How to size shower curtains
Measure the surface, then the overhang
Standard shower curtain is 72″×72″. For tall ceilings, 78″ or 84″ long. For walk-in showers and clawfoot tubs, 108″ wide may be needed. Always check the rod position relative to the tub edge before sizing.
Standard sizes vs. your actual surface
Manufactured "standard" sizes assume textbook measurements. Older homes, custom furniture, and non-standard windows often deviate by 1–3″. If the measurement falls between two stock sizes, choose the larger; it's easier to hem or tuck excess fabric than to add length you don't have.
Mounting and clearance
The curtain bottom should sit 1–2″ above the tub floor or shower tray to keep water inside without dragging in standing water. Curtain weights or magnets help heavy fabric curtains seal against the tub.
Common mistakes
- Measuring once. Surfaces are rarely perfectly square; take the smallest of three measurements.
- Forgetting shrinkage. Cotton items can lose 3–5% on the first wash.
- Ignoring drape. Heavier fabrics need an extra inch or two to hang correctly.