Pound/Cubic Inch to Pound/Cubic Foot Converter

Density Converter

16 units available

Decimals:

From

To

1,728

1 lb/in³ = 1,728 lb/ft³

Formula:

lb/ft³ = lb/in³ × 1,727.9999999955

With your value: 1 lb/in³ = 1,728 lb/ft³

Other Pound/Cubic Inch to Pound/Cubic Foot conversions

2 lb/in³ to lb/ft³ 3 lb/in³ to lb/ft³ 4 lb/in³ to lb/ft³ 5 lb/in³ to lb/ft³ 6 lb/in³ to lb/ft³ 7 lb/in³ to lb/ft³ 8 lb/in³ to lb/ft³

Pound/Cubic Inch to Pound/Cubic Foot Conversion Table

Pound/Cubic Inch (lb/in³)	Pound/Cubic Foot (lb/ft³)
0.5	864
1	1,728
2	3,456
5	8,640
10	17,280
15	25,920
20	34,560
25	43,200
50	86,400
100	172,800
250	431,999.999999
500	863,999.999998
1000	1,727,999.999996

Pound/Cubic Foot to Pound/Cubic Inch Conversion Table

Pound/Cubic Foot (lb/ft³)	Pound/Cubic Inch (lb/in³)
0.5	0.000289
1	0.000579
2	0.001157
5	0.002894
10	0.005787
15	0.008681
20	0.011574
25	0.014468
50	0.028935
100	0.05787
250	0.144676
500	0.289352
1000	0.578704

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.

Pound/Cubic Inch (lb/in³)

Density

Exact conversion

Derived from mass per unit volume using the definitions above.

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

Pound/Cubic Foot (lb/ft³)

Density

Exact conversion

Derived from mass per unit volume using the definitions above.

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 Pound/Cubic Inch to Pound/Cubic Foot

To convert from Pound/Cubic Inch (lb/in³) to Pound/Cubic Foot (lb/ft³), multiply the value by 1,727.9999999955.

Formula: lb/ft³ = lb/in³ × 1,727.9999999955

Reverse: lb/in³ = lb/ft³ × 0.0005787037

Step-by-Step Example

Start with your value in Pound/Cubic Inch. For example: 5 lb/in³
Multiply by the conversion factor: 5 x 1,727.9999999955
The result is: 8,640 lb/ft³

About Pound/Cubic Inch

The pound/cubic inch (lb/in³) is a unit of density. One pound/cubic inch equals 27679.90471 kilogram per cubic metres. UnitConvertLab converts it against every other density unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

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

About Pound/Cubic Foot

The pound/cubic foot (lb/ft³) is a unit of density. One pound/cubic foot equals 16.01846337 kilogram per cubic metres. UnitConvertLab converts it against every other density unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

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

Frequently Asked Questions

How many Pound/Cubic Foot are in 1 Pound/Cubic Inch?

There are exactly 1,727.9999999955 Pound/Cubic Foot in 1 Pound/Cubic Inch. This means the conversion factor from Pound/Cubic Inch to Pound/Cubic Foot is 1,727.9999999955.

What is the formula to convert Pound/Cubic Inch to Pound/Cubic Foot?

The formula to convert Pound/Cubic Inch to Pound/Cubic Foot is: lb/ft³ = lb/in³ × 1,727.9999999955. For example, to convert 10 Pound/Cubic Inch to Pound/Cubic Foot, you would multiply 10 by 1,727.9999999955.

What is a Pound/Cubic Inch?