A standard bathtub shower curtain is 72 inches wide by 72 inches long, sized to fit the common 60-inch tub-shower combo found in most US bathrooms.
One curtain that stops at the tub rim instead of dipping inside it will splash water onto the floor with every shower. Measuring for a bath curtain set takes about two minutes once you know the two numbers that matter: the width of the opening at the rod line and the drop from the rod to where you want the fabric to end.
The 72 x 72 size works for most standard tubs, but not all. Curved rods, wraparound setups, and extra-long tubs all change the math, and getting it wrong means a curtain that either drags in the water or leaves a gap you will notice every single morning.
What Is The Standard Bathtub Curtain Size?
The standard size sold in most US stores is 72 inches wide by 72 inches long, and it fits a typical 60-inch tub-shower combination. Retail listings commonly show 70 x 70 in, 70 x 72 in, and 72 x 72 in as ready-made options, with the 72 x 72 format as the safe pick for an average bathroom.
That extra width beyond the 60-inch tub opening is not wasted. A curtain needs roughly 12 inches of extra width over the opening to drape in soft folds and overlap where the two ends meet, which is what keeps water inside the tub rather than on your floor.
Length is where most people get it wrong. A bathtub curtain should hang into the tub, not stop level with the rim — six to eight inches below the rim is the working target. The standard tub-and-shower sizes break down like this:
| Curtain Size | Tub Or Shower Type | Typical Use |
|---|---|---|
| 54 x 72 in | Small tub | Compact or half baths |
| 70 x 70 in | Standard tub-shower | Space-saving fit |
| 70 x 72 in | Standard tub-shower | Common retail size |
| 72 x 72 in | Standard 60-inch tub | The default for most bathrooms |
| 72 x 84 in | Longer tubs and showers | Extra drop length |
| 72 x 96 in | Tall or deep installations | Long drops, high rods |
| 84 in wide and up | Curved or wraparound rods | Extra-wide openings |
If your tub matches nothing on that list, measure before you buy. A few minutes with a tape saves a return trip.
How Do You Measure For A Bath Curtain Set?
Measure the full width of the opening at the rod line, then measure from the rod down to your desired end point — tub rim, inside the tub, or just above the floor. Add roughly 12 inches to the width for fullness, and measure from the bottom of the rings rather than the rod itself.
- Run a metal measuring tape across the full width of the tub or shower opening at the height of the rod.
- Add about 12 inches to that number. A 60-inch opening points to a 72-inch curtain.
- Measure from the rod down to where you want the hem: the tub rim, 6 to 8 inches below the rim, or just above the floor.
- Subtract for the hardware. Rings and hooks eat 1 to 3 inches of effective length, so measure from the bottom of the rings if they are already hung.
- For a bathtub, pick a curtain long enough to hang inside the tub rather than ending at the rim.
The tape method matters more than people expect. A cloth tape sags and reads short, which is exactly how a curtain ends up dragging in the water. Once you have your two numbers, matching them against a tested bath curtain set roundup is faster than scrolling a dozen product pages.
What Causes The Wrong Size Most Often?
Most sizing errors trace back to one mistake: measuring the tub instead of the rod. The rod position sets both the width and the drop, and a curved or wraparound rod can need a curtain wider than any standard size on the shelf.
The other common traps are quieter. Ring length gets ignored, so a curtain that measured perfectly on paper hangs two inches short in practice. A curtain that stops at the tub rim looks fine until the first shower sends water onto the floor. And a curtain that is too long bunches at the bottom, stays wet, and milks a musty smell into the whole bathroom.
A few guidelines cover the rest of it. The Spruce’s sizing guidance notes that longer tubs and showers commonly call for an 84-inch length, while Corleydesigns recommends a 54 x 72-inch curtain for a small tub. Neither number is universal — both exist because bathrooms are not one size, and a curtain that fits one perfectly can miss another by a foot.
Which Size Should You Actually Buy?
Buy 72 x 72 inches for a standard 60-inch tub-shower combo, and measure first for anything else. That one size covers the majority of US bathrooms, and knowing your two numbers tells you instantly whether you are in that group.
Here is the short version to take to the store. A 60-inch opening points to a 72-inch width. A rod-to-rim distance of 66 to 70 inches points to a 72-inch length with rings accounted for. Curved rod, longer tub, or a high-mounted rod? Measure, then look for 84-inch or 96-inch drops. And if the opening itself runs wider than standard, go past 72 inches in width rather than stretching a standard curtain flat — a curtain pulled taut has no drape left to shed water.
Get the width and the drop right, hang the hem inside the tub, and the splash problem disappears. That is the whole job.
FAQs
Is 72 x 72 the right size for every bathtub?
No. It fits the common 60-inch tub-shower combo, which is the majority of US bathrooms, but longer tubs, tall rods, and curved or wraparound rods all call for something different. Measure the opening width at the rod line and the drop from the rod before you assume the standard size works.
Should a shower curtain touch the floor?
Not in a bathtub setup. The hem should end inside the tub, roughly six to eight inches below the rim, so water runs back into the basin instead of onto the floor. A curtain that reaches the floor stays damp, bunches up, and holds moisture against the tub edge where mildew likes to start.
Do curtain rings change what length I need?
Yes. Rings and hooks take up roughly one to three inches of the curtain’s effective length once hung. If you measure from the rod itself and ignore the hardware, the curtain will hang shorter than planned. Measure from the bottom of the rings, or subtract a couple of inches when ordering.
References & Sources
- The Spruce. “Standard Shower Curtain Size.” Covers standard dimensions and the 84-inch length common for longer tubs and showers.
- Corley Designs. “Standard Shower Curtain Sizes, Finally Explained.” Source for the 54 x 72-inch small-tub recommendation and size chart details.
- Homedit. “Standard Shower Curtain Size.” Supports measuring at the rod line plus 12 inches for drape and coverage.
