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Blind Size Calculator
Calculate exact window blind dimensions for inside and outside mounting
Measurement Standard: For Inside Mount, a standard width deduction (~0.25 to 0.5 inches) is typically applied for clearance. For Outside Mount, width is increased to cover trim. Enter your window frame measurements below.
Window Frame Input
Calculation Results
⚠️ Always measure in three places (top, middle, bottom for width; left, center, right for height) and use the smallest width / largest height for accuracy.