kPa to PSI

Kilopascals (kPa) to pounds per square inch (psi).

Value

Convert to

31.9083psi

Precision (significant figures)

Formula

psi = kPa × 0.145038

1 kPa = 0.145038 psi

psi = kPa × 0.145038. So a 220 kPa tire is 31.9083 psi, a 250 kPa tire is 36.2594 psi and 100 kPa is 14.5038 psi. Canada, Australia and Japan print tire pressures in kPa.

Formula

Worked example

Start with 220 kPa.
Multiply by 0.145038 (psi per kPa): 220 × 0.145038 = 31.9083 psi.

Kpa to psi chart

Kilopascals (kPa)	Pounds per square inch (psi)
10	1.45038
50	7.25189
100	14.5038
101.325	14.6959
150	21.7557
180	26.1068
200	29.0075
210	30.4579
220	31.9083
230	33.3587
240	34.8091
250	36.2594
300	43.5113
500	72.5189
700	101.526
1,000	145.038

Explained in detail: 101.3 kPa to psi.

When you need this conversion

Tire placards in Canada, Australia and Japan, engineering specs in SI units, and gauges with a kPa scale.

Quick reference

100 kPa = 14.5038 psi
200 kPa = 29.0075 psi
220 kPa = 31.9083 psi
250 kPa = 36.2594 psi
1,000 kPa = 145.038 psi

Rule of thumb

Divide kPa by 7 for psi: 210 kPa gives 30 psi (exact: 30.46). Divide kPa by 100 for bar.

Common mistakes

Confusing kPa and hPa. Weather pressure of 1,013 hPa is 101.3 kPa.

Mixing gauge and absolute. Tire pressures are gauge values. Engineering specs sometimes list kPa absolute, which includes about 101.3 kPa of atmosphere.

For the reverse, use psi to kPa.

Questions

How many psi is 220 kPa?

31.9083 psi.

How many psi is 250 kPa?

36.2594 psi.

How many kPa is one bar?

100 kPa.

How many psi is 1,000 kPa?

145.038 psi (1 MPa).

Sources

Last reviewed 2026-09-24. How we check values · Report a problem with this page