Cubic Foot to Cubic Kilometer Converter

Volume Converter

40 units available

Decimals:

From

To

2.831685e-11

1 ft³ = 2.831685e-11 km³

Formula:

km³ = ft³ × 2.831685e-11

With your value: 1 ft³ = 2.831685e-11 km³

How big is that?

Everyday references on a logarithmic scale, all expressed in cubic foot so you can sanity-check the result.

Milk carton (1/2.8e+4 your value)0.0000353 ft³

Kitchen bucket (1/2.8e+3 your value)0.000353 ft³

Car fuel tank (1/5.7e+2 your value)0.00177 ft³

Bathtub (1/1.4e+2 your value)0.00706 ft³

Hot tub (1/19 your value)0.0530 ft³

Your value1.00 ft³

Other Cubic Foot to Cubic Kilometer conversions

2 ft³ to km³ 3 ft³ to km³ 4 ft³ to km³ 5 ft³ to km³ 6 ft³ to km³ 7 ft³ to km³ 8 ft³ to km³

Cubic Foot to Cubic Kilometer Conversion Table

Cubic Foot (ft³)	Cubic Kilometer (km³)
0.5	1.415842e-11
1	2.831685e-11
2	5.663369e-11
5	1.415842e-10
10	2.831685e-10
15	4.247527e-10
20	5.663369e-10
25	7.079212e-10
50	1.415842e-9
100	2.831685e-9
250	7.079212e-9
500	1.415842e-8
1000	2.831685e-8

Cubic Kilometer to Cubic Foot Conversion Table

Cubic Kilometer (km³)	Cubic Foot (ft³)
0.5	17,657,333,360.744293
1	35,314,666,721.48859
2	70,629,333,442.97717
5	176,573,333,607.44293
10	353,146,667,214.88586
15	529,720,000,822.32886
20	706,293,334,429.7717
25	882,866,668,037.2147
50	1.765733e+12
100	3.531467e+12
250	8.828667e+12
500	1.765733e+13
1000	3.531467e+13

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.

Cubic Foot (ft³)

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

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 Cubic Foot to Cubic Kilometer

To convert from Cubic Foot (ft³) to Cubic Kilometer (km³), multiply the value by 2.831685e-11.

Formula: km³ = ft³ × 2.831685e-11

Reverse: ft³ = km³ × 3.531467e+10

Step-by-Step Example

Start with your value in Cubic Foot. For example: 5 ft³
Multiply by the conversion factor: 5 x 2.831685e-11
The result is: 1.415842e-10 km³

About Cubic Foot

The cubic foot equals about 28.3168 litres and is the standard unit for appliance capacity and gas metering in the US.

Common uses: refrigerator capacity, natural gas billing, shipping volume.

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 Cubic Foot?

There are exactly 2.831685e-11 Cubic Kilometer in 1 Cubic Foot. This means the conversion factor from Cubic Foot to Cubic Kilometer is 2.831685e-11.

What is the formula to convert Cubic Foot to Cubic Kilometer?

The formula to convert Cubic Foot to Cubic Kilometer is: km³ = ft³ × 2.831685e-11. For example, to convert 10 Cubic Foot to Cubic Kilometer, you would multiply 10 by 2.831685e-11.

What is a Cubic Foot?