Curtain Size Calculator

Find curtain length from where the rod is mounted.

How the Math Works

The Curtain Size Calculator uses a straightforward formula: length = rod height + drop. Rod height refers to the vertical distance from the floor to the curtain rod, while drop is the additional length you want beyond the rod. By adding these two measurements, you determine the total curtain length needed. This calculation ensures precise sizing for curtains, accounting for both the mounting position and desired drape style.

Practical Applications

To apply this calculation, first measure the rod height by checking from the floor to where the rod will be installed. Next, decide on the drop based on your preference—whether you want curtains to puddle on the floor, sit neatly above it, or follow a specific style like cafe or shoulder-length. Input these values into the calculator, and it instantly provides the exact curtain length required, eliminating guesswork and ensuring a tailored fit for any window.

Day-to-Day Use

This calculator simplifies home decor projects by saving time and reducing the risk of ordering incorrect sizes. Whether you're furnishing a new room, replacing old curtains, or installing custom window treatments, the tool helps you achieve professional results without complex measurements. It also prevents unnecessary returns or alterations, making curtain shopping and installation more efficient and stress-free in everyday life.

Worked example

84 in rod + 3 in → 87 in.

FAQ