Wondering how to choose curtain length to make a small room look bigger? For low ceilings, the golden rule is “high and long.” Hanging floor-length curtains 4–6 inches above the window frame creates a vertical illusion of height. Explore our guide on standard lengths (84″, 96″, 108″) and style techniques like “The Kiss” or “Floating” to transform your compact living space into a grand interior.