Blind and Shade Size Calculator
Works out the size to order for a blind.
Width to order
— cm
Share sends a link that reopens these numbers. Copy details pastes the full breakdown as a list.
Drop to order — cm
Blind area — m²
Reading this —
The formula
inside: width − 2 × clearance, drop = height outside: width + 2 × overlap, drop = height + 2 × overlap
Some suppliers make the inside deduction for you, so check before taking it off.
What to watch out for
Check whether your supplier wants the recess size or the blind size.
Frequently Asked Questions
How do I measure for inside-mount blinds?
Measure the recess width in three places and use the narrowest, then take off a small clearance.