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. The average corner tub is 54 by 54 inches, with a diagonal of 72 inches, and if that tub has a depth of 14 inches, its capacity is 88 gallons. With an overflow drain placement 6 inches below the top of the tub, the capacity is a mere 50 gallons. According to Alliance For Water Efficiency, a standard non-jetted bathtub holds between 25 and 45 gallons of water approximately. 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. To start, the standard bathtub will hold roughly around 80 gallons (302 liters) of water. Much smaller bathtubs can only hold around 40 gallons When filled to capacity (just below the overflow), a standard bathtub holds 42 gallons, but some of that water will be displaced when you get A standard bathtub holds 70 gallons of water. On average it takes 7 1/2 minutes to drain a bathtub. How many gallons of water go down the A standard bathtub holds 24 gallons of water when filled to the rim. Larger tubs hold up to 110 gallons of water when filled all the The standard bathtub in most American homes can hold 24 gallons of water before it begins to overflow the rim of the tub. Garden or soaking style bathtubs may An average 5ft bathtub can hold 60 gallons of water before it begins to over A normal 60 inch tub will hold less than 40 gallons of water but if The capacity of an average, US, standard run-of-the-mill built in bathtub filled up to the very bottom of the overflow, which is as full as you can Pour the water into an empty gallon container and estimate how many gallons of water you used. You need to convert the volume of water in the tub to gallons.