Yes, curtains should be long enough to touch the floor. With a few exceptions, the longer the curtains are the more stylish and elegant it will look. This is why most standard ready-made curtains are lengthy. But the reality is that various decorating styles use different curtain lengths.
How close to floor should drapes hang?
The proper position is ½ inch above the floor for free hanging curtains. This distance allows for mopping and cleaning while creating the illusion that the curtain touches the floor.
How much should curtains touch ground?
You should aim for your curtain hem to be about 3/8″ to 1/2″ above the floor. Not only is this an easier length to measure for, but it also makes it simple to vacuum and sweep. It's a great option if you plan to open and close your curtains a lot since you won't need to rearrange them each time.