How Much Shower Fits Where Your Tub Was? Sizing a Tub-to-Shower Conversion
How much shower can you actually get out of the space your tub leaves behind? Short answer: usually more than you think, and it almost always feels bigger. A standard alcove tub eats about 15 square feet of floor and gives you a cramped ledge to step over. Pull it out, and a tub-to-shower conversion can turn that same footprint into an open, walk-in shower that reads twice its size. The trick is knowing your real numbers before you fall in love with a photo online.
The problem: you are picturing the tub, not the space
Most homeowners in Colorado Springs measure their bathroom by the fixture that is already there. A tub feels like it takes up a set amount of room, so people assume the shower that replaces it must be small or awkward. That is backwards.
The typical alcove tub in an El Paso County home is 60 inches long and 30 to 32 inches deep, tucked between three walls. That is a five-foot run of usable width, which is a generous shower footprint. The catch is that a tub uses vertical volume you never see from the doorway: the deck, the apron, and the deep basin. Once that mass is gone and the walls go floor to ceiling in one material, the room breathes.
So the real question is not “will a shower fit” but “how do I use all five feet without leaving dead space or creating a splash problem?” That is where sizing decisions actually happen.
Diagnosing your real footprint
Before anyone quotes you, three measurements decide almost everything.
Width, wall to wall. Measure the finished opening where the tub sits, not the tub itself. A 60-inch alcove usually gives you a 60-inch shower. A few older Colorado Springs homes have 54-inch or 66-inch tub bays, and that changes your pan options entirely.
Depth, front to back. Standard is 30 to 32 inches. That is comfortable for a shower, but if you want a bench or a curbless entry, depth is the number that gets tight. Under 30 inches and a fixed bench starts to crowd the spray zone.
Ceiling height and the window. Many tub alcoves have a window right over the old tub. That window sits low, and in a shower it becomes a water and rot problem. Sizing your surround means deciding whether to tile around it, shrink it, or move to a glass block or obscured unit.
Write those three numbers down. They tell your remodeler whether you are looking at a drop-in acrylic pan, a custom tiled base, or a low-threshold build. If your bathroom is on the smaller side, our guest bath remodel framework walks through how tight rooms still get an open feel.
What fits: three real Colorado Springs examples
Numbers make this concrete. Here are three common conversions and what each footprint supports.
The standard 60 by 32 guest bath. Pull the tub, and you have 60 inches of width. That is enough for a 60 by 32 shower base with a fixed glass panel on one side and a 24-inch open entry, no door needed. A corner shelf and a recessed niche fit easily. Total glass and tile feel light, and the room looks larger than it did with a tub crowding the floor.
The 54-inch older-home alcove. Some 1970s and 1980s Springs homes ran 54-inch tubs. That still gives a comfortable 54 by 30 shower, but stock acrylic pans in that odd size are limited, so this one usually goes to a custom tiled base or a made-to-order pan. Plan on a slightly longer lead time for the base.
The 66-inch primary bath bay. A wider alcove is a gift. Sixty-six inches lets you build a 66 by 32 shower with a built-in 15-inch bench on one end and still keep the spray a full three feet away. That is enough room to add a handheld and a fixed head without the seat getting wet.
Each of these started as the same idea: an unused tub. The footprint decided how far the design could go.
The fix: match the base to your goal
Once you know your three numbers, the base type is the decision that carries the rest.
A drop-in acrylic pan is the fast, clean-lined option when your width matches a stock size like 60 by 32. Fewer surprises, tidy budget. A custom tiled base is the answer for odd widths, curbless entries, or a specific tile look, and it costs more because of the waterproofing labor underneath.
Do not skip the slope conversation. A tub drains through a deep basin, so standing water is never an issue. A shower floor lives or dies on its pitch to the drain, roughly a quarter inch per foot. Get that wrong and you get puddles and, eventually, the leaks we cover in our rebuild articles. This is exactly why a specialist crew that does bathrooms every day matters. It is all we do at Springs Bath Remodel, so the pan, the pitch, and the tile line up the first time.
When to act on it
If your tub sits unused and you are already cleaning around it, sizing your conversion now beats waiting. Summer is a practical time in Colorado Springs and El Paso County: drier weather makes for cleaner demo and material staging, and you are not fighting a holiday schedule. Bring your three measurements to a free in-home design consult, and we will show you exactly what fits before you commit to a look. If budget is your worry first, clearing up a few common cost myths is a good next step.
Frequently Asked Questions
Won’t a shower feel smaller than my tub since I lose the length to soak?
The opposite, almost every time. A tub’s deck and apron block sightlines at floor level. Removing them and running one continuous surround up the wall opens the room visually. A 60 by 32 shower in the same bay usually reads larger than the tub it replaced, even though the footprint is identical.
My alcove is an odd size. Am I stuck with a tiny custom shower?
No. Odd widths like 54 or 66 inches just move you from a stock acrylic pan to a custom tiled base or a made-to-order pan. You keep the full footprint. The only real trade-offs are a bit more cost for the waterproofing labor and a slightly longer lead time on the base.
There is a window right over my tub. Does that kill the conversion?
Not at all, but it does need a plan. Options include tiling a proper waterproof sill around it, swapping to an obscured or tempered unit, or reducing the opening. What you do not want is an untreated window taking daily spray. We size that into the design from the start so it stays dry and looks intentional.