1. Measure the floor
Measure length and width in feet. Record shower stalls and vanity nooks as separate sections.
계산기 작업 공간
총 평방피트를 계산하고, 바닥재를 추정하고, 프로젝트를 계획하려면 욕실의 치수를 입력하세요.
욕실 평방피트 계산기를 사용하여 욕실의 면적을 계산하세요. 욕실의 치수를 입력하면 평방피트, 평방야드, 평방미터, 에이커로 즉시 결과를 얻을 수 있습니다. 내장된 비용 계산으로 바닥재, 카펫, 타일 재료 필요량을 추정하세요.
프로젝트에 맞는 전문 계산기를 선택하세요 — 방, 형태, 재료, 야외 공간, 단위 변환.
Bathroom square footage is the total floor area of a bathroom measured in square feet. A standard full bathroom is 36-50 sq ft (3.3-4.6 m²). A half bath is 18-24 sq ft. A master bathroom is 60-160 sq ft.
Getting started
To calculate bathroom square footage, measure length and width of the bathroom floor in feet and multiply length × width. A 5 × 8 ft (1.52 × 2.44 m) bathroom equals 40 sq ft (3.7 m²). Subtract bathtub and shower base footprints from floor area for tile estimates.
Measure length and width in feet. Record shower stalls and vanity nooks as separate sections.
Subtract bathtub and shower base footprint from the floor area for tile or vinyl coverage.
Add 10-15% extra tile for cuts around fixtures. Diagonal patterns need 15-20% extra.
Quick reference
Material pricing
Bathroom tile costs $7-25 per sq ft installed. Multiply bathroom area by the unit price to get total tile cost.
There are 2 steps to calculate material cost:
A 40 sq ft bathroom needs about 44-46 sq ft of tile (10-15% waste factor). Order 1-2 extra boxes from the same dye lot for future repairs.
FAQ
A standard full bathroom is 36-50 square feet. A half bath is typically 18-24 sq ft. A master bathroom can be 60-160 sq ft or more.
A 5x8 bathroom is 40 square feet (5 ft x 8 ft = 40 sq ft). This is one of the most common full bathroom sizes.
Calculate the bathroom square footage and add 10-15% for cuts and waste. A 40 sq ft bathroom needs approximately 44-46 sq ft of tile.
Yes, the area under the bathtub is included in total bathroom square footage. However, for tiling projects, subtract the bathtub footprint from the floor area since you won't tile under it.
Measure the height and width of each wall, multiply for wall area, then subtract windows and doors. Use the Wall with Window calculator for walls with openings.
Most building codes require a minimum of 15-18 square feet for a half bath with a toilet and sink. A full bathroom with a shower needs at least 36 square feet.
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