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How to measure your bay windows for curtains

Measuring bay windows for curtains can be a bit more complex than measuring regular windows due to their unique shape. Here's a step-by-step guide to help you measure your bay windows accurately for curtains:


Tools Needed:

- Measuring tape

- Paper and pen


Step 1: Identify the Type of Bay Window:


Bay windows can come in various shapes, such as three-sided bays (with angled sides) or five-sided bays (with three angled sides and two flat sides). Determine the type of bay window you have before proceeding with measurements.

Step 2: Measure the Width:


For three-sided bay windows, measure the width of each individual section (A, B, and C) from the outermost edge of the trim or frame. For five-sided bay windows, measure the width of each section (A, B, C, D, and E).


Step 3: Measure the Height:

Measure the height from the top of the window frame to the desired curtain length. If you want floor-length curtains, measure from the top of the frame to the floor. For sill-length curtains, measure from the top of the frame to the windowsill. Note down the measurement for each section.


Step 4: Measure the Depth:

Measure the depth of the bay window by running the tape measure from the outermost point of the bay to the innermost point. This measurement is essential if you plan to install a curtain track or rod within the bay window.


Step 5: Consider Curtain Hardware:

Decide whether you want to mount the curtain rod or track inside the bay window or above it. If you plan to install it inside the bay, measure the space available for the curtain rod or track on each section.


Step 6: Calculate Curtain Width:

To determine the total curtain width needed for each section, you'll need to factor in fullness. Multiply the width of each section by a fullness factor (usually 2 to 2.5 times) to achieve a pleasing gathered look when the curtains are closed. Add the desired overlap between sections if you want the curtains to close without gaps.


Step 7: Choose Curtain Length: 

Based on the measurements taken in Step 3, choose the appropriate curtain length for each section, considering whether you want floor length, sill length, or another specific length.


Step 8: Finalize Measurements: 

Double-check all your measurements and calculations to ensure accuracy. Make a note of the measurements for each section of the bay window.


Step 9: Select Curtains: 

With your accurate measurements in hand, you can now shop for curtains. Consider whether you want individual panels for each section or continuous curtains that span the entire bay. Make sure to account for any adjustments or hemming that may be required.


Step 10: Installation: 

Follow the manufacturer's instructions for installing curtain rods or tracks. Ensure proper support and mounting for the chosen curtain hardware.



Remember that bay windows can be challenging to measure accurately, so it's a good idea to double-check your measurements or consult a professional if you're uncertain.