How to Measure for Blinds & Shades
Grab a steel tape measure and follow these simple steps.
Steel tape measure|Pencil & paper|~10 minutes
Best for
Windows with decorative trim you want to show off. Requires at least 2.5" frame depth.
How to Measure — Inside Mount
Black lines = WidthRed lines = Height
The smallest measurement wins:
- The lowest value among the black lines (top, middle, bottom) is your blind width
- The lowest value among the red lines (left, center, right) is your blind height
W
Width (black lines)
- 1.Measure inside width at top, middle, and bottom
- 2.Record the smallest of the three
- 3.Measure to the nearest 1/8"
H
Height (red lines)
- 1.Measure inside height at left, center, and right
- 2.Record the smallest of the three
- 3.Measure to the nearest 1/8"
Do not make deductions. Provide exact measurements — we'll make standard deductions for proper fit.
Quick Comparison
| Inside Mount | Outside Mount | |
|---|---|---|
| Width rule | Use smallest of 3 | Add 3–4" per side |
| Height rule | Use smallest of 3 | Add 3–4" above window |
| Min depth needed | 2.5" | No minimum |
| Deductions | We handle it | You set exact size |
| Look | Clean, built-in | Bold, full coverage |
Pro Tips
- Measure each window individually — even identical-looking windows can vary
- Always use a steel tape measure — cloth tapes stretch
- Measure everything twice before ordering
Need Help Measuring?
Book a free professional measuring appointment — we'll come to you.