Pound/sq foot to Kilopound/sq inch Converter

Pressure Converter

29 units available

Decimals:

From

To

6.944444e-6

1 psf = 6.944444e-6 ksi

Formula:

ksi = psf × 0.0000069444

With your value: 1 psf = 6.944444e-6 ksi

Other Pound/sq foot to Kilopound/sq inch conversions

2 psf to ksi 3 psf to ksi 4 psf to ksi 5 psf to ksi 6 psf to ksi 7 psf to ksi 8 psf to ksi

Pound/sq foot to Kilopound/sq inch Conversion Table

Pound/sq foot (psf)	Kilopound/sq inch (ksi)
0.5	3.472222e-6
1	6.944444e-6
2	1.388889e-5
5	3.472222e-5
10	6.944444e-5
15	0.000104
20	0.000139
25	0.000174
50	0.000347
100	0.000694
250	0.001736
500	0.003472
1000	0.006944

Kilopound/sq inch to Pound/sq foot Conversion Table

Kilopound/sq inch (ksi)	Pound/sq foot (psf)
0.5	72,000
1	144,000
2	288,000
5	720,000
10	1,440,000
15	2,160,000
20	2,880,000
25	3,600,000
50	7,200,000
100	14,399,999.999999
250	35,999,999.999999
500	71,999,999.999998
1000	143,999,999.999995

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/sq foot (psf)

Pressure

Exact conversion

Derived from the pascal (1 Pa = 1 N/m²). The standard atmosphere is exactly 101 325 Pa.

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

Kilopound/sq inch (ksi)

Pressure

Exact conversion

Derived from the pascal (1 Pa = 1 N/m²). The standard atmosphere is exactly 101 325 Pa.

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/sq foot to Kilopound/sq inch

To convert from Pound/sq foot (psf) to Kilopound/sq inch (ksi), multiply the value by 6.944444e-6.

Formula: ksi = psf × 0.0000069444

Reverse: psf = ksi × 143,999.999999995

Step-by-Step Example

Start with your value in Pound/sq foot. For example: 5 psf
Multiply by the conversion factor: 5 x 6.944444e-6
The result is: 3.472222e-5 ksi

About Pound/sq foot

The pound/sq foot (psf) is a unit of pressure and stress. One pound/sq foot equals 47.88025898 pascals. UnitConvertLab converts it against every other pressure unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

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

About Kilopound/sq inch

The kilopound/sq inch (ksi) is a unit of pressure and stress. One kilopound/sq inch equals 6.894757 × 10^+6 pascals. UnitConvertLab converts it against every other pressure unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

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

Frequently Asked Questions

How many Kilopound/sq inch are in 1 Pound/sq foot?

There are exactly 6.944444e-6 Kilopound/sq inch in 1 Pound/sq foot. This means the conversion factor from Pound/sq foot to Kilopound/sq inch is 6.944444e-6.

What is the formula to convert Pound/sq foot to Kilopound/sq inch?

The formula to convert Pound/sq foot to Kilopound/sq inch is: ksi = psf × 0.0000069444. For example, to convert 10 Pound/sq foot to Kilopound/sq inch, you would multiply 10 by 6.944444e-6.

What is a Pound/sq foot?