Definition: A gallon is a unit of volume specifically regarding liquid capacity in both the US customary and imperial systems of measurement. The US gallon is defined as 231 cubic inches (3.785 liters). In contrast, the imperial gallon, which is used in the United Kingdom, Canada, and some Caribbean nations, is defined as 4.54609 liters. In both systems, the gallon is divided into four quarts. Quarts are then divided into two pints and pints are divided into two cups. A cup is comprised of two gills, making one gallon equal four quarts, eight pints, sixteen cups, or thirty-two gills. Further differentiating the US and the imperial gallon, a US gill is divided into four fluid ounces, while an imperial gallon is divided into five. A US fluid ounce is therefore 1/128 of a US gallon while an imperial fluid ounce is 1/160 of an imperial gallon. Show
History/origin: The term gallon most closely originates from "galon" in Old Northern French and developed as a system for measuring wine and beer in England, resulting in measures such as the wine gallon, ale gallon, and imperial gallon. Current use: In the United States (US), gallons are often used for larger containers, such as half gallon tubs of ice cream or one-gallon cartons of milk. Gallons are also widely used in fuel economy expression in the US, as well as some of its territories. The imperial gallon is used even more sparingly than the US gallon, with most countries around the world using liters when referencing fuel. Cubic inchDefinition: The cubic inch (symbol: in3) is a unit of volume in the Imperial and United States customary systems of measurement. It is the volume of a cube with measurements 1 in × 1 in × 1 in. It is equal to 16.387064 cm3 or mL. History/origin: The cubic inch is derived from the inch, a unit of length within the imperial and US customary systems of measurement. Since the 1950s and 1960s, with the adoption of the international yard, the inch has been defined as exactly 2.54 cm. Current use: The cubic inch and cubic foot are still used in the United States, and to some extent in the United Kingdom. However, SI (International System of Units) units of measurement are also widely used throughout these countries. In the US, the automotive and aircraft industries in particular use the cubic inch to some extent, though the SI derived or SI accepted units of volume (liter, milliliter, and cubic meter) are also used. To convert a gallon measurement to a cubic inch measurement, multiply the volume by the conversion ratio. Since one gallon is equal to 231 cubic inches, you can use this simple formula to convert: cubic inches = gallons × 231 The volume in cubic inches is equal to the gallons multiplied by 231. For example, here's how to convert 5 gallons to cubic inches using the formula above. 5 gal = (5 × 231) = 1,155 in³ How Many Cubic Inches Are in a Gallon?There are 231 cubic inches in a gallon, which is why we use this value in the formula above. 1 gal = 231 in³ Gallons and cubic inches are both units used to measure volume. Keep reading to learn more about each unit of measure. GallonsThe US liquid gallon is a unit of fluid volume equal to four quarts, eight pints, or sixteen cups.[1] The US liquid gallon should not be confused with the US dry gallon or the imperial gallon, which are different units of measure. The gallon is a US customary unit of volume. Gallons can be abbreviated as gal; for example, 1 gallon can be written as 1 gal. Cubic InchesA cubic inch is a unit of volume equal to the space consumed by a cube with sides that are one inch in all directions. One cubic inch is equivalent to about 16.387 cubic centimeters or 0.554 fluid ounces.[2] The cubic inch is a US customary and imperial unit of volume. A cubic inch is sometimes also referred to as a cubic in. Cubic inches can be abbreviated as in³, and are also sometimes abbreviated as cu inch, cu in, or CI. For example, 1 cubic inch can be written as 1 in³, 1 cu inch, 1 cu in, or 1 CI. Aquarium dimensions and overall aquarium sizes may vary depending on the manufacturer’s calculation. When you buy a tank the actual aquarium dimensions of one brand of the tank may be larger or smaller than the aquarium dimensions for the same gallon tank size. Even the trim type or color may change the aquarium dimensions of a tank.Contents
Aquarium Dimensions: Take Inside MeasurementsYou should always measure the tank size, do not just follow the label on the box or the store marketing information. Remember the inside of the tank is the water volume – not the outside. Measure inside the glass or acrylic so that you are not allowing for the thickness of the walls when you are working out how much water it will hold… You know that sometimes items are returned to a store, put into the wrong box, and then resold. Always better to measure and check before leaving the store. Typical Store and Online Fish Tank SizesIf you have the aquarium size already, maybe buying online, the following will help you check the water size in US gallons or liters. Remember the overall outside size of the tank will be bigger allowing for the glass thickness. For example, a small aquarium may have glass that is 1/8 of an inch, whereas a larger tank may need glass 3 /4 of an inch thick. For the actual tank size use our aquarium calculator here. How much water will the fish tank really hold?Theoretical volumeThis is the absolute volume when an otherwise empty tank is filled to the very top edge with water. This is the size that the manufacturer will often state. Realistic volumeAllows for decor displacement and that the tank won’t be filled to the very top edge. As such this is a far more accurate measurement to use. How high you fill the water and what you place in the tank will decrease the amount of water volume to a more realistic lower quantity. For example, a small 2.5 Gallon tank 12 x 6 x 8 holds 2.5 Gallons when completely full to the top. But allowing for the water to be lower than the very top rim, some plants and decorations in the tank the actual realistic volume is more likely to be 2.25 Gallons. The following table provides typical fish tank dimensions for the most commonly available unless you buy a custom made.
TYPICAL AQUARIUM DIMENSIONSAll measurements are for the INSIDE of the tank. These are ‘Theoretical Volumes’ Aquarium Dimensions: Sizes Under 100 GallonsAquarium Size Inches Centimetres 2.5 Gallon Tank Dimensions 12 x 6 x 8 30.5 x 15.2 x 20.3 5.5 Gallon Tank Dimensions 16 x 8 x 10 40.6 x 20.3 x 25.4 10 Gallon Tank Dimensions 20 x 8 x 12 50.8 x 20.3 x 30.5 15 Gallon Tank Dimensions 24 x 12 x 12 61 x 30.5 x 30.5 15 Gallon Tank Dimensions 20 x 10 x 18 50.8 x 25.4 x 45.7 20 Gallon Tank Dimensions 24 x 12 x 16 (H) 61 x 30.5 x 40.6 20 Gallon Long Dimensions 30 x 12 x 12 76.2 x 30.5 x 30.5 20 Gallon Tank Dimensions 20 x 10 x 23 (Extra High) 50.8 x 25.4 x 58.4 25 Gallon Tank Dimensions 24 x 12 x 20 61 x 30.5 x 50.8 28 Gallon Tank Dimensions 30 x 12 x 18 76.2 x 30.5 x 45.7 30 Gallon Tank Dimensions 36 x 12 x 16 91.4 x 30.5 x 40.6 40 Gallon Tank Dimensions 36 x 13 x 20 (High) 91.4 x 33 x 50.8 40 Gallon Tank Dimensions 48 x 13 x 16 (Long) 121.9 x 33 x 40.6 45 Gallon Tank Dimensions 36 x 12 x 24 91.4 x 30.5 x 61 50 Gallon Tank Dimensions 36 x 18 x 18 91.4 x 45.7 x 45.7 55 Gallon Tank Dimensions 48 x 13 x 20 121.9 x 33 x 50.8 60 Gallon Tank Dimensions 48 x 13 x 22 121.9 x 33 x 55.9 65 Gallon Tank Dimensions 48 x 13 x 24 121.9 x 33 x 61 75 Gallon Tank Dimensions 48 x 18 x 21 121.9 x 45.7 x 53.3 90 Gallon Tank Dimensions 48 x 18 x 24 121.9 x 45.7 x 61
Aquarium Dimensions: Sizes Over 100 GallonsAquarium Size Inches Centimetres 110 Gallon Tank Dimensions 48 x 19 x 28 121.9 x 45.7 x 71.1 120 Gallon Tank Dimensions 48 x 24 x 24 121.9 x 61 x 61 125 Gallon Tank Dimensions 72 x 19 x 21 182.9 x 45.7 x 53.3 150 Gallon Tank Dimensions 72 x 18 x 27 182.9 x 45.7 x 68.6 180 Gallon Tank Dimensions 72 x 24 x 24 182.9 x 61 x 61 210 Gallon Tank Dimensions 72 x 24 x 28 182.9 x 61 x 71.1 For the actual tank size use our aquarium calculator here. There are other types of tanks such as bow front tanks, hexagon, and round tanks as well as bespoke made-to-measure shapes. It is important to plan your tank allowing for the space it will occupy, ensuring plenty of room for access and cleaning around the tank, the stand, and all the equipment.
Aquarium WeightBelow is an estimate of aquarium weights comparing empty to full, saltwater, or freshwater. The weights are an estimate because the amount of rock, planting, and thickness of glass are assumed figures. How Much Does a Gallon of Water Weigh?A gallon of freshwater at 39.2ºF, or 4ºC, and a specific gravity of 1.000 weighs 8.3454 lbs. The weight of the water will increase directly proportionate to the weight of the salt being dissolved in the water. 1 gallon of saltwater at 1.025 specific gravity equals 8.554 lbs. For more details on ‘how much a gallon of water weighs see our post here For your own tank, you decide how much planting etc will be added and alter the weights to suit your needs. How big is a 20 gallon tank in inches?As a general rule though, your average 20-gallon tank is going to measure in at 30 inches long by 12 inches wide by 12 inches tall. If it's made out of high quality glass it's going to weigh about 225 pounds when it's been filled up with water too.
What is the volume of a 20 gallon tank?Size Matters True Tank Volume. How many gallons is a 36x12x12 tank?20 Gallon Custom Aquarium, 36x12x12.
How many gallons is a 30 by 18 inch tank?How Much Does a Gallon of Water Weigh?. |
How many cubic inches is a 20 gallon tank?
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