Gallon (US) to Cubic Kilometer Converter

Volume Converter

40 units available

Decimals:

From

To

3.785412e-12

1 gal = 3.785412e-12 km³

Formula:

km³ = gal × 3.785412e-12

With your value: 1 gal = 3.785412e-12 km³

How big is that?

Everyday references on a logarithmic scale, all expressed in gallon (us) so you can sanity-check the result.

Milk carton (1/3.8e+3 your value)0.000264 gal

Kitchen bucket (1/3.8e+2 your value)0.00264 gal

Car fuel tank (1/76 your value)0.0132 gal

Bathtub (1/19 your value)0.0528 gal

Hot tub (1/2.5 your value)0.396 gal

Your value1.00 gal

Other Gallon (US) to Cubic Kilometer conversions

2 gal to km³ 3 gal to km³ 4 gal to km³ 5 gal to km³ 6 gal to km³ 7 gal to km³ 8 gal to km³

Gallon (US) to Cubic Kilometer Conversion Table

Gallon (US) (gal)	Cubic Kilometer (km³)
0.5	1.892706e-12
1	3.785412e-12
2	7.570824e-12
5	1.892706e-11
10	3.785412e-11
15	5.678118e-11
20	7.570824e-11
25	9.463529e-11
50	1.892706e-10
100	3.785412e-10
250	9.463529e-10
500	1.892706e-9
1000	3.785412e-9

Cubic Kilometer to Gallon (US) Conversion Table

Cubic Kilometer (km³)	Gallon (US) (gal)
0.5	132,086,026,179.07422
1	264,172,052,358.14844
2	528,344,104,716.2969
5	1.320860e+12
10	2.641721e+12
15	3.962581e+12
20	5.283441e+12
25	6.604301e+12
50	1.320860e+13
100	2.641721e+13
250	6.604301e+13
500	1.320860e+14
1000	2.641721e+14

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Gallon (US) (gal)

Volume

Exact conversion

The US liquid gallon is exactly 231 cubic inches = 3.785 411 784 L.

Source: NIST Handbook 44, Specifications, Tolerances, and Other Technical Requirements for Weighing and Measuring Devices

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

Cubic Kilometer (km³)

Volume

Exact conversion

Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Gallon (US) to Cubic Kilometer

To convert from Gallon (US) (gal) to Cubic Kilometer (km³), multiply the value by 3.785412e-12.

Formula: km³ = gal × 3.785412e-12

Reverse: gal = km³ × 2.641721e+11

Step-by-Step Example

Start with your value in Gallon (US). For example: 5 gal
Multiply by the conversion factor: 5 x 3.785412e-12
The result is: 1.892706e-11 km³

About Gallon (US)

The US gallon equals approximately 3.785 liters and is the standard unit for fuel and large liquid volumes in the United States.

Fun Fact: The US gallon is about 20% smaller than the imperial (UK) gallon.

Common uses: fuel (US), beverages, swimming pools.

About Cubic Kilometer

The cubic kilometer (km³) is a unit of volume and capacity. One cubic kilometer equals 1.000000 × 10^+12 litres. UnitConvertLab converts it against every other volume unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: volume calculations, engineering and science, education.

Frequently Asked Questions

How many Cubic Kilometer are in 1 Gallon (US)?

There are exactly 3.785412e-12 Cubic Kilometer in 1 Gallon (US). This means the conversion factor from Gallon (US) to Cubic Kilometer is 3.785412e-12.

What is the formula to convert Gallon (US) to Cubic Kilometer?

The formula to convert Gallon (US) to Cubic Kilometer is: km³ = gal × 3.785412e-12. For example, to convert 10 Gallon (US) to Cubic Kilometer, you would multiply 10 by 3.785412e-12.

What is a Gallon (US)?