Use this free bathroom remodel cost calculator to estimate what your project will cost based on room size, finish level, fixtures, tile, layout changes and where you live. You get an itemized breakdown, a realistic price range and a side-by-side comparison of budget, mid-range and high-end finishes.
Illustrative layout: tub/shower top-left, vanity bottom-left, toilet bottom-right. Dimensions update when you calculate.
Enter your bathroom's length, width and ceiling height in feet, then slide the finish level from budget to high-end. Choose your tub or shower, tile coverage, vanity and any plumbing changes, tick the extras you want, and press Calculate. You will see a total, a likely range, a cost per square foot, an itemized table and a three-way comparison of finish levels.
A bathroom is the smallest room in most homes and often the most expensive per square foot to renovate. Plumbing, waterproofing, tile and electrical work are all packed into a few dozen square feet, and every trade has a minimum charge. That is why a 5×8 bathroom can cost $8,000 with basic finishes and $30,000 with custom tile and a frameless glass shower.
Homeowners use an estimate like this before calling contractors, so quotes make sense when they arrive. If one bid comes in at $9,000 and another at $19,000 for the "same" job, you need to know which line items explain the gap. It also helps when deciding between a full gut and a cosmetic refresh, or when setting aside funds from a home equity line. Landlords and flippers use it to check whether an upgrade will pay back before they commit. Because the calculator separates demolition, fixtures, tile and permits, you can see where trimming one choice, such as a shower surround or a layout change, frees up real money.
The calculator builds the budget from individual line items, each priced at a 2025 U.S. installed average (materials and labor) for the finish level you chose:
The formula is: Total = (sum of line items × location multiplier) + contingency. Location multipliers are 0.85, 1.00, 1.25 and 1.50. Contingency is your chosen percentage of the subtotal. The range shown is −15% to +25% of the total, because overruns are more common than savings.
Safety-minded rounding: every line item and the contingency are rounded up to the next dollar, and the range is rounded outward to the nearest $100. The tool prices work that model codes expect in a bathroom: GFCI protection (NEC 210.8), a 20-amp bathroom receptacle circuit (NEC 210.11(C)(3)), and ventilation by window or exhaust fan (IRC R303.3). Code editions and local amendments vary. This is a planning estimate only, not a bid, an engineering opinion, or permit or inspection approval.
A 5 × 8 ft bathroom with an 8 ft ceiling, mid-range finishes, national average pricing, and the default options above (tub/shower replacement, surround tile, single vanity, 15% contingency):
A mid-range full bathroom remodel in the U.S. typically runs $12,000 to $20,000. Cosmetic refreshes start near $5,000, while high-end projects with custom tile and glass often pass $30,000.
Most 40 sq ft bathrooms land between $9,000 and $18,000 depending on finishes and location. Small rooms cost more per square foot because fixtures and labor minimums don't shrink with the room.
The shower or tub area, including waterproofing, tile and glass, is usually the largest cost. Plumbing relocation and a double vanity are the next biggest budget swings.
A standard remodel takes two to four weeks once materials are on site. Layout changes, custom tile or backordered fixtures can stretch it to six to ten weeks.
Most jurisdictions require permits when you move plumbing, add circuits or change walls, but not for swapping a vanity or toilet. Rules vary, so call your local building department before starting.
Plan for 10–15% on newer homes and 20–25% on older ones or any job with layout changes. Hidden water damage or outdated wiring is the usual reason budgets get used up.
Toolwick