Work out your curtain size

Enter your window, choose the look you want and get the pole length, curtain drop, curtain width and the ready-made size to buy.

1. Your window

Measure the outside of the window frame (or the inside of the recess if the curtains will hang inside it).

2. How the curtains hang

Where the pole or track goes

Curtain length

Pole or track length
Curtain drop (length)
Width of each curtain
Pole height from floor

What to buy

    Rules used: the pole extends past the frame on each side so open curtains clear the glass; standard fullness is twice the pole width; sill-length curtains end about 1 cm above the sill, below-sill about 15 cm below it and floor-length about 1 cm above the floor. Ready-made sizes vary by shop, so check the size label before you buy. Results are planning estimates.