Knowing a tub’s capacity is important when calculating your monthly water bill or considering the environmental impact of your family’s water The capacity of the tub also depends on its depth and the placement of the overflow drain; the capacity of a 30-inch tub with a depth of 14 inches which is in the midrange of standard depths is about 110 gallons. Bathtubs are available in many sizes, a typical size being 30 inches wide and 60 inches long. The inside measurements of this tub could be 23 inches wide, 15 inches deep to the water level and 54 inches long. This tub holds about 80 gallons of water. If this is an extra deep tub, it might hold up to 110 gallons. A very small bathtub might hold 40 gallons, while a larger single person bathtub could easily hold 100 gallons or more. My bath tub holds 110 gallons (pictured above), and my 50 gallon water heater couldn’t even fill it with enough hot water to use the whirlpool jets. Generally, many bathtubs still maintain the standard size of between 5 and 8 Their maximum capacity exceeds that of a standard bathtub. Learn about standard bathtub sizes for alcove, whirlpool, oval, and corner bathtubs to assist you when planning your bathroom remodel. What is the capacity of an average, US, standard run-of-the-mill built in bathtub filled up to the very bottom of the overflow? Thanks! Let me No matter what type of bath you’re installing, whether it’s a freestanding tub or a straight bath, find out how to measure correctly with this quick video: Our bathtubs come in a wide range of sizes, shapes, configurations and depths ensuring that you can find the right tub for your needs. Beautiful design options Shop for the right type of bathtub that fits your style and features that you You’ll need to know if your water heater holds a standard 40 gallons or more and how Most bathtubs hold between 30 and 50 gallons of water. The average bath tub soaker uses the tub at half capacity in order to allow for water displacement when Designed to fit seamlessly within the space of a standard bathtub. vary depending on the water pipe capacity and flow rate of your home’s plumbing system.