Shower Curtain Sizes: Which One Fits Your Tub?

A shower curtain does real work. It keeps water off the floor, blocks drafts, and sets the tone of the whole bathroom. Get the size wrong and none of that happens, no matter how good the pattern looks.

The good news: a handful of standard sizes cover most tubs and stalls, and a tape measure settles the rest. Here is how to match the right dimensions to your space and hang them so the hem stays dry.

What Is the Standard Shower Curtain Size?

The three standard shower curtain sizes are 70×70, 70×72, and 72×72 inches, with 72×72 the most common. Most bath and shower designers work to a few fixed dimensions built around average tub sizes. A standard curtain has to cover a 60-inch tub end to end while leaving enough slack to look full when it is closed.

Plan on about 12 inches of extra fabric across the width. That surplus lets the curtain gather into folds instead of pulling flat and tight.

These are the three most common standard shower curtain dimensions:

• Square: 70 inches x 70 inches (about 178 x 178 cm).
• Narrow: 70 inches x 72 inches (about 178 x 183 cm).
• Standard: 72 inches x 72 inches (about 183 x 183 cm), the most popular.

For a taller shower or a high-mounted rod, 84 inches is the standard extra-long length. It drops farther down the wall without leaving a bare gap below the rings.

These sizes suit inset tubs. Freestanding baths are different: they often need a curtain that wraps the whole perimeter, which usually means a specialty size or two curtains hung together.

Walk-in showers also tend to want a longer curtain (78 inches or more), since there is no tub wall for the hem to overlap.

What Size Shower Curtain Do You Need?

Your ideal curtain size comes down to the shape and style of your bathing area. The dimensions of a shower stall rarely line up cleanly with off-the-shelf curtain sizes.

Use this table to match your fixture to the right curtain dimensions:

How Do You Measure for a Shower Curtain?

Measure wall to wall along the rod and add 12 inches for width, then measure rod to floor and subtract 1 to 2 inches plus the ring drop for height. Getting the numbers right is what keeps the floor dry and the curtain looking neat. Measure width and height separately.

Measuring Width

Measure the straight distance from wall to wall along the curtain rod, then add 12 inches.

That extra allowance matters. It lets the fabric ripple and fold instead of stretching flat like a bedsheet. A curtain that runs too narrow leaves gaps at the sides, and water finds those gaps, puddles on the floor, and feeds mold over time.

Measuring Height

Height takes a little more care. Measure from the bottom of the curtain rod straight down to the floor. Do not measure from the ceiling, since rod placement varies from bathroom to bathroom.

Take that total and subtract 1 to 2 inches so the curtain hangs just shy of the floor. Keeping the hem off the ground stops it from wicking up dirt and moisture.

Over a bathtub, the curtain only needs to fall inside the tub lip. It does not have to reach the floor outside the tub.

Measuring for a Freestanding Tub

Sizing a curtain for a freestanding tub works differently. You still manage the height to stop dragging, but the width math changes.

Measure the full circumference of the tub rim, or the oval rod above it, and add the same 12-inch allowance so the panels still close.

Finding one curtain wide enough for a clawfoot tub is tough. Two matching standard curtains are usually the simpler fix, clasped together so they fully contain the spray.

The Best Material for a Shower Curtain

The material you pick shapes both the look of the room and how much upkeep the curtain needs.

Canvas

Canvas gives a classic, upscale look. It is naturally water-resistant, holds its shape, and does not billow inward mid-shower. It resists wrinkles and feels substantial in the hand.

Canvas is not fully waterproof, though. Hang a protective liner behind it to keep the fabric clean and stop water from soaking through to the floor.

Plastic (Vinyl/PEVA)

Plastic is the most practical, budget-friendly choice. It is fully waterproof, light, and cheap to swap out, and it comes in every color and level of transparency.

The trade-off is that clear and white plastic shows water spots and soap scum, and the material grows brittle as it ages. Regular cleaning stretches its useful life.

Polyester

Polyester mimics the look and feel of canvas but wipes down more easily and costs less. These curtains are sturdy, hang cleanly, and shrug off wrinkles.

Polyester is hydrophobic, so it sheds water better than cotton, but a liner is still the safer bet for full protection.

Where Should You Hang a Shower Curtain Rod?

Hang the rod about 75 to 77 inches off the floor for a standard 72-inch curtain, so the hem clears the floor by 1 to 2 inches. Rod placement heads off trip hazards and mold. There is no strict rule, but a few guidelines get the best result.

Set the rod so the hem hangs 1 to 2 inches off the floor. A curtain that drags collects dust and traps moisture, which is exactly what mildew needs.

For a standard 72-inch curtain, mount the rod roughly 75 to 77 inches off the floor. That covers the curtain length plus the drop added by the hook rings.

If the shower feels cramped, a curved rod bows outward and adds up to about 9 inches of elbow room, all without changing the curtain size you buy ⁽¹⁾.

Standard Shower Curtain Size FAQs

The Final Curtain

A shower curtain pulls double duty. It shields the floor from water and anchors the look of the room, so the size matters as much as the color.

Measure your space, add the width allowance, and set the rod so the hem clears the floor. With those few numbers noted down, you can shop for the right fit with confidence.