Getting accurate measurements is the most critical step when ordering made-to-measure blinds. One mistake and the blind could be too loose, too tight, or misaligned. This guide gives you a step-by-step process — plus tips and common pitfalls — so your blinds fit perfectly.
| Mounting Type | Description | Benefits / Drawbacks |
|---|---|---|
| Inside Recess | Blind fits within the window frame | Neater appearance, but you need precise measurements and enough depth |
| Outside Recess | Blind covers the frame and overlaps | More forgiving of measurement variation, better light-blocking |
Decide which style suits your window and decor.
A metal tape measure (not cloth)
Pen and paper or a digital note app
A spirit level (optional but useful)
A ladder or stool (if measuring tall windows)
Measure the width: at the top, middle, bottom — use the smallest width.
Measure the drop / height: left, center, right — use the longest drop to ensure full coverage.
Measure the depth of the window frame (how far the blind will tuck in).
Check for obstacles: handles, latches, or protruding fittings that may interfere.
Measure the width of the area you want to cover — allow some overlap (e.g. + 25–50 mm each side).
Measure the drop from where the blind sits above the window to where you want the bottom to be.
Ensure there’s clearance above the window frame for the headrail.
Round down widths (don’t round up) for inside-fit to ensure it doesn’t jam.
Always measure in millimetres.
Avoid “guessing” — take three measurements and use the most conservative one.
Don’t rely on wall-to-wall measures or old blinds as a reference.
If in doubt, reach out and we can help — better safe than sorry!
Correct measuring ensures your blinds look smart and function perfectly. If you’d like help with your measurements, BestBlinds UK offers guidance — or you can order free sample swatches to test before finalizing. Contact us or start measuring today!
