Timeline calculator
How Long Does a Tub-to-shower Conversion Take?
How long does a tub-to-shower conversion take? Enter the size of the job below.
Project Mode
Estimates based on experienced contractor pace.
How to Use This Tub-to-shower Conversion Timeline Calculator
- Use this tub-to-shower conversion timeline calculator. Enter the number of conversions, since each tub-to-shower change is calculated on its own.
- Enter the new shower size in square feet for the finished floor footprint of the enclosure.
- Indicate whether you want a custom tile shower, which adds significant time over a prefab acrylic surround.
- Set your working hours per day, then read the completion estimate that accounts for demo, plumbing, waterproofing, and finishing.
Formula Breakdown
Every number you type is listed below before the calculation steps. This page answers how many days the job takes, not what it costs.
What you enter
These are the job-size and yes-or-no questions that set the day count.
- Number of Conversions
- New Shower Size (sq ft)
- Custom Tile Shower?
- Working hours per day
If you are doing it yourself
These values are used only when you choose I am doing it myself.
- Project ModeHire it out sets DIY extras to zero. I am doing it myself applies the values below.
- Years of DIY experience
- Snack or drink breaks per day
- Step-outside breaks per day
- Unplanned store trips
- Phone-check pauses per day
- Shower Pan Level Adjustment Rounds
Show the math (technical)
These steps turn the numbers you typed into hours and days. You do not need this to use the calculator.
- Person-hours (one person doing all the work)
Number of Conversions × (8 + New Shower Size (sq ft) × 0.5 + Custom Tile Shower? × 16)Hours if one person did all the work. - Extra DIY hours (trips and slower days)
Snack or drink breaks per day × 0.25 + Step-outside breaks per day × 0.25 + Unplanned store trips × 1.5 + Phone-check pauses per day × 0.133 + Shower Pan Level Adjustment Rounds × 0.333Hours if one person did all the work. - Days until this is done
ceil(((Number of Conversions × (8 + New Shower Size (sq ft) × 0.5 + Custom Tile Shower? × 16)) × (1 + diyMode × max(0, 0.65 − Years of DIY experience × 0.12)) + diyMode × (Snack or drink breaks per day × 0.25 + Step-outside breaks per day × 0.25 + Unplanned store trips × 1.5 + Phone-check pauses per day × 0.133 + Shower Pan Level Adjustment Rounds × 0.333)) ÷ Working hours per day) + 3This result is shown in days.
How the Tub-to-shower Conversion Timeline Estimate Works
This tub-to-shower conversion timeline calculator turns the size of the job, how hard the work is, and how many hours you work in a day into a day count. Use it to see how long a tub-to-shower conversion takes, and where a DIY calendar stretches past a hired crew.
Each conversion starts at 8 hours plus 0.5 hours per square foot of new shower, and a custom tile enclosure adds a substantial 16 hours. A single 12 square foot prefab conversion is 8 + 12 x 0.5, or 14 hours.
Make it a custom tile shower and it jumps to 8 + 12 x 0.5 + 16, or about 30 hours, because tiling adds layout, cutting, cure time, and grouting on top of the base work.
The completion estimate adds three days on top of the divided hours for demo, waterproofing cure, and finishing. DIY mode inflates the hours for inexperience and adds extra DIY hours, especially leveling the shower pan, so an amateur conversion often runs two to three times a pro's multi-day timeline.
Why Use This Tub-to-shower Conversion Timeline Calculator
- Turns the size of the tub-to-shower conversion job into a day count you can plan around.
- Shows hours if one person did all the work, then how a hired crew or a DIY weekend turns that into calendar days.
- The day count is from hours of work, not from a cost estimate.
- Lets you compare hire-it-out versus doing it yourself.
What Changes How Long a Tub-to-shower Conversion Takes
- Job size: the values for Number of Conversions, New Shower Size, and Custom Tile Shower? usually move the day count more than anything else.
- How many people are on the job: more people shorten calendar days, not the person-hours total.
- Doing it yourself: shorter days, extra trips, and learning time stretch the calendar past a hired crew.
DIY vs Professional Tub-to-shower Conversion Timeline
Person-hours
Hours if one person did all the work. A two-person crew does not double this number — it shortens calendar days.
Days until this is done
How many calendar days until the work is finished. This page does not add extra waiting days like paint dry or flooring sitting in the room.
Hired vs doing it yourself
Hired uses a typical crew and full workdays. Doing it yourself usually starts at one person and shorter days, so the calendar stretches.
Typical Tub-to-shower Conversion Timeline
For example, a typical tub-to-shower conversion takes about 9 days.
That is about 32 hours if one person did all the work. There are no extra waiting days on the typical estimate.
The calculator adds three days for those unavoidable phases, so the tub-to-shower timeline reflects real cure and finishing time, not just the labor hours.
Tub-to-Shower Time Estimate: Prefab vs Tile
A prefab acrylic surround snaps together relatively quickly and is the faster path. It suits homeowners who want the change done without a long bathroom shutdown.
A custom tile shower adds significant time for layout, cutting, waterproofing, and grouting, but delivers a fully personalized result that a prefab kit cannot match.
DIY Tub-to-Shower Timeline
This conversion touches plumbing, waterproofing, and often tile, so DIY projects commonly take two to three times longer than a pro's estimate, with the shower pan being the make-or-break step.
A confident DIYer might handle a prefab surround, but a custom tile pan and waterproofing are where many first-timers get in over their heads.
Planning the Bathroom Downtime
Because the bathroom is out of service during the work, plan for the full multi-day span and arrange an alternate shower.
Order all fixtures and materials before demo so the project moves through its cure-dependent phases without stalling.
Frequently Asked Questions About How Long a Tub-to-shower Conversion Takes
How long does a tub-to-shower conversion take?
For example, a typical tub-to-shower conversion takes about 9 days.
That is about 32 hours if one person did all the work. There are no extra waiting days on the typical estimate.
Does DIY take longer than hiring a pro for a tub-to-shower conversion?
Usually. A homeowner timeline often runs two to three times a professional tub-to-shower conversion timeline estimate once you add learning time, shorter days, and supply runs.
What delays a tub-to-shower conversion?
Missing parts, a slower first try, and surprises in the work are what most often stretch the calendar past the first tub-to-shower conversion timeline estimate. Weather, dry time, or inspections can add extra days on some jobs, but they are not the whole story.