtains finish just above the floor for a neat, elegant appearance.
• Full length: Curtains reach the floor and may have a slight fabric break, depending on the desired style.

How to measure the drop:

1. Measure from the intended top hanging position of the curtain to your desired finishing point.
2. For a curtain track, measure from the appropriate track position where the curtain heading will attach.
3. For a curtain pole, consider whether the curtain will hang from rings, eyelets or another heading style.
4. Record the final drop measurement.

Important: Different curtain headings have different measuring requirements. The heading and attachment method must be considered before confirming the finished curtain drop.

4. Understanding Curtain Fullness

Have you ever wondered why some curtains look beautifully full and luxurious while others look flat?

The secret is curtain fullness.

Fullness refers to how much fabric is used in relation to the width of the curtain track or pole.

For example:

• 1.5 times fullness gives a relatively simple finish.
• 2 times fullness creates a fuller, more decorative appearance.
• 2.5 times fullness creates an especially luxurious, gathered look.

The ideal fullness depends on the fabric, curtain heading and desired appearance.

For example, wave curtains require a specific fullness ratio and compatible track system to achieve their signature flowing folds.

Tip: Do not confuse the curtain’s finished coverage width with the amount of fabric required. Your curtain supplier should calculate the fabric requirements based on the chosen heading and fullness.

5. Measuring Multiple Windows

If you’re ordering curtains for more than one window, measure each window separately.

Even windows in the same room may have slightly different widths and heights.

Keep your measurements organised by labelling each window:

• Main bedroom
• Guest bedroom
• Lounge
• Dining room
• Kitchen

This will help prevent confusion when ordering.

6. Common Curtain Measuring Mistakes to Avoid

Before finalising your measurements, check that you haven’t made any of these common mistakes:

• Measuring the window width instead of the curtain track or pole.
• Forgetting to allow for curtain stacking space.
• Measuring from the wrong hanging position.
• Forgetting to account for curtain rings, hooks or heading styles.
• Not considering the finished curtain length.
• Assuming all curtain headings use the same measurements.
• Forgetting to check for furniture, radiators or other obstructions.

7. Ready to Transform Your Windows?

Beautiful curtains can completely change the atmosphere of a room, adding softness, privacy and a stylish finishing touch.

Whether you prefer elegant sheers, modern wave curtains or classic decorative styles, choosing the right measurements is the first step towards achieving the perfect look.

Explore the window treatment options at World of Decor and let us help you create a beautiful finish for your home.

Need assistance with your measurements or choosing the right curtains? Get in touch with World of Decor for guidance.

Please note: Curtain measuring guidelines are general recommendations. Final fabric quantities, heading allowances and finished dimensions should be confirmed according to your selected curtain style and track system.