A shower curtain that does not match your tub opening creates two problems at once: water leaks onto the bathroom floor and the curtain looks awkward, either bunched or hanging like a banner. Shower curtain width is the single most important spec when ordering a new one, yet most homeowners default to the generic 72-by-72-inch size without measuring. Standard tubs, walk-in showers, clawfoot tubs, and corner stalls each have different ideal widths, and adding the right amount of overlap on each side prevents the puddle you keep mopping up.
Standard Tub Curtain Widths
A typical American tub measures 60 inches long with a curtain rod set above the long side. The industry standard 72-inch-wide curtain gives you about 6 inches of overlap on each end, which is just enough to block splashes when paired with a properly installed liner. Stock curtains from Bed Bath and Beyond, Target, and Amazon all default to 72 inches for this reason.
If you have a longer 66-inch or 72-inch tub, jump up to a 78-inch or 84-inch wide curtain. These extended sizes are stocked at West Elm, Pottery Barn, and major online sellers like Wayfair and Anthropologie. Match the liner width to the curtain width; mismatched liners and curtains pull unevenly and look sloppy hanging on the rod.
Walk-In Shower and Stall Sizes
Shower stalls without tubs typically measure 32, 36, or 48 inches wide at the opening. A 54-inch-wide stall curtain handles the smallest 32-inch stalls with 11 inches of overlap on each side. For 36-inch stalls, a 60-inch-wide curtain works. Larger 48-inch openings need at least a 70-inch curtain to maintain decent overlap.
Buy stall curtains slightly longer than you think you need. A 78-inch length suits most stalls because the curtain hangs from above the opening height and needs to reach the inside of the curb. Too-short curtains leave a gap at the bottom that lets water escape and creates a slip hazard outside the shower door zone.
Clawfoot Tubs Need Special Curtains
Clawfoot tubs require a curtain that wraps the entire tub, not just one side. The standard rod for a clawfoot is rectangular or oval and runs about 60 to 65 inches long by 25 to 30 inches wide. You need either two 72-inch curtains hung from the long sides plus two 36-inch curtains for the ends, or a custom 180-inch-wide curtain that wraps the whole rod.
Specialty retailers like Vintage Tub and Bath ($60 to $150 per curtain) sell pre-sized clawfoot curtains in matching pairs. The Container Store sells extended hookless options for the same purpose. Plan for 12 to 14 weighted curtain hooks per side; the rod span is longer than a standard install and droops without enough hooks.
Extra-Long Curtains for High Ceilings
If you have a high ceiling and want the curtain rod mounted near the ceiling for a dramatic look, you need both extra width and extra length. Standard curtain lengths run 72 inches, but extra-long options at 84 inches, 96 inches, and even 108 inches are available from Pottery Barn, Crate and Barrel, and Restoration Hardware ($100 to $250 each at the longer sizes).
Mount the rod 10 to 12 inches above the door head height or 4 to 6 inches below the ceiling, whichever is lower. The lifted rod makes the bathroom feel taller and matches the visual trick designers use with window treatments. Just confirm the curtain still allows comfortable getting in and out of the tub; if the bottom drags on the floor, water wicks up the fabric and grows mildew.
Liner Width and Type Matters Equally
Always pair fabric or decorative curtains with a waterproof liner. Standard liner widths match the standard curtain widths (72 inches by 72 inches), but stall liners come in 54-by-78-inch sizes for smaller spaces. PEVA liners ($10 to $15) are PVC-free and recyclable, while heavy-gauge vinyl liners ($15 to $25) last longer but contain PVC.
For a long-term option, fabric liners made of polyester with a water-repellent coating, like the Mrs Awesome from West Elm ($30), wash in the machine and last three to five years. Hang the liner inside the tub and the decorative curtain outside the tub on the same rod. The double layer prevents water from rolling out underneath.
Installing and Hanging Properly
Curtain rods come in tension-mount (no drilling, $20 to $40 at Target) and permanent wall-mounted styles ($30 to $150). Tension rods work for renters but can fall mid-shower under heavy curtains. Wall-mounted rods anchor into the wall studs or tile with screws and last decades.
Set the rod 6 to 8 inches above the tub edge for a 72-inch curtain and 12 to 16 inches above the tub for an 84-inch curtain. Use 12 curtain hooks for standard 72-inch widths and 16 for widths over 78 inches. Hooks with rust-proof finishes like brushed nickel or matte black from Better Homes and Gardens ($10 a set at Walmart) outlast the cheap painted ones that flake within a year.
Common Mistakes to Avoid
Buying a curtain by length first and ignoring width is the top error. Sellers list 72-by-72-inch as the most common, but a tall buyer with a standard tub often picks an 84-inch length without realizing the listing also bumped the width to 78 inches. Always confirm both dimensions before checkout.
Mismatched liner and curtain widths is the second common mistake. The liner inside the tub must be at least as wide as the curtain outside or water leaks through any gap. If you customize either, customize both. Finally, do not skip the weighted hem; heavier liner bottoms hang straighter and seal against the tub edge under air movement from the bathroom fan.
