Blind Size Calculator
Calculate the correct window blind size based on your window measurements. Supports inside mount and outside mount blinds with precise width and height calculations.
What is the Blind Size Calculator?
The Blind Size Calculator helps you determine the correct window blind size based on your precise window measurements. Whether you are installing new blinds or replacing old ones, getting the right size is essential for a perfect fit and professional look. This tool supports both inside mount and outside mount blinds.
Simply measure your window width at three points (top, middle, bottom) and height at three points (left, center, right), then enter the measurements. The calculator will instantly recommend the optimal blind dimensions for your chosen mounting style.
How to Use the Blind Size Calculator
Follow these steps to get the perfect blind size:
- Choose Mount Type: Select either "Inside Mount" (blind sits within the window frame) or "Outside Mount" (blind extends over the window frame).
- Measure Width: Measure the width of your window at the top, middle, and bottom. Enter each measurement in inches.
- Measure Height: Measure the height of your window on the left side, center, and right side. Enter each measurement in inches.
- View Results: The tool instantly displays the recommended blind width and height for your window.
Inside Mount vs. Outside Mount
Understanding the difference between mounting styles helps you choose the right option:
- Inside Mount: The blind fits inside the window frame. Use the smallest width measurement and the longest height measurement. This provides a clean, built-in look.
- Outside Mount: The blind covers the entire window frame and extends beyond it. Use the longest width plus 3 inches (1.5 inches overlap on each side) and the longest height plus 1.5 inches (overlap at the top). This is ideal for blocking more light and making windows appear larger.
Need help with other home projects? Try our Curtain Size Calculator or the Tablecloth Size Calculator for more home decor measurements.
Frequently Asked Questions
What is the difference between inside mount and outside mount blinds?
Inside mount blinds fit within the window frame, providing a sleek look. Outside mount blinds extend beyond the window frame, covering the entire opening and some surrounding wall area. Outside mount is better for light blocking and making windows appear larger.
How do I measure my window for blinds?
Measure the width at the top, middle, and bottom of the window frame. Then measure the height on the left side, center, and right side. Record all six measurements in inches for the most accurate blind size calculation.
Should I use the smallest or largest measurement for blinds?
For inside mount, use the smallest width and the largest height. For outside mount, use the largest width plus 3 inches and the largest height plus 1.5 inches to ensure proper overlap and coverage.
What if my window measurements are not standard?
Most blind manufacturers offer custom sizes. Our calculator provides precise measurements that you can use to order custom-sized blinds. Many retailers also cut blinds to size based on your exact measurements.
How much overlap is needed for outside mount blinds?
For outside mount blinds, add 3 inches to the width (1.5 inches on each side) and 1.5 inches to the height for proper overlap. This ensures the blind fully covers the window opening and blocks light effectively.
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