Unsure on how much you need ? It is easier than you think.
Grab a Caculator or use the one on your phone
Paper, Pen & of course a tape measure and your ready to go.
Square and rectangular areas
Simply measure the widest area a and the longest area be see example below
4.2 x 5.2 = Total 21.84 sqm
Adding approximately 10% for wastage means that you want to order 24.024 sqm square metres of flooring.