How high should the curtain be when hanging it from the ceiling and wanting it to reach from ceiling to floor?

Always specify the height of the hemmed curtain when ordering. If the curtain is to hang freely just above the floor, you should leave a small margin, so in general subtract about 1 cm from the height. We have included this in the measurements below. Remember to measure in several places, in case the floor/ceiling isn’t quite level! Should you get different measurements, use the smallest measurement.

In addition to this, when ceiling mounting subtract a few centimeters from the total ceiling height as different rails and hooks position the curtain different distances from the ceiling. Below you can see the total number of centimeters, including the floor margin, that you need to subtract depending on which rail and which hook type you are using.
(High hook = four-prong hook with high hook, low hook = four-prong hook with low hook)