Measuring for net curtains involves taking two measurements of your window. We recommend that when measuring you use a metal tape measure, as plastic or cloth ones are flexible and can stretch or distort which may result in inaccurate measurements.
To measure the width of your windows for your net curtain, measure the inside of the window recess from wall to wall. The next step is to decide how much gather you would like. The standard-fullness is 2 x your width measurement. For additional privacy you can go for 2.5 or even 3 times.
To measure the drop of your window, measure form the top of the window recess to the window sill or ledge. The next step is to work out which standard drop size best suits your measurements. If your window is between the standard net curtain sizes you or a seamstress can shorten the curtain by turning the top hem.