You are watching: How many pints equal a pound

**There are also issues of temperature and density, both of which are addressed further down the page. The purpose of this page is for practical, everyday business-of-living uses only. For that it will serve you well.**

Be advised that this page is US-centric. As an example, this does not work in the UK where a pint is 1.25 pounds as opposed to US 1.043 pounds at room temperature (RT).

## How Many and How to Calculate Pints, Quarts, Gallons to and from Pounds

Alternate Titles or QuestionsHow to Convert Pints to Quarts to Gallons to and from Pounds?Volume to Weight Conversions or Weight to Volume Conversions – 8:4:1:8.How many pounds in X pints, quarts, or gallons?How much does X gallons, quarts, or pints weigh?A list of most-searched-for questions and answers is included. There is also a specific section relating to the calculating of the size/volume/weight of home water heaters.Volume to Weight Conversions. Weight to Volume Conversions.Simple math to convert or calculate pints, quarts, gallons, and pounds. |

**The resulting estimates and extrapolations from this rule will serve you well for most everyday purposes. For scientific and industrial purposes where greater accuracy is required, a pint weighs a little bit more than a pound (1.043 lb.).**

## First – The Quick Answers to Volume Amounts and Ratios

### Volume Definitions

2 pints equals 1 quart.4 quarts equals 1 gallon.8 pints equals 1 gallon.### Or to Put It Another Way...

1 quart equals 2 pints.1 gallon equals 8 pints.1 gallon equals 4 quarts.Converting Volume to WeightConverting volume to weight has everything to do with the density of the liquid. Fortunately, this question usually has to do with:How much does the gasoline in your gas tank or a gas can weigh?How much does a specific container of water or other mostly-water grocery items weigh?Questions relating to home water heater size, calculated water volume and the resulting weight.The rule of thumb, and the expression to remember is: "A pint"s a pound the world around."**he Most-Searched-for Questions and Answers forHow Many PoundsHow much does 1.5 quarts weigh? Answer is 3 pounds.How much does 2 quarts weigh? Answer is 4 pounds.How much does 3 quarts weigh? Answer is 6 pounds.How much does 5 quarts weigh? Answer is 10 pounds.How much does 6 quarts weigh? Answer is 12 pounds.How much does 10 quarts weigh? Answer is 20 pounds.How much does 16 quarts weigh? Answer is 32 pounds.How much does 5 gallons weigh? Answer is 40 pounds.How much does 10 gallons weigh? Answer is 80 pounds.How much does 15 gallons weigh? Answer is 120 pounds.How much does 20 gallons weigh? Answer is 160 pounds.How much does 50 gallons weigh? Answer is 400 pounds.How much does 55 gallons weigh? Answer is 440 pounds.How many pints is a pound? Answer is 1.0 pint.How many quarts is a pound? Answer is 0.5 quarts.How many gallons is a pound? Answer is 0.125 gallons.**

A major component of converting fluid volume to a weight measurement is the density of the fluid. For gasoline, water, and most grocery items; the rule of a-pint"s-a-pound will serve you just fine. However, as an example, the rule probably wouldn"t work too well with any significant volume of engine oil. As an extreme example, the liquid metal/element mercury would totally throw the pint"s-a-pound rule out the window. So of course would any molten metal or alloy.Fluid density is also affected by temperature. This is why many people fill their gas tank first thing in the morning. There is more gas per gallon at 50 degrees Fahrenheit than at 90 degrees Fahrenheit. It should be noted the percentage difference is in the low single-digits.

Here is a worthwhile page from NASA about Density, Mass (weight), Volume for both solids and liquids.

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### Basic Formulas

A pint weighs a pound.There are two pints in a quart, so a quart weighs 2 pounds.There are four quarts in a gallon, so a gallon weighs 8 pounds.And the eight pints in a gallon, also weighing 8 pounds.This pretty much answers the question. Here are some other typical examples:Some Household ExamplesA 1-quart bottle of Gatorade weighs 2 pounds. Note: there are 2 pints in a quart and 4 quarts in a gallon. As a side note: there are 16 fluid ounces in a pint, 32 fluid ounces in a quart; 1 and 2 pounds respectively.A 2-liter bottle of Pepsi would convert to a weight of a little over 4 pounds. Note: A liter is slightly more than a quart.Some gallon examplesA 1-gallon container would convert to a weight of 8 pounds.A 5-gallon container weighs 40 pounds.A 10-gallon container weighs 80 pounds.A full, 25-gallon SUV gas tank means you are hauling around 200 pounds of fuel.A typical city water tower can hold anywhere from 300,00 to 600,000 gallons of water, which converts to a weight of 2,400,000 to 4,800,000 pounds of water sitting on those "stilts".## The Density of the Liquid Significantly Affects the Rules Concerning Volume Conversion Calculations to Weight

A major component of converting fluid volume to a weight measurement is the density of the fluid. For gasoline, water, and most grocery items; the rule of a-pint"s-a-pound will serve you just fine. However, as an example, the rule probably wouldn"t work too well with any significant volume of engine oil. As an extreme example, the liquid metal/element mercury would totally throw the pint"s-a-pound rule out the window. So of course would any molten metal or alloy.Fluid density is also affected by temperature. This is why many people fill their gas tank first thing in the morning. There is more gas per gallon at 50 degrees Fahrenheit than at 90 degrees Fahrenheit. It should be noted the percentage difference is in the low single-digits.

Here is a worthwhile page from NASA about Density, Mass (weight), Volume for both solids and liquids.

## List of Frequent Volume-to-Weight Conversion Q&A

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**. This tutorial is specifically designed for people who are perfectly smart enough to learn algebra, but have a mental block that makes them think they can"t.**

For folks who are interested, here is a beginner"sAlgebra Tutorial

The formulas for the volume of a sphere, the volume of a cube,the volume of a cylinder, the volume of a rectangular prism. |

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### More Water and Gasoline Volume-to-Weight Examples

Depending on what unit of measurement you use, volume will equal cubic English or cubic Metric; examples being cubic inches or cubic centimeters.Side note: the tilde (~) is the mathematical symbol for approximate.English29 cubic inches equals ~1 pint, which equals ~1 pound.58 cubic inches equals ~2 pints, which equals ~1 quart, which equals ~1/4 of a gallon, which equals ~2 pounds.231 cubic inches equals ~4 quarts, which equals 1 gallon, which equals 8 pounds.MetricMost of the world uses metric. There is a reason for that. As an example, 1000 cubic centimeters equals one liter, 1000 grams equals one kilogram, etc.; all nice, neat, and tidy. The United States and others are trying to get with the program; metric is already included with English measurement on most U.S. consumer items. It"s only a matter of time.## How Much Does the Water Weigh in a Full Water Heater?– Water Tank Size Volume Formula and Answers –

Serendipitous energy.gov page on everything about water heaters, including how to buy one. |

### How to Calculate the Weight of the Water in a Home Water Heater

How much does the total amount of water in a water heater weigh, volume to weight conversion.From the above NASA chart we see the volume formula for a cylinder is V = (πd2h)/4**Water tank heaters come in all sizes. For the purposes of this example, we will say the water tank heater has a measured height of approximately 54 inches; what with this, that, and the other, the water part is probably around 48". The diameter measured as 18"; what with insulation, etc., 16 probably works.So,d = 16h = 48Thus (" * " meaning to multiply),V = (3.14 * 16 * 16 * 48) divided by 4.Since all numbers are inches, the answer will be in cubic inches. We reduce the formula as follows:V = (3.14 * 256 * 48) divided by 4.V = (3.14 * 12288)/4V = 38514/4V = 9646 cubic inches231 cubic inches is equal to a gallon, so we divide 9646 by 231.9646/231 = 41.76 gallons.What with the inner measurements being estimates, looks like it is a 40 gallon water heater.A gallon weighs 8 pounds.So multiplying 40 times 8 gives 320.A 40-gallon water heater contains 320 pounds of cold water.Knowing the volume and weight of a 40-gallon water tank heater makes it easy to extrapolate the volume and approximate weight of other water heaters. Do remember that as volume increases, the discrepancy totals of the "pints-a pound". designationversus the more accurate 1.043 lb. designationalso increases. As an example: multiplying the 320 lb. calculation for a 40 gallon water heater by 1.043 gives a result of 333.76 lb. at RT versus the original approximation of 320 lb. at RT. When the water temperature is at hot water heater level, the actual weight will fall between the 320 lb. calculation and the 333.76 lb. calculation.10 gallon water heater is 2310 cubic inches and the water weighs 80 pounds.20 gallon water heater is 4620 cubic inches and the water weighs 160 pounds.30 gallon water heater is 6930 cubic inches and the water weighs 240 pounds.40 gallon water heater is 9240 cubic inches and the water weighs 320 pounds.50 gallon water heater is 11550 cubic inches and the water weighs 400 pounds.80 gallon water heater is 18480 cubic inches and the water weighs 640 pounds.100 gallon water heater is 23100 cubic inches and the water weighs 800 pounds.Do keep in mind the temperature versus density considerations and the expansion of water when heated, i.e., a fully hot water heater tank weighs slightly less than a cold or warm water tank heater that"s been freshly refilled after usage. The difference between hot and cold water density versus volume is significant enough that most water heaters have a temperature pressure relief valve and a drainage tube or pipe to compensate for this.**

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