KitQuarter

Bathroom Remodel Cost Calculator

Work out what your bathroom remodel costs before you hire a contractor. Enter your bathroom size and finish level to see a line by line estimate with a contingency allowance. Free, no sign-up, everything runs in your browser.

The floor area of the bathroom. A standard full bath is 35 to 50 sq ft.

Budget keeps the layout with stock fixtures. Mid-range is the most common choice.

Tick this if you move the toilet, shower or sink.

A buffer for water damage and surprises behind walls. 10% is typical.

Formula: base cost = bathroom area x rate per square foot. Moving plumbing adds $5,000. Total = (base + plumbing move) x (1 + contingency).

James Carter, Math and Tools Editor
Reviewed by James Carter, Math and Tools Editor · 47 calculator guides
Formulas verified against standard references. Calculator logic tested with verified worked examples. Published: November 10, 2026 | Last updated: November 10, 2026. Fact-checked: November 10, 2026. Our methodology

How to Use the Bathroom Remodel Cost Calculator

Getting a remodel estimate takes four quick entries. The tool prices the room by size and finish level, then adds the plumbing move and your contingency.

  1. Enter your bathroom area in square feet.
  2. Pick your finish level. Budget uses stock fixtures and ceramic tile, mid-range uses a semi-custom vanity and porcelain tile, high-end uses a custom vanity and natural stone, and luxury uses fully custom cabinetry and designer fixtures.
  3. Tick the plumbing box if you move the toilet, the shower or the sink, then set your contingency. 10% is typical.
  4. Press Calculate, or press Enter. The total appears first and large, with the base cost, the contingency and the labor share below. Press Reset to clear the form and start over.
A photo of a bright newly remodeled modern bathroom with a walk-in glass shower, white vanity and marble countertop
A 50 sq ft mid-range bathroom comes to about $10,450 with contingency.

The Bathroom Remodel Cost Formula

The bathroom remodel cost formula is base cost = bathroom area x rate per square foot. Moving plumbing adds $5,000, and the total is (base + plumbing move) x (1 + contingency). The rates per square foot are $100 for budget, $190 for mid-range, $325 for high-end, and $525 for luxury.

The total splits into shares that match how contractors price the job. Labor takes 50%, fixtures and plumbing take 18%, tile and waterproofing take 12%, vanity and countertop take 10%, and shower and tub take 10%. Those shares add to 100%, so the breakdown always matches the total. Our tile calculator prices the floor and shower tile separately if you want that detail.

Worked Example: 50 sq ft Mid-Range Bathroom

A bathroom is 50 sq ft, mid-range finish, with no plumbing move and a 10% contingency. Here is exactly what the calculator does.

  1. Base cost: 50 x $190 = $9,500.
  2. Plumbing move: none, so add $0.
  3. Contingency: 10% of $9,500 = $950.
  4. Total: $9,500 + $950 = $10,450.

The shares of that total are labor $5,225, fixtures and plumbing $1,881, tile and waterproofing $1,254, vanity and countertop $1,045, and shower and tub $1,045. As a second check, a 25 sq ft budget powder room costs 25 x $100 = $2,500, plus 10% contingency, for $2,750. The same steps work for any bathroom, so try your own numbers in the tool above.

A photo of a tile setter installing large porcelain floor tiles in a bathroom under renovation
Labor is half the budget, because four trades work in a small space.

Why Labor Is Half the Budget

Labor typically runs 40% to 65% of a bathroom remodel budget, higher than most other rooms, because plumbing, electrical, tile and carpentry all need skilled work in a small space. The plumber, the electrician, the tile setter and the carpenter each visit separately, and each one works around the others.

The vanity and the wet area account for over 55% of a typical bathroom remodel budget, so the shower and the vanity are the two lines to watch. Waterproofing is part of the tile work, and it is the line you never skip, because a failed shower pan means tearing the room out again. A standard 80 sq ft full bathroom renovation costs an average of $12,500 to $17,500 for a pull and replace remodel that keeps the plumbing in the same place.

What Pushes the Price Up

Moving plumbing is the biggest jump. Relocating a toilet, a shower or a sink adds $3,000 to $7,000, and this calculator adds a flat $5,000 for the move. A tub to walk-in shower conversion adds cost too, because it means new waterproofing, new tile and often a new drain.

Water damage is the surprise that shows up once the walls open. Hidden leaks, mold and rotted subfloor are common in older bathrooms, and they are exactly what the contingency is for. Custom tile work, natural stone, heated floors and a steam shower push the finish level up, and a luxury primary bath with those features can pass $50,000. A half bath runs about $3,000 to $9,000, a standard full bath about $10,000 to $25,000, and a large primary bath about $25,000 to $60,000.

How to Keep Costs Down

Keep the layout. Leaving the toilet, the shower and the sink where they are avoids the $5,000 plumbing move and most of the demolition. Refinish the tub instead of replacing it, pick a stock vanity over a custom one, and choose mid-range fixtures that look good without designer prices.

Get three itemized bids before you set a budget, and check that each one lists labor, fixtures, tile, vanity and shower separately. Keep your 10% contingency untouched until the walls open up, because that money is for the water damage you cannot see yet. Our flooring calculator and paint calculator price the finishing work that often goes with the job.

A photo of a close-up of a modern bathroom vanity with a vessel sink, brushed nickel faucet and a large round mirror
A stock vanity with good fixtures beats a custom vanity on value.

Frequently asked questions

How much does a bathroom remodel cost?

Most homeowners spend $12,000 to $25,000 on a standard full bathroom remodel. A half bath averages around $5,500, a standard full bath about $16,000, and a large primary bath about $38,000. A 50 sq ft mid-range bathroom costs about $10,450 with a 10% contingency.

How much does a bathroom remodel cost per square foot?

Budget runs about $100 per square foot, mid-range about $190, high-end about $325, and luxury about $525. A small bathroom with luxury finishes can cost more per square foot than a large one with budget materials.

How long does a bathroom remodel take?

A standard full bathroom takes 3 to 4 weeks. A cosmetic refresh takes far less, while a full gut with a plumbing move takes longer, especially if water damage shows up behind the walls.

Does a bathroom remodel add value?

A mid-range bathroom remodel costs about $25,251 and returns about 66.7% of its cost at resale, according to the Remodeling Magazine Cost vs Value report. The exact return depends on your home, your neighborhood and the quality of the work.

How much does it cost to move a toilet or shower?

Relocating plumbing adds $3,000 to $7,000, and this calculator adds a flat $5,000 for the move. Keeping the toilet, shower and sink in place is the single biggest saving on most remodels.

Do I need a permit for a bathroom remodel?

Most towns require a permit when you move plumbing or electrical work, and many require one for a full gut. A cosmetic refresh with no plumbing or electrical changes usually does not need one, but check with your local building department first.

This is an estimate for planning. Actual prices vary by scope, materials, contractor and area, so get at least three itemized bids before you set a budget. See our disclaimer.