Curtain drop is the finished vertical length from the hanging point to the bottom of the panel. It is not always the same as floor-to-ceiling height or window height.
The right drop depends on the hardware, the room, and the finish you want at the floor.
Hover
A hover finish stops slightly above the floor. It is practical for rentals, children's rooms, heaters, and daily-use curtains. It also forgives small floor irregularities.
Kiss
A kiss finish touches the floor line. It looks tailored, but it requires accurate measuring from the real hanging point. Even a small floor slope can show.
Break
A break adds a little extra length so the fabric bends softly at the floor. It is more forgiving than kiss but can collect dust and shift during daily use.
Puddle
A puddle adds several inches for a decorative pool of fabric. It is best for formal, low-traffic spaces and less practical near doors or radiators.
| Finish | Adjustment | Best use |
|---|---|---|
| Hover | Slightly above floor | Practical rooms |
| Kiss | At floor line | Tailored look |
| Break | About 1 in extra | Soft formal look |
| Puddle | Several inches extra | Decorative spaces |
How this changes the calculator inputs
This article explains one part of the calculator rather than a separate decorating rule. For curtain drop calculator: hover, kiss, break, or puddle, the important habit is to keep the inputs separate: coverage width first, fullness second, panel width third, and finished drop last. When those numbers are mixed, the output can look precise but still be wrong.
The calculator is most useful when you test two realistic options. Compare a lower and higher fullness ratio, or compare a shorter and longer rod. The goal is not just to get one number, but to understand which decision changes the buying result.
Example
If a 72-inch rod is calculated at 1.5x fullness, the fabric target is 108 inches. At 2x fullness it becomes 144 inches. With 52-inch panels, both may still round to three panels, but the finished look will be different. That is why the visual and numeric result should be read together.
Before you order
- Confirm whether the page or package size describes one panel or a pair.
- Keep inches and centimeters separate until the final conversion.
- Measure from the actual hanging point, not from the top of the window photo.
- Check whether brackets, finials, or corners limit how far panels can move.
The professional rule of thumb
A good curtain decision should pass three checks at the same time: it should cover the glass when closed, clear the glass when open, and finish at the floor or sill in a way that looks intentional. If one of those checks fails, the issue is usually not taste. It is usually width, fullness, hardware placement, or finished drop.
When two choices are close, choose the one that solves the harder problem. Width is usually easier to absorb because extra fabric becomes fullness. Length is harder because extra or missing fabric is visible at the floor. Hardware position is hardest to change after drilling, so confirm rod height, brackets, and side clearance before treating a package size as final.