Gallon (gal) Volume Conversion Calculator

Enter a value in gallons below to convert to another unit of volume.

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Do you want to convert gallons to liters?

What Is a Gallon?

Joe Sexton

Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.

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Cite As:

Sexton, J. (n.d.). Gallon Conversion Calculator. Inch Calculator. Retrieved August 7, 2024, from https://www.inchcalculator.com/convert/from-gallon/

A gallon is a unit used to measure volume.

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.

Background and Origin

The gallon was originally used as the unit of fluid volume for measuring wine and ale in England.The gallon measurement used for wine was slightly different than that used for ale, and is equivalent to the US liquid gallon measurement in use today.This is the reason that sometimes the US liquid gallon is referred to as the wine gallon.

You might also be interested in our volume calculator.

How Much Is a Gallon?

The 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.

How Much Does a Gallon Weigh?

Since the gallon is a volumetric unit of measure, its weight will vary depending on the density of its contents.For instance, one gallon of water weighs 8.345 pounds, while one gallon of milk weighs 8.6 pounds.

How to Convert Gallons

To convert gallons to another unit of volume, you need to multiply the value by a conversion factor.A conversion factor is a numerical value used to change the units of a measurement without changing the value.^[2]

You can find the conversion factors for gallons in the conversion table below.

Then, multiply the volume measurement by the conversion factor to find the equivalent value in the desired unit of measurement.

gallons × conversion factor = result

You can also use a calculator, such as one of the converters below, for the conversion.

Gallon Conversion Table

Common gallon values and equivalent imperial and metric volume measurements
gallons	quarts	pints	cups	fluid ounces	tablespoons	teaspoons	cubic inches	cubic feet	cubic yards	liters	milliliters	cubic centimeters	cubic meters
1 gal	4 qt	8 pt	16 c	128 fl oz	256 tbsp	768 tsp	231 in³	0.133681 ft³	0.004951 yd³	3.785412 L	3,785 mL	3,785 cm³	0.003785 m³
2 gal	8 qt	16 pt	32 c	256 fl oz	512 tbsp	1,536 tsp	462 in³	0.267361 ft³	0.009902 yd³	7.570824 L	7,571 mL	7,571 cm³	0.007571 m³
3 gal	12 qt	24 pt	48 c	384 fl oz	768 tbsp	2,304 tsp	693 in³	0.401042 ft³	0.014853 yd³	11.356235 L	11,356 mL	11,356 cm³	0.011356 m³
4 gal	16 qt	32 pt	64 c	512 fl oz	1,024 tbsp	3,072 tsp	924 in³	0.534722 ft³	0.019805 yd³	15.141647 L	15,142 mL	15,142 cm³	0.015142 m³
5 gal	20 qt	40 pt	80 c	640 fl oz	1,280 tbsp	3,840 tsp	1,155 in³	0.668403 ft³	0.024756 yd³	18.927059 L	18,927 mL	18,927 cm³	0.018927 m³
6 gal	24 qt	48 pt	96 c	768 fl oz	1,536 tbsp	4,608 tsp	1,386 in³	0.802083 ft³	0.029707 yd³	22.712471 L	22,712 mL	22,712 cm³	0.022712 m³
7 gal	28 qt	56 pt	112 c	896 fl oz	1,792 tbsp	5,376 tsp	1,617 in³	0.935764 ft³	0.034658 yd³	26.497882 L	26,498 mL	26,498 cm³	0.026498 m³
8 gal	32 qt	64 pt	128 c	1,024 fl oz	2,048 tbsp	6,144 tsp	1,848 in³	1.069444 ft³	0.039609 yd³	30.283294 L	30,283 mL	30,283 cm³	0.030283 m³
9 gal	36 qt	72 pt	144 c	1,152 fl oz	2,304 tbsp	6,912 tsp	2,079 in³	1.203125 ft³	0.04456 yd³	34.068706 L	34,069 mL	34,069 cm³	0.034069 m³
10 gal	40 qt	80 pt	160 c	1,280 fl oz	2,560 tbsp	7,680 tsp	2,310 in³	1.336806 ft³	0.049511 yd³	37.854118 L	37,854 mL	37,854 cm³	0.037854 m³
11 gal	44 qt	88 pt	176 c	1,408 fl oz	2,816 tbsp	8,448 tsp	2,541 in³	1.470486 ft³	0.054462 yd³	41.63953 L	41,640 mL	41,640 cm³	0.04164 m³
12 gal	48 qt	96 pt	192 c	1,536 fl oz	3,072 tbsp	9,216 tsp	2,772 in³	1.604167 ft³	0.059414 yd³	45.424941 L	45,425 mL	45,425 cm³	0.045425 m³
13 gal	52 qt	104 pt	208 c	1,664 fl oz	3,328 tbsp	9,984 tsp	3,003 in³	1.737847 ft³	0.064365 yd³	49.210353 L	49,210 mL	49,210 cm³	0.04921 m³
14 gal	56 qt	112 pt	224 c	1,792 fl oz	3,584 tbsp	10,752 tsp	3,234 in³	1.871528 ft³	0.069316 yd³	52.995765 L	52,996 mL	52,996 cm³	0.052996 m³
15 gal	60 qt	120 pt	240 c	1,920 fl oz	3,840 tbsp	11,520 tsp	3,465 in³	2.005208 ft³	0.074267 yd³	56.781177 L	56,781 mL	56,781 cm³	0.056781 m³
16 gal	64 qt	128 pt	256 c	2,048 fl oz	4,096 tbsp	12,288 tsp	3,696 in³	2.138889 ft³	0.079218 yd³	60.566589 L	60,567 mL	60,567 cm³	0.060567 m³
17 gal	68 qt	136 pt	272 c	2,176 fl oz	4,352 tbsp	13,056 tsp	3,927 in³	2.272569 ft³	0.084169 yd³	64.352 L	64,352 mL	64,352 cm³	0.064352 m³
18 gal	72 qt	144 pt	288 c	2,304 fl oz	4,608 tbsp	13,824 tsp	4,158 in³	2.40625 ft³	0.08912 yd³	68.137412 L	68,137 mL	68,137 cm³	0.068137 m³
19 gal	76 qt	152 pt	304 c	2,432 fl oz	4,864 tbsp	14,592 tsp	4,389 in³	2.539931 ft³	0.094072 yd³	71.922824 L	71,923 mL	71,923 cm³	0.071923 m³
20 gal	80 qt	160 pt	320 c	2,560 fl oz	5,120 tbsp	15,360 tsp	4,620 in³	2.673611 ft³	0.099023 yd³	75.708236 L	75,708 mL	75,708 cm³	0.075708 m³

Gallon Conversion Calculators

You can also convert volume using one of our gallon converters below.

US Liquid

gallons to quarts converterRight Arrow Icon
gallons to pints converterRight Arrow Icon
gallons to fluid ounces converterRight Arrow Icon

US Cooking

gallons to cups converterRight Arrow Icon
gallons to tablespoons converterRight Arrow Icon
gallons to teaspoons converterRight Arrow Icon

US Customary Volume

gallons to cubic inches converterRight Arrow Icon
gallons to cubic feet converterRight Arrow Icon
gallons to cubic yards converterRight Arrow Icon

Metric Volume

gallons to liters converterRight Arrow Icon
gallons to milliliters converterRight Arrow Icon
gallons to cubic centimeters converterRight Arrow Icon
gallons to cubic meters converterRight Arrow Icon

Weight

gallons to ounces conversionRight Arrow Icon
gallons to pounds conversionRight Arrow Icon
gallons to milligrams conversionRight Arrow Icon
gallons to grams conversionRight Arrow Icon
gallons to kilograms conversionRight Arrow Icon

You might be interested in our other measurement calculators.

References

National Institute of Standards and Technology, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices, Handbook 44 - 2019 Edition, https://nvlpubs.nist.gov/nistpubs/hb/2019/NIST.HB.44-2019.pdf
National Institute of Standards & Technology, Unit Conversion, https://www.nist.gov/pml/owm/metric-si/unit-conversion

Other Volume Units

US Liquid

quart conversions
pint conversions
fluid ounce conversions

US Cooking

cup conversions
tablespoon conversions
teaspoon conversions

US Customary Volume

cubic inch conversions
cubic foot conversions
cubic yard conversions

Metric Volume

liter conversions
milliliter conversions
cubic centimeter conversions
cubic meter conversions

Gallon (gal) Volume Conversion Calculator - Inch Calculator (2024)

FAQs

How to calculate volume in gallons from inches? ›

To convert a measurement in cubic inches to a measurement in gallons, divide the volume by the following conversion ratio: 231 cubic inches/gallon. The volume in gallons is equal to the volume in cubic inches divided by 231.

Learn More ›

How do you calculate gallons in a tank using inches? ›

If you're in the USA:
measure the lengths of all 3 sides.
A little-known fact is 1 gallon = 231 cubic inches.
V = LxW×H (1 gal/231 cubic inches)
For example: my tank is 24 in × 14 in × 12 in.
V = 24 in × 14 in × 12 in = 4,032 cuin.
V = 4,032 cuin (1 gal/231 cuin) = 17.5 gallon.

Jun 3, 2017

Read On ›

How many inches of water are in a gallon? ›

The US liquid gallon (frequently called simply "gallon") is legally defined as 231 cubic inches, which is exactly 3.785411784 litres. A US liquid gallon can contain about 3.785 kilograms or 8.34 pounds of water at 3.98 °C (39.16 °F), and is about 16.7% less than the imperial gallon.

Discover More Details ›

What is the area of a gallon of water in inches? ›

* A gallon is 231 cubic inches. * A square foot is 12*12 square inches, or 144 square inches.

Find Out More ›

Can you calculate volume in inches? ›

Measure the object's length, width, and depth in inches. Then, multiply the length, width, and depth together to find the object's volume in cubic inches. For instance, say the object is 50 in long, 25 in wide, and 20 in deep. 50 x 25 x 20 = 25,000, so the object's volume is 25,000 cubic inches.

Learn More ›

How do you convert gallons of water to inches of water? ›

To convert a measurement in gallons to a measurement in cubic inches, multiply the volume by the following conversion ratio: 231 cubic inches/gallon. The volume in cubic inches is equal to the volume in gallons multiplied by 231.

How to calculate gallon volume? ›

Formula:

Formula:
L x W x D. = Cubic Feet.
Cubic ft x 7.47. = Gallons.

Show Me More ›

How do you convert tank size to gallons? ›

Divide the tank's volume in cubic inches by 231 to convert to gallons.

Keep Reading ›

How to calculate tank volume? ›

Let length be L, Breadth be B, and Height be H. So, if we take: L = 8ft B = 6 ft D/H = 5 ft Then the volume of the tank will be 8 x 6 x 5 = 240 ft³ We all know that 1ft³ is equivalent to 28.31 liter Therefore, the total volume of tank in liters will be 240 x 28.31 = 6794.4 liter.

Find Out More ›

How long is a gallon in inches? ›

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.

Learn More Now ›

How to convert inches of rain to gallons? ›

Here is an easy formula:

Measure the square footage of the collection area (for example a roof that is 30 feet wide x 50 feet long = 1500 ft²)
Multiply the area by the amount of rain in inches.
Multiply that number by 0.623 (that is the quantity of water in gallons one inch deep in one square foot of space)

Tell Me More ›

How many gallons of water does it take to make an inch of water? ›

To begin, . 62 gallons of water make up 1 inch in a square foot.