Convert KPa to Psi

1 kPa equals 0.145038 psi.

Formula: psi = kPa × 0.145038

KPa to Psi Converter

What Is a Kpa?

The kilopascal (kPa) is a metric pressure unit equal to 1,000 pascals. It is used in engineering, automotive specs, and weather systems worldwide.

What Is a Psi?

Pounds per square inch (psi) is the US pressure standard (≈ 6,894.76 Pa). Used for tires, hydraulics, and industrial applications.

Kpa to Psi Formula

The conversion formula is:

psi = kPa × 0.145038

Derived from: 1 kPa = 1,000 Pa, and 1 psi ≈ 6,894.76 Pa.

Worked Example

Convert 250 kPa (250 kPa (common tire spec)):

Calculate: 250 → 36.26 psi

Common Use Cases

This conversion appears frequently in:

Tire pressure (Australian and Asian vehicles): Australian and some Asian tire placard stickers show pressure in kPa. A recommendation of 220 kPa equals about 32 psi — essential knowledge for anyone using a US-made tire gauge on an imported vehicle.
Water pressure systems: Municipal water pressure is often specified in kPa in metric countries (typical range: 200–500 kPa). US plumbers and homeowners need the psi equivalent (29–72.5 psi) to compare with their local standards.
Industrial pressure testing: Hydrostatic test pressures and proof pressures for pipes, vessels, and fittings are specified in kPa in international standards (ISO, AS) but psi in ASME and US standards. A test at 1,500 kPa equals about 217.6 psi.
HVAC and refrigeration: Refrigerant pressures are commonly given in kPa in metric service manuals but psi in US manuals. Technicians working on imported equipment must convert reliably.

Frequently Asked Questions

How do I quickly estimate kPa to psi?

Divide by 7 for a quick estimate (accuracy within 1.5%). For example: 350 kPa ÷ 7 = 50 psi (exact: 50.76). For tire pressures, the common values are worth memorizing: 200 kPa = 29 psi, 220 kPa = 32 psi, 250 kPa = 36 psi, 280 kPa = 40.6 psi.

What is 100 kPa in psi?

100 kPa equals approximately 14.504 psi, which is very close to 1 bar (exactly 100 kPa) and nearly equal to standard atmospheric pressure (101.325 kPa = 14.696 psi). The value 100 kPa serves as a convenient anchor point for the conversion.

Is kPa the same as kilopascal?

Yes. kPa is the abbreviation for kilopascal, where "kilo" means 1,000. So 1 kPa = 1,000 Pa (pascals). The pascal is the SI unit of pressure (1 Pa = 1 N/m²), and kPa is the most practical SI-derived pressure unit for everyday engineering applications.

How does kPa relate to bar and atm?

1 bar = 100 kPa exactly. 1 atm = 101.325 kPa exactly. 1 psi = 6.89476 kPa. These three relationships let you convert between any common pressure units. For instance: 500 kPa = 5 bar = 4.935 atm = 72.5 psi.

Common KPa to Psi Conversions

KPa to Psi (Part 1)

KPa	Psi	Actions
10 kPa	1.45038 psi
50 kPa	7.25189 psi
100 kPa	14.5038 psi

KPa to Psi (Part 2)

KPa	Psi	Actions
200 kPa	29.0075 psi
500 kPa	72.5189 psi
1000 kPa	145.038 psi

KPa to psi Conversion Table

Reference table with common kpa to psi conversions. All values calculated with high precision.

KPa to Psi Table
0.001 to 5

KPa	Psi	Actions
0.001 kPa	0.000145038 psi
0.0025 kPa	0.000362594 psi
0.005 kPa	0.000725189 psi
0.01 kPa	0.00145038 psi
0.025 kPa	0.00362594 psi
0.05 kPa	0.00725189 psi
0.1 kPa	0.0145038 psi
14 kPa	0.0362594 psi
12 kPa	0.0725189 psi
1 kPa	0.145038 psi
2 12 kPa	0.362594 psi
5 kPa	0.725189 psi

KPa to Psi Table
10 to 1000000

KPa	Psi	Actions
10 kPa	1.45038 psi
25 kPa	3.62594 psi
50 kPa	7.25189 psi
100 kPa	14.5038 psi
250 kPa	36.2594 psi
500 kPa	72.5189 psi
1000 kPa	145.038 psi
2500 kPa	362.594 psi
5000 kPa	725.189 psi
10000 kPa	1450.38 psi
25000 kPa	3625.94 psi
50000 kPa	7251.89 psi
100000 kPa	14503.8 psi
250000 kPa	36259.4 psi
500000 kPa	72518.9 psi
1000000 kPa	145038 psi

Psi to KPa Table
0.0001 to 12

Psi	KPa	Actions
0.0001 psi	0.000689476 kPa
0.00025 psi	0.00172369 kPa
0.0005 psi	0.00344738 kPa
0.001 psi	0.00689476 kPa
0.0025 psi	0.0172369 kPa
0.005 psi	0.0344738 kPa
0.01 psi	0.0689476 kPa
0.025 psi	0.172369 kPa
0.05 psi	0.344738 kPa
0.1 psi	0.689476 kPa
14 psi	1.72369 kPa
12 psi	3.44738 kPa

Psi to KPa Table
1 to 100000

Psi	KPa	Actions
1 psi	6.89476 kPa
2 12 psi	17.2369 kPa
5 psi	34.4738 kPa
10 psi	68.9476 kPa
25 psi	172.369 kPa
50 psi	344.738 kPa
100 psi	689.476 kPa
250 psi	1723.69 kPa
500 psi	3447.38 kPa
1000 psi	6894.76 kPa
2500 psi	17236.9 kPa
5000 psi	34473.8 kPa
10000 psi	68947.6 kPa
25000 psi	172369 kPa
50000 psi	344738 kPa
100000 psi	689476 kPa

Looking for the reverse? Convert Psi to KPa

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Conversion factors verified against NIST, BIPM, ISO 80000-4 1 atm = 101 325 Pa by definition (BIPM). Last reviewed: March 2026

By Adilson Fernandes

Reviewed by Tiago Fernandes

All unit conversions on CoolConversion use conversion factors defined or documented by internationally recognised standards bodies (such as ISO and NIST), including both SI and non-SI units.