kPa to PSI (Kilopascals to PSI) – 1 kPa = 0.14504 psi

	250,000 Pa
	2,500 hPa
	0.25 MPa
	2.5 bar
	36.25943443 psi
	2.467308167 atm
	1,875.15394 mmHg
	73.82495041 inHg
	2.549290532 kgf/cm²
	1,875.154207 Torr

250,000 Pa

2,500 hPa

0.25 MPa

2.5 bar

36.25943443 psi

2.467308167 atm

1,875.15394 mmHg

73.82495041 inHg

2.549290532 kgf/cm²

1,875.154207 Torr

How to convert kilopascals to psi

Start from the exact relation: 1 kPa = 0.1450377377 psi

Put your value into the formula: psi = kPa × 0.1450377

Round to the precision you need. The tables on this page show 2 to 3 decimals.

Worked examples

250 × 0.1450377 = 36.26 psi

100 × 0.1450377 = 14.5 psi

Mental-math shortcut

Use kPa × 0.145. For 250 kPa that gives about 36.25 psi instead of 36.26 psi (0.026% too low).

Definition and source: 1 psi = 6,894.757 Pa = 6.894757 kPa (one pound-force per square inch); 1 bar = 100 kPa exactly, so 1 bar = 14.5038 psi. Source: NIST SP 811 (2008), Guide for the Use of the SI, Appendix B (checked 2026-10-12).

kPa to psi table

kPa	psi	bar
100 kPa	14.5 psi	1 bar
150 kPa	21.76 psi	1.5 bar
180 kPa	26.11 psi	1.8 bar
190 kPa	27.56 psi	1.9 bar
200 kPa	29.01 psi	2 bar
210 kPa	30.46 psi	2.1 bar
220 kPa	31.91 psi	2.2 bar
230 kPa	33.36 psi	2.3 bar
240 kPa	34.81 psi	2.4 bar
250 kPa	36.26 psi	2.5 bar
260 kPa	37.71 psi	2.6 bar
280 kPa	40.61 psi	2.8 bar
300 kPa	43.51 psi	3 bar
350 kPa	50.76 psi	3.5 bar
400 kPa	58.02 psi	4 bar

psi	kPa
10 psi	68.95 kPa
20 psi	137.9 kPa
25 psi	172.37 kPa
30 psi	206.84 kPa
32 psi	220.63 kPa
33 psi	227.53 kPa
34 psi	234.42 kPa
35 psi	241.32 kPa
36 psi	248.21 kPa
38 psi	262 kPa
40 psi	275.79 kPa
50 psi	344.74 kPa

psi

kPa

10 psi

68.95 kPa

20 psi

137.9 kPa

25 psi

172.37 kPa

30 psi

206.84 kPa

32 psi

220.63 kPa

33 psi

227.53 kPa

34 psi

234.42 kPa

35 psi

241.32 kPa

36 psi

248.21 kPa

38 psi

262 kPa

40 psi

275.79 kPa

50 psi

344.74 kPa

About these units

kilopascal (kPa)

A kilopascal (kPa) is 1,000 pascals. Tire placards in many countries list the recommended pressure in kPa alongside psi.

psi (pound per square inch) (psi)

Pounds per square inch (psi) is a US pressure unit, about 6.895 kPa, commonly used for tire pressure.

FAQ

What is 250 kilopascals in psi?

250 kilopascals = 36.26 psi. Multiply the value in kPa by 0.1450377.

What is 30 psi in kilopascals?

30 psi = 206.84 kilopascals.

How do I convert kilopascals to psi in my head?

Use kPa × 0.145. For 250 kPa that gives about 36.25 psi instead of 36.26 psi (0.026% too low).

What is 250 kPa in psi and bar?

250 kPa = 36.3 psi = 2.5 bar = 2.55 kgf/cm².

Kilopascals to PSI