Curtain Size Calculator
Enter window width and height to instantly calculate curtain length, panel width, rod length and fabric amount.
Curtain length style
Fabric fullness
Window height (cm)
Window width (cm)
Number of panels
Curtain Size Calculator: Fabric Amount and Rod Length
When buying or having curtains made, the most common mistake is taking the wrong measurement or not accounting for the fullness ratio. This calculator takes your window dimensions and curtain style to instantly compute panel width, total curtain length, rod length and fabric amount.
Curtain Length Standards
To the floor: Bottom edge ends 1–2 cm from the floor; elegant and classic look. To the sill: Ends 1–2 cm above the sill; practical for kitchens and bathrooms. Floating: 5–15 cm gap from the floor; modern, dramatic effect. Puddle: 5–15 cm trailing on the floor; theatrical, luxurious feel.
Fabric calculation does not include cutting allowance or pattern repeat. For patterned fabric, add one pattern repeat per panel. If using lining, add the same quantity of lining fabric.