Ordering custom linen curtains is one of the best ways to achieve a polished, tailored look for your home. Unlike ready-made curtains, custom curtains are made specifically for your windows, ensuring better coverage, improved light control, and a more elegant drape.
However, even the highest-quality curtains will not look their best if the measurements are inaccurate.
The good news is that measuring your windows is much easier than many homeowners expect. With a metal measuring tape and a few simple steps, you can confidently measure your windows and order curtains that fit beautifully.
If you're still choosing between fabric types or curtain styles, our guide on How to Choose the Best Linen Curtains for Your Home is a useful place to start.
This guide explains everything you need to know before ordering custom linen curtains, from measuring width and height to choosing the right fullness and curtain length.
Before You Start Measuring
Before taking any measurements, decide whether you're measuring for an existing curtain rod or planning to install a new one.
If you haven't installed the rod yet, it's recommended to position it 6–12 inches (15–30 cm) wider than the window frame whenever possible. This allows the curtains to stack neatly beside the window, making the room feel larger and letting in more natural light when the curtains are open.
For height, most designers recommend mounting the rod 4–8 inches (10–20 cm) above the window frame, or as close to the ceiling as practical. Hanging curtains higher creates the illusion of taller ceilings and gives the room a more luxurious appearance.
Always use a metal tape measure rather than a fabric tape measure, as it provides more accurate results.
Step 1: Measure the Curtain Width
Width is the most important measurement because it determines how full and luxurious your curtains will look.
Measure the full width of the curtain rod or track—not the glass or window frame.
If the rod has decorative finials, measure only the usable area between them.
Record the measurement in inches or centimetres and double-check for accuracy.
For example, if your curtain rod measures 100 inches wide, record that number as your finished curtain coverage width.
Step 2: Decide on Curtain Fullness
Curtain fullness refers to how much fabric is used compared with the width of the curtain rod.
More fullness creates deeper folds and a richer appearance.
1.5× Fullness
A cleaner, more modern look with lighter folds. Suitable for decorative curtains and casual spaces.
2× Fullness
The most popular option for custom linen curtains. Provides balanced folds that look full without appearing bulky. Ideal for living rooms, bedrooms, and dining rooms.
2.5× Fullness
Creates luxurious, hotel-style drapes with deeper pleats. Recommended for formal interiors and premium window treatments.
For most homes, 2× fullness offers the best combination of appearance and functionality.
Step 3: Measure the Curtain Length
Next, determine how long you want the curtains to be.
Always measure from the top of the curtain rod or track to your desired finishing point.
Floating Above the Floor
The curtain ends approximately ½ inch (1 cm) above the floor. This style is practical for high-traffic areas and makes vacuuming easier.
Floor Length
The curtain lightly touches the floor. This is the most popular option because it creates a clean and elegant appearance.
Puddle Length
The curtain extends 2–6 inches (5–15 cm) onto the floor. This style creates a luxurious look often used in formal living rooms or master bedrooms.
Step 4: Choose the Right Header Style
Different header styles affect how measurements are taken and how the finished curtains hang.
Pinch Pleat
One of the most elegant choices for custom curtains. The finished width is measured after the pleats are sewn, creating a tailored appearance.
Ripple Fold
Ripple fold curtains create smooth, continuous waves and are commonly used with ceiling tracks. This style is popular in modern homes.
Grommet
Grommet curtains slide directly onto the curtain rod. When measuring, remember that the top of the curtain sits below the rod because of the metal rings.
Rod Pocket
A classic style where the curtain rod passes through a sewn pocket at the top of the curtain. Ideal for decorative or traditional spaces.
Measuring Extra-Wide Windows
Large windows often require multiple curtain panels rather than one oversized panel.
Using two panels allows the curtains to open and close more easily while creating balanced folds on both sides of the window.
For very wide windows or sliding patio doors, custom panel widths can be calculated based on your preferred fullness and header style.
Measuring Bay Windows
Bay windows require measuring each section separately.
Rather than combining all measurements into one number, measure each side individually to ensure the curtains fit the shape of the window correctly.
If you're installing separate tracks, measure each track independently.
Common Measuring Mistakes
Many measuring problems are easy to avoid. Some of the most common mistakes include:
- Measuring only the glass instead of the curtain rod
- Forgetting to include rod extensions
- Ordering curtains without considering fullness
- Measuring from the window frame instead of the rod
- Choosing curtains that are too short
- Guessing measurements instead of using a tape measure
Taking a few extra minutes to verify your measurements can prevent costly ordering mistakes.
Should You Order Fabric Samples First?
If you're unsure about colour or texture, ordering fabric samples before placing a custom order is highly recommended.
Seeing the fabric in your own home allows you to evaluate how it looks under natural daylight, evening lighting, and alongside your furniture and wall colours.
Popular colours to consider include Natural Linen, Warm Ivory, and Stone Gray — all versatile neutrals that work across a wide range of interior styles.
Final Thoughts
Measuring for custom linen curtains doesn't have to be complicated.
By measuring the curtain rod instead of the window, choosing the appropriate fullness, and deciding on the right curtain length, you can confidently order curtains that fit beautifully and enhance your home.
If you're investing in custom-made linen curtains, taking accurate measurements is the first step toward achieving a professional, tailored finish that will look elegant for years to come.
For further reading, explore Are Linen Curtains Worth It? to understand the full value of choosing premium custom linen, or read Linen vs Cotton Curtains if you're still deciding on fabric. Once your curtains arrive, How to Wash and Care for Linen Curtains will help you keep them looking their best.
Explore our Custom Linen Curtains Collection to find handcrafted curtains made in Canada, custom sized for your exact windows.
Frequently Asked Questions
Should I measure the window or the curtain rod?
Always measure the curtain rod or track, as this determines the finished curtain width. Measuring only the window glass will result in curtains that are too narrow.
What curtain fullness should I choose?
For most homes, 2× fullness provides the best balance of appearance and functionality, creating full, elegant folds without appearing bulky.
Should curtains touch the floor?
Yes. Floor-length curtains are the most popular choice because they create a clean and elegant look. A light touch on the floor looks polished and intentional.
Can I measure before installing the curtain rod?
Yes, but you should first decide where the rod will be mounted. This ensures accurate curtain width and length measurements.
What if my windows are very large?
Large windows are usually better suited to multiple curtain panels rather than one oversized panel, creating a more balanced appearance and making the curtains easier to operate.