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Grab bar height is one of the first questions people ask when planning a safer shower. There is a common answer, drawn from the ADA Standards for Accessible Design used in public buildings: horizontal bars are mounted between 33 and 36 inches above the floor or tub bottom, measured to the top of the bar. But a home bathroom serves a specific person, and the best height is the one that suits their reach, height and how they move. This guide explains the common figures, when to adjust them, and how to test before drilling.
Common heights from ADA guidance
The ADA Standards apply to public facilities, but many home designers use them as a starting point:
- Horizontal bars in showers and tubs: 33 to 36 inches above the floor or tub bottom, to the top of the bar.
- Bars in tubs at a lower level: in bathtubs, a second, lower bar is sometimes placed 8 to 10 inches above the tub rim.
- Clearance: 1.5 inches between the bar and the wall.
- Diameter: 1.25 to 2 inches for a comfortable grip.
These figures are for public spaces and wheelchair users. In a home, adjust to the user.
Adjusting for the user
- Have the user stand where they will hold the bar, in shoes or bare feet as they would be in the shower.
- Ask them to mime gripping for balance, with the elbow slightly bent.
- Mark where their hand naturally falls. That height is often close to 33 to 36 inches for average adults, but tall or short users may differ.
- For seated users, mime pushing up from the shower chair.
Vertical bars
A vertical bar at the shower or tub entry gives a hand-hold for stepping in and out. Mount it so the bottom is around 36 to 40 inches above the floor and it extends to around 60 inches or more, so users of different heights can grip it. Our guide to vertical vs horizontal grab bars covers when to use each.
Bars by location
- Back wall of a shower: horizontal bar at 33 to 36 inches.
- Control wall: a horizontal or vertical bar near the controls for support while adjusting.
- Entry: a vertical bar beside the opening.
- Tub: a horizontal bar on the back wall at 33 to 36 inches, and optionally a lower bar 8 to 10 inches above the rim.
- By a shower seat: a bar the seated user can reach when standing up.
See our grab bar placement guide for full layouts.
Bars to consider
An 18-inch or 24-inch bar suits most horizontal positions. A peened, textured grip is easier to hold wet.
Moen Home Care 18-inch Peened Grab Bar
18 in. long, 1.5 in. diameter stainless steel; peened slip-resistant handle texture; up to 500 lb when installed into a stud or with SecureMount anchors (sold separately)
Pros
- Peened texture for a surer grip when wet
- 18 in. length spans one stud bay plus margin
Cons
- Check the finish shown on the listing before ordering
- Anchors are extra
Moen Home Care 24-inch Peened Grab Bar
24 in. long stainless steel grab bar; peened slip-resistant texture; up to 500 lb when installed into a stud or with Moen SecureMount anchors (sold separately)
Pros
- Long enough for a horizontal back-wall bar
- Textured grip for wet hands
Cons
- Rating depends on stud or anchor installation
- SecureMount anchors are sold separately
A shorter 12-inch bar suits a vertical entry position in a tight space.
Moen 12-inch Peened Grab Bar with Concealed Screws
12 in. long stainless steel; peened textured slip-resistant finish; up to 500 lb when installed into a stud or with SecureMount anchors (sold separately); ADA compliant
Pros
- Very short bar for vertical spots at a tub or shower entry
- Textured surface
Cons
- Too short for a horizontal back-wall bar
- Anchors sold separately
| Product | Key specs | Link |
|---|---|---|
| Moen Home Care 18-inch Peened Grab Bar | 18 in. long, 1.5 in. diameter stainless steel; peened slip-resistant handle texture; up to 500 lb when installed into a stud or with SecureMount anchors (sold separately) | Check price on Amazon (opens in a new tab) |
| Moen Home Care 24-inch Peened Grab Bar | 24 in. long stainless steel grab bar; peened slip-resistant texture; up to 500 lb when installed into a stud or with Moen SecureMount anchors (sold separately) | Check price on Amazon (opens in a new tab) |
| Moen 12-inch Peened Grab Bar with Concealed Screws | 12 in. long stainless steel; peened textured slip-resistant finish; up to 500 lb when installed into a stud or with SecureMount anchors (sold separately); ADA compliant | Check price on Amazon (opens in a new tab) |
Specs are from manufacturer and retailer listings and can change between versions; check the listing before you buy. We don't show prices because they change often; the button shows the current price on Amazon.
Installation
Height is only useful if the bar holds. Mount into studs, solid blocking or rated anchors, following the maker's instructions. On tile, use the right bit and seal holes. If you are not confident, hire a professional installer.
Multiple users
In a shared bathroom, pick a height that suits the person who most needs the bar, or add a vertical bar that serves everyone. A slightly lower horizontal bar often works for both tall and short users, while a high bar does not.
Measuring correctly
Measure from the finished floor of the shower, or the bottom of the tub, to the top of the bar. Shower floors slope, so measure at the bar's position. In a tub, the tub bottom is the reference, not the bathroom floor.
Common mistakes
- Mounting at a height that suits the installer, not the user.
- Measuring from the bathroom floor instead of the tub bottom.
- Putting a bar where a stud happens to be rather than where it is needed. Use anchors or blocking instead.
- Forgetting the seated position if a chair is used.
Bars for seated users
If the user sits to shower, a horizontal bar at 33 to 36 inches may be too high to push from when standing up. A bar a little lower, or a vertical bar beside the seat, often works better. Test with the chair in place.
Before you drill: a checklist
- User has mimed the movement and the height is marked with tape.
- Studs or blocking located, or rated anchors chosen.
- Bar length suits the wall and the stud spacing.
- Measurements taken from the shower floor or tub bottom.
- The bar does not block controls, the shower head or a seat.
- Silicone, the right drill bit and the maker's fasteners ready.
After installing, ask the user to hold the bar during a dry run in the empty shower. If the height feels wrong, it is better to know now than after the first wet shower.
FAQ
What is the standard grab bar height in a shower?
ADA guidance for public buildings places horizontal bars 33 to 36 inches above the floor, to the top of the bar.
How high should a vertical grab bar be?
Commonly starting around 36 to 40 inches and extending upward, so users of different heights can grip it.
Should home grab bars follow ADA heights?
They are a good starting point. Adjust for the user's height and how they move.
Where do I measure grab bar height from?
From the shower floor or tub bottom to the top of the bar.
Do I need a lower bar in a bathtub?
A lower bar 8 to 10 inches above the rim can help when sitting down and standing up in the tub.