PSI to ksi Converter

How to convert pounds per square inch to kilopounds per square inch

Formulaksi = psi × 0.001

Multiply the value in pounds per square inch by 0.001. To go the other way, multiply by 1,000 (or divide by 0.001).

A pound per square inch is smaller than a kilopound per square inch: it takes 1,000 pounds per square inch to make one kilopound per square inch.

Worked examples

1 pound per square inch1 psi × 0.001 = 0.001 ksi
5 pounds per square inch5 psi × 0.001 = 0.005 ksi
10 pounds per square inch10 psi × 0.001 = 0.01 ksi
20 pounds per square inch20 psi × 0.001 = 0.02 ksi
100 pounds per square inch100 psi × 0.001 = 0.1 ksi

Pounds per square inch to kilopounds per square inch conversion table

Values are calculated by the conversion engine and rounded to 8 significant figures.

Pounds per square inch to kilopounds per square inch: 0.1–10 psi
Pounds per square inch (psi)	Kilopounds per square inch (ksi)
0.1 psi	0.0001 ksi
0.25 psi	0.00025 ksi
0.5 psi	0.0005 ksi
1 psi	0.001 ksi
2 psi	0.002 ksi
3 psi	0.003 ksi
4 psi	0.004 ksi
5 psi	0.005 ksi
6 psi	0.006 ksi
7 psi	0.007 ksi
8 psi	0.008 ksi
9 psi	0.009 ksi
10 psi	0.01 ksi

Pounds per square inch to kilopounds per square inch: 12–1,000 psi
Pounds per square inch (psi)	Kilopounds per square inch (ksi)
12 psi	0.012 ksi
15 psi	0.015 ksi
20 psi	0.02 ksi
25 psi	0.025 ksi
30 psi	0.03 ksi
40 psi	0.04 ksi
50 psi	0.05 ksi
75 psi	0.075 ksi
100 psi	0.1 ksi
250 psi	0.25 ksi
500 psi	0.5 ksi
1,000 psi	1 ksi

About the units

Pound per square inch (psi)

One pound-force per square inch, about 6,894.76 Pa. US tire, air-compressor and hydraulic pressures are given in psi. One pound per square inch equals 6,894.757293 pascals (Pa).

Kilopound per square inch (ksi)

The kilopound per square inch (ksi) is a unit of pressure in the US customary system. One kilopound per square inch equals 6,894,757.293 pascals (Pa).

Frequently asked questions

How many kilopounds per square inch are in one pound per square inch?

There are 0.001 kilopounds per square inch in one pound per square inch, and this value is exact by definition.

How do I convert pounds per square inch to kilopounds per square inch?

Multiply the number of pounds per square inch by 0.001. For example, 10 psi × 0.001 = 0.01 ksi.

How many pounds per square inch are in one kilopound per square inch?

One kilopound per square inch equals 1,000 pounds per square inch. That is the reverse factor, 1 ÷ 0.001.

What is 10 pounds per square inch in kilopounds per square inch?

10 psi = 0.01 ksi.

Is this psi to ksi converter accurate?

Yes. Both units are defined exactly in terms of SI units, so the conversion factor is exact; results are shown to 12 significant figures by default and you can change precision in the converter. Calculations run in your browser using the same tested engine that generated this page.