How to Measure Windows for Custom Blinds: A Step-by-Step Tutorial

Jan 31, 2026By sedat kahraman
sedat kahraman

Measuring windows for custom blinds is an essential step to ensure a perfect fit and a polished look for your home. With the right tools and a little guidance, you can easily measure your windows like a pro. Follow this step-by-step tutorial to get accurate measurements and make your custom blinds installation a breeze.

Gathering Your Tools

Before you begin, make sure you have all the necessary tools. You’ll need a steel tape measure, a pencil, and paper to jot down your measurements. A step ladder might also be useful if you're measuring tall windows.

measuring tools

Deciding on the Mount Type

Inside Mount

For an inside mount, the blinds or shades are installed inside the window frame, offering a clean and streamlined look. This type requires precise measurements to ensure the blinds fit snugly.

Outside Mount

An outside mount is when blinds are installed outside the window frame, either on the wall or molding. This option can make windows appear larger and provides better light control and privacy.

window blinds

Measuring for Inside Mount

To measure for an inside mount, follow these steps:

  1. Width: Measure the width across the top, middle, and bottom of the window. Use the narrowest measurement for your blinds.
  2. Height: Measure the height from the top to the bottom on both sides and in the center. Use the longest measurement for your blinds.
  3. Depth: Measure the window's depth to ensure the blinds will fit inside the frame.

Measuring for Outside Mount

If you prefer an outside mount, here’s how to measure:

  1. Width: Measure the total width you want the blinds to cover. Add at least 2-3 inches on each side for better light control.
  2. Height: Measure from the top of where you want the blinds to start, down to the desired length. Add extra inches to cover the window frame fully.
window with blinds

Recording Your Measurements

Once you’ve taken all your measurements, write them down clearly, labeling each one as width, height, or depth. Double-check your figures to avoid any mistakes during ordering.

Keep in mind that different manufacturers may have specific measurement instructions, so it’s always a good idea to consult their guidelines before ordering your custom blinds.

Final Tips

Remember, measuring accurately is crucial for a proper fit. Use a steel tape measure for precision, and don’t hesitate to measure twice if you're unsure. If you're uncomfortable measuring yourself, consider hiring a professional to ensure everything is done correctly.

With these steps, you’re well on your way to enhancing your home with perfectly fitted custom blinds. Happy measuring!