Window -sheers:4 metres - curtains:8 metres(4/4) Door -sheers:2 metres -curtain: 2 metres For the window i bought 8metres because i was moving to another house with big windows but if you have normal window 6metres is Okey 3/3 that is if you want fine gathers. For the curtains i bought 750 per metre And for the sheers 300 per metre. Now do the calculations