How to Choose the Right Shower Curtain Liner Size

Finding the right shower curtain liner size can feel like a guessing game, but it doesn’t have to be. The liner is the unsung hero of your bathroom, keeping water off the floor while protecting your decorative curtain. Get the size wrong, and you end up with puddles, mildew, or a curtain that drags on the ground. This guide walks you through measuring, choosing the right type, and picking a liner that lasts—so you can stop replacing it every few months and enjoy a cleaner, more functional shower.

Which Shower Curtain Size Fits?

More often than not, the standard 70‑inch by 72‑inch shower curtain will fit your shower or shower‑tub combination. A shower curtain does not have to be an exact fit for the opening, and if you need to deviate from the typical size, it is best to be on the side of too wide vs. too long, since it is better to have extra material to cover the sides of the opening than not enough. An overly long curtain poses a tripping hazard, unless you can raise your shower curtain rod. Before you shop, get familiar with the type of shower you have and measure the opening.

What to Do If Your Shower Is Narrower Than Standard

Not every shower follows the standard width. One user with a 53‑inch‑wide stall found that a standard 70‑inch curtain was too wide, causing the fabric to fold over and trap moisture, which led to mildew. The same user struggled to find a correctly sized liner because most products are designed for standard tub‑shower combos. If your shower is narrower than 70 inches, look for a “stall‑size” curtain or liner—these are typically about 16 inches shorter in width. Alternatively, you can adjust a standard‑size liner by trimming and hemming it, but be careful not to remove too much material. Another user reported that curtains that are too wide fold over and trap moisture, leading to mildew. Liners advertised as anti‑mildew can still get gunked up and require frequent replacement. The best solution is to find a narrower liner that matches your opening width, reducing folds and preventing moisture buildup.

How to Measure for a Shower Curtain

It’s unlikely that your shower’s measurements will exactly match one of the most commonly available shower curtain sizes, but you should still know how much space you have to cover before you buy anything. Follow these steps:

1. Measure the width of your shower opening from wall to wall.
2. Add 12 inches to the width. This extra slack allows your curtain to hang with gentle folds that both look more attractive and provide more complete coverage.
3. Measure your shower height from the rod to the floor.
4. Subtract 8 to 10 inches from the height measurement to account for curtain rings and to ensure your shower curtain won’t pool or drag on the floor. Note: You can be less precise about your height measurement if you have an adjustable shower curtain rod or a tension shower rod.

Types of Shower Curtains

Once you nail down the correct measurements, think about what type of shower curtain will best suit your space. Of course, you should also consider design and color, but it’s important to know the top types in terms of material and size.

Extra-Long Shower Curtain

Extra‑tall shower curtains are designed for showers with extra‑high ceilings or for folks interested in a full floor‑to‑ceiling look. Typically, the standard extra‑long shower curtain has an additional foot to 14 inches in length.

Extra-Wide Shower Curtain

Extra‑wide shower curtains are made to hang on a curved shower curtain rod, the type that would typically encircle a freestanding bathtub or a tub with one curved edge. A curved rod is longer than a regular shower rod, even if it takes up the same amount of space from right to left, so the extra fabric is essential to achieve the all‑important pleats.

Shower Stall Shower Curtain

A shower stall shower curtain is exactly what it sounds like: an extra‑narrow curtain intended to fit a shower stall. It is roughly 16 inches shorter in width. You should be mindful of length here as well, since you will not have the buffer of a tub to block water.

Vinyl Shower Curtain

This is one of the most low‑maintenance shower curtain options available. Because vinyl is already moisture repellent, you will not have to pair this curtain with a liner. Many vinyl options also come in transparent designs, which can be a plus if you would like to let more light into your shower.

Microfiber Shower Curtain

Microfiber is naturally water repellent and provides a softer look than a vinyl shower curtain with much of the same function. The fabric is easily washable, but might need a little more care and maintenance than a material like vinyl, as they do absorb water and might mildew, though they do block water well.

Cotton Shower Curtain

A cotton shower curtain has a clean and classic look and feel. It is a little elevated, but not too high‑maintenance. This type of shower curtain is machine washable and durable, but does require a vinyl or polyester liner to function, as cotton would otherwise absorb too much moisture.

Luxury Shower Curtain

A luxury shower curtain is made from fancier fabrics, think: faux silk or linen. It may also be embellished with more design details, like ruffles, piping, or embroidery. These are usually more expensive options and will definitely require a liner.

Hookless Shower Curtain

If you want to forego curtain rings, opt for a hookless shower curtain, which slips directly over the shower rod using built‑in grommets. You can find hookless varieties in various materials and styles, and they may also include built‑in liners.

Liner vs. Decorative Curtain: Do You Need Both?

Many users may not realize the functional difference between a liner and a decorative curtain. A waterproof liner is essential to stop water from escaping while an outer curtain is for appearance. This distinction affects purchasing decisions and sizing: liners must be sized for function, not just looks. For a fabric outer curtain, you absolutely need a liner underneath. For vinyl curtains, the material itself is moisture‑repellent, so a separate liner is unnecessary. When using both, the liner should be the correct size to contain water, and the decorative curtain can be slightly larger for aesthetic fullness. One user noted that they initially skipped the liner thinking the decorative curtain was enough—only to end up with a wet bathroom floor. Pairing a properly sized liner with an outer curtain keeps the floor dry and prolongs the life of your decorative curtain.

How to Keep Your Shower Curtain Clean

Wash your shower curtain once per month and, at the very least, once per season to keep it fresh. You should also spread your curtain fully open after each shower (hanging with as few folds as possible) to allow it to dry faster and help keep mold or mildew at bay. When it comes to cleaning, you can clean both cloth shower curtains and vinyl shower curtains/liners in your washing machine using gentle or heavy‑duty detergent. Fabric shower curtains can be washed in cold or warm water, or on the permanent‑press cycle to reduce wrinkling, then tumble dried on medium or low heat. Vinyl shower curtains and liners should be washed on a gentle cycle using cold water only and should never be machine dried or ironed. Simply hang it back on your shower hooks to let it dry. You can also spray your plastic curtain or liner regularly with a vinegar‑and‑water‑based cleaner to prevent buildup between washes.

Tips for Choosing the Best Shower Curtain

Size does matter when it comes to shower curtains, but it is not the only factor that makes a shower curtain the right choice. Consider these additional points:

• Account for light levels: If your shower lacks an overhead light (and you can barely tell your shampoo from your conditioner with the curtain shut), opt for a sheer or clear shower curtain that will let light filter in from fixtures and windows.
• Buy a liner: A vinyl shower curtain liner is essential in protecting your fabric shower curtain from mold and moisture. If your bathroom is poorly ventilated, choose a stand‑alone vinyl curtain.
• Remember your style: Always factor in your bathroom’s style and color palette when choosing a type of shower curtain. It takes up a large (if not the largest) amount of visual space in your bathroom, so it should be in harmony with the space.
• Go bigger if needed: If you are stuck between shower curtain sizes, choose the larger one. A larger barrier to stop the shower spray is always preferable.
• Select the right rings: Your shower curtain rings should work both aesthetically and functionally with your shower curtain. Ensure both fit together before you buy.

You should swap out your shower curtain if you see considerable mildew, unremovable buildup, discoloration or torn edges. Many manufacturers also recommend replacing your curtain every six months.

How to Choose a Liner That Lasts and Resists Mildew

One user reported having to purchase new liners 1‑2 times per year, despite anti‑mildew claims, due to gunk buildup. Another user noted that liners advertised as anti‑mildew still get gunked up and require frequent replacement. To choose a liner that holds up longer, look for thicker, non‑transparent materials. Thicker vinyl or polyester liners tend to be more durable and less prone to tearing. Avoid relying solely on anti‑mildew marketing claims—most liners will eventually develop buildup if not properly maintained. Instead, focus on a material that feels sturdy and is easy to wipe clean. Also, a slightly heavier liner will hang better and resist clinging to your body while you shower. Regularly cleaning your liner and ensuring it dries fully after each use will extend its lifespan more than any label promise.

Frequently Asked Questions

Should a shower curtain touch the floor?

Shower curtains for a tub shower are not meant to touch the floor. Ideally, there should be 2 to 5 inches between the bottom of the curtain and the ground.

What size curtain should I get for a walk-in shower?

Standard shower curtain sizes for walk‑in showers are 54 x 72 inches or 54 x 78 inches.

Should a shower curtain be inside or outside of the tub?

There should always be a shower curtain or a shower liner inside the tub to prevent water from getting on the floor. To keep your shower curtain from getting wet, you can get a shower liner that goes inside the tub.

What size shower curtain would I need for a curved shower rod?

Standard shower curtains will work for a curved rod. These generally measure 70 x 70 inches.