Curtain measuring guide
Instructions are often made really complicated for measuring curtains, but I like to keep things simple. If you would like to place an order for curtains, all I need to know is the exact size you would like each curtain panel to be when it is completely finished. So that's the length from the very top edge of the curtain to the very bottom edge, and the width from the left edge to the right edge. When you're measuring, you'll need to bear in mind how the curtains will be hung (from a pole or from a track) and where you want the drop to finish (to the windowsill, mid length or to the floor) as this will affect the required length.
The same applies for roman blinds. Simply measure the finished width required and the maximum drop.
You also need to consider the pattern match on your fabric. For curtains requiring a fabric join, you must make sure you have enough fabric to match the pattern edges properly. Large scale pattern prints have around 59cm repeat pattern match.
How much fabric do I need? Work out the required exact size of each finished curtain panel and allow at least an extra 25cm length per panel, and at least an extra 15cm width per panel. Standard curtain fabrics are around 137cm width.
Example: For a pair of curtains with a finished width of 120cm each and a drop of 220cm, you would need 5 metres of standard width fabric.
Remember you can easily make a long curtain shorter, but you can't easily make a short curtain longer!