July 16, 2026

How to Take Window Measurements for Curtains and Blinds like a Pro

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How to Take Window Measurements for Curtains and Blinds like a Pro

Why Measuring Matters

Accurate measurements of windows are required while purchasing blinds or curtains. Measuring windows correctly saves your time and gives you exact fitting for your window treatment, boosting the appearance of your house and delivering maximum functionality. In case you’re shopping curtain blinds in Melbourne or through the internet, right size gives the desired control on light, privacy, and seamless look. Incorrect measurements equate to ill-fitting, expensive returns, or re-measuring at additional expense. In order to avoid this, kindly follow the below step-by-step guide on window measurement for blinds and curtains.

How to Measure Windows for Curtains

Below is a step-by-step curtain measurement guide to assist you in measuring your windows for immaculate curtains:

1. Decide Where to Position the Curtain Rod

Before you can measure windows for curtains, determine whether you prefer your curtain rod to be placed inside the window frame or outside it. The choice will affect the final appearance and operation of your curtains.

  • Recess Fit: Suitable for small windows, such as laundry or kitchen windows. Curtain rod is fitted within the window frame.
  • Face Fit: Suitable for a broad, dramatic look. Curtain rod is fitted outside the window frame so that your curtains appear larger and drape over a greater area.

2. Measure the Width

To ensure your curtains drape over the entire window space, take the width precisely.

  • Take the measurement from end to end of the rod’s width.
  • Take the measurement of the window width and then add 20–30 cm on either side for a fuller look. This added width will provide overlap when the curtains are closed, creating a richer look.

3. Measure the Length (Drop)

Drop means how far your curtains will descend. Depending on the type of curtain that you desire, there are two default options:

  • For floor-length drapes: Measure from where the rod will be to slightly above the floor. Make sure the length has a desired amount of clearance above the floor so as not to drag.
  • For sill-length drapes: Measure from the rod to slightly above the window sill.

Tip: When installing rod higher than the standard, for instance above architrave, measure from the new rod position. This will place windows with an upper look and will also make your room appear to be more spacious.

4. Think Curtain Header Style

Header curtain styles, such as eyelets, pleats, or tab tops, can affect overall drop. The header style will determine how the curtains will drape and appear. Keep this in mind when taking your last measurement.

Checklist for Curtain Measurements

  • Set rod position (inside or outside frame).
  • Measure width (rod width or window width plus additional space).
  • Measure to height accurately.
  • Record header style and how it will impact drop.

How to Measure Windows for Blinds

When it comes to measuring for blinds, the process differs depending on whether you’re opting for an inside mount or an outside mount. Here’s a detailed guide for both options:

A. Inside Mount Blinds (Recess Fit)

This option involves placing the blinds inside the window frame, creating a sleek, tidy appearance.

Step 1: Measure the Width

  • Take the top, middle, and bottom width of the window.
  • Utilize the shortest dimension to give a great fit.

Step 2: Measure the Height (Drop)

  • Measure the height at three places: the left side, the center, and the right side of the frame.
  • Use the shortest measurement to enable the blinds to cover the entire window.

Step 3: Check the Depth

  • Make sure the window frame has sufficient depth (typically 30 mm to 100 mm) to hold the blinds.

Tip: Although internal mounts give a clean and neat appearance, they tend to contribute some shimmer seepage on the sides because of closer fit.

B. Face Fit Blinds (Outside Mount Blinds

In this technique, the blinds are mounted outside the window. It’s a good fit for big windows or if you are looking for giving the perception that the windows are bigger.

Step 1: Measure the Width

Get the width measurement from the outside edge of the architrave (trim for the window) to the opposite outside edge.

Step 2: Measure the Height

Take measurement from the top to down to where you want the blinds to stop—either at sill or to floor.

Tip: Outside mounts work best for light blocking and can help your windows look larger than they are.

Checklist for Blind Measurements

  • Check if mount type is outside or inside.
  • Measure width and height at several points for accuracy.
  • Cross the narrowest (for inside mounts) or widest (for outside mounts) measurements.
  • For inside mounts, leave enough depth in the window frame.

Pro Measuring Tips

  • Measure with a metal tape: Metal tapes don’t stretch, unlike fabric tapes, so they are an accurate choice.
  • Measure in millimetres: This guarantees accuracy and avoids rounding errors that may affect the fit.
  • Measure twice: Double checking your measurements is always best to guarantee accuracy.
  • Call your measurements by their proper name: Keep a book or printout of your measurements to avoid confusion.
  • Measure each window separately: Just because your windows appear identical doesn’t mean they’ll have the same fit.

Measurement Mistakes to Avoid

  • Taking measurements with a fabric tape measure: Fabric tapes are stretchy, so measurements are not true.
  • Only measuring once and then accepting it as true: Double-check your measurement to avoid costly errors.
  • Treating windows as square: Windows are not square, so measure them at several points.
  • Not measuring the recess depth of the window when ordering blinds: Ensure the frame is deep enough for the blinds.
  • Not measuring curtain rod height with drop: Your curtain rod height dictates the entire drop length of your curtains blinds.

Conclusion

Measuring curtains and blinds for perfect dimensions that will look spectacular requires efforts. You can guarantee proper sizing of your residence window furnishings through these instructions when you buy new blinds or curtains. The combination of these tips will guarantee your satisfaction during measurement when purchasing in Melbourne or online. Securing expertise through a professional measure service allows you to get assistance with customised window treatment sizes.

Ready to shop? We offer a comprehensive selection of curtains and blinds for your home which you can find both at our store locations and online so you can find the perfect window treatment. Contact us now for your cost-free measure and quote appointment to get made-to-measure service.

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