Ok so you have chosen a wallpaper; how much do you need to buy?
Most wallpaper is sold by the roll. (Alternatively is by the metre.) There are different size rolls so always check the description of your chosen wallpaper for the length & width of the roll. You will also need to see if there is a pattern repeat. The pattern repeat takes into account the amount of wallpaper that will be used to match up the pattern from sheet to sheet.
Use a tape measure to measure the width and height of each wall or surface. Its then a matter of working out how many drops you will get from a roll. See below a case study of 1 flush wall.
Wall is: 5m wide by 2.4 high
Roll is: 52cm wide by 10m long
52cm goes into 5 = 10 times (10 drops needed across the wall length)
10 divided by 2.4 = 4.1 (rounded to 4 drops in a roll)
10 divided by 4 = 2.5
Rounded up to 3 rolls to order
Be aware if you don’t order enough and need to re order ask for the same batch number. This may also be known as a dyelot. Buying wallpaper from different dyelots for the same wall is a risk as different batches may have a slight variance in colour or pattern. This is a good reason why it is important to have a proper measure 1st and double checkhow much you will be ordering.
Lastly when buying online check to see if shipping is included & how long shipping takes. If it is coming from US you can expect a 5-6 week lead time. If its coming from Australia 2-3 weeks is usual.