What is the standard size for standard window curtain?

The standard size for window curtains typically varies based on the height and width of the window. Common widths for curtains are 48, 54, 72, and 108 inches, while standard lengths often range from 63 to 108 inches. For a more tailored look, curtains should generally be 1.5 to 2 times the width of the window. It's important to measure your specific window dimensions to ensure a proper fit.