While 40-45 square feet runs the small side, the average size of a full bath is anywhere between 40-60 square feet, though this is dependant on the bathroom style and how many bathrooms your space currently has.
The average size for a full bathroom is around 60 square feet (6×10), which is considered the most efficient size for a bathroom.
Overall Sizes | Bathroom Standard Size
In residential construction, the minimum size of a bathroom that includes the three functional features – a wash basin, a WC, and a shower area – should be 7' X 4' (7 feet by 4 feet).
A full bathroom is made up of four parts: a sink, a shower, a bathtub, and a toilet. Anything less than that, and you can't officially consider it a full bath. Therefore, a bathroom with a sink, toilet, and shower is considered a three-quarter bath. A bathroom with just a sink and a toilet is a half-bath.
A . 75 or ¾ bath is a bathroom that contains one sink, one toilet and a shower or a bath. Traditionally, a full bath contains at least one sink, one toilet, a shower and a bath, so a . 75 bathroom only has either a shower or a bath.
The short and simple answer to whether a walk-in shower is considered a full bath is “no”. It is not. As mentioned previously, a bathroom is considered a full bath only when it has all the 4 components of a sink, toilet, shower and bathtub. If it doesn't include all 4 features, then it doesn't count.
The average walk-in shower in the U.S. measures 60" x 30", though size options can vary widely, typically up to 60" x 42" for a rectangular shower and 42" x 42" for a square one. For smaller bathrooms, most experts recommend a shower enclosure no smaller than 36" x 36".
With shower installation, the minimum shower size is 32 x 32 inches. However, most typical shower sizes are 36 x 36 inches.
A 5×7 bathroom is often thought of as the minimum size for a bathroom. It's just big enough to fit a toilet, shower, and vanity sink. However, maneuverability will be extremely limited and a bathroom of this size isn't very accessible to those with mobility issues.
A full bathroom contains all four fixtures;a shower, a bathtub, a sink, and a toilet. A ¾ bathroom is missing one of the fixtures, either a shower or bathtub. While both bathrooms are similar, a ¾ bathroom is more suited for smaller homes as a shower is more efficient than a bathtub.
It could be a single three-quarter bath with three fixtures like a toilet, sink, shower, or tub. Or it could mean a half bath with a toilet and sink plus a quarter bath with one fixture like a toilet, shower, or sink. Even the “one” in 1.75 is not so cut and dry.
What is a Comfortable Size for the Shower? A standard shower enclosure size starts from 30″ x 30″ (700mm x 700mm) but most people feel comfortable in the shower cubicle size of 48″ x 36″ (1200mm X 900mm).
Frequently Asked Questions. What is the smallest recommended size for a shower? A shower should be 36 inches square (36 inches x 36 inches). For tiny spaces, 30 inches square (30 inches x 30 inches) is the smallest space that can be used for a shower.
For Large Bathrooms
The average walk-in shower for a large bathroom measures 60″ x 42″ for a rectangular shower. While a 42″ by 42″ to 48” by 48” square enclosure is considered standard shower size for large bathrooms.
A 10×10 bathroom or 100 square feet is a large space, generally used for a master bathroom, although master bathrooms range from 100-210 square feet. This space is large and spacious enough to fit a toilet, a bathtub, a shower, and a large vanity that can house two sinks.
What Rooms Are Included in Square Footage? Rooms that will typically be included in a home's square footage are any finished rooms that have a ceiling, walls, and a floor, such as living room, bathrooms, kitchens, bedrooms, and finished basements.
Typical Small Bathroom Sizes
For a ¾ bath, 40 square feet is a good size (about 3.7 m2). A small full bathroom, with a sink, toilet, and combined shower/bathtub is often 40-45 square feet (about 4 - 4.5 m2).
A doorless shower layout requires a larger footprint than a standard tub or shower stall. Building codes may specify that a standard shower stall must be a minimum of 36 inches by 36 inches while the average doorless shower is about seven feet by four feet with many much larger.
Bathtub Sizes and Measurement Tips
The most common bathtub installation is an alcove bath with an overall size of 60 inches x 32 inches. Standard tubs usually have external measurements around 60 inches long, 30 inches wide and 14 to 16 inches high.
A walk-in tub is often less expensive when compared to a walk-in shower. But the convenience of a shower makes it a top trending choice among shower and bath solutions. For the most part, homeowners are choosing to upgrade showers when remodeling bathrooms.
If you or a loved one have limited mobility and you're remodeling primarily to make your bathroom more accessible, a walk-in shower is preferable as it eliminates the need to step over a high ledge and into a potentially slippery tub.
Walk-in showers possess fewer corners and lesser spots for grime and dirt buildup. You also don't need to worry about cleaning a tub. If you're keen on saving energy and using less water, walk-in showers are perfect. They consume 17 gallons of water, seven gallons less than a bath's 24-gallon consumption.
As for size, your shower should be at least three feet square and have a wide entry, so there's ample room to get in and move around. Designer Mary Jo Peterson, CKD, CBD and a universal design specialist in Brookfield, Conn., says 42 by 60 inches is even better, particularly for showers that have no door or curtain.