Stop guessing curtain sizes! Our free Curtain Size Calculator helps you determine the ideal width and length for beautiful, functional drapes. Ensure perfect window coverage and calculate fabric needs with ease. Achieve the right curtain fullness for a professional finish in any room.
Formula:
Understanding Curtain Sizing
Curtain Width: Window Width × Fullness Factor
Curtain Length: Desired Finished Length + Hem/Header Allowance
Where:
- Window Width: The width of your window (or curtain rod).
- Fullness Factor: Typically 1.5x to 3x for a gathered look.
- Desired Finished Length: Length from rod to floor, sill, or just below.
- Hem/Header Allowance: Extra fabric for top and bottom hems (e.g., 6-12 inches total).