Convert Pascal to PSI
Convert Pascals to PSI (pounds per square inch) for tires, hydraulics, compressors, and industrial specs using the exact Pa-to-psi factor.
How to Convert Pascal to Psi
To convert Pascal to PSI, divide Pascals by 6,894.76 because 1 psi equals 6,894.76 Pa.
Conversion Formula:
value / 6894.76Understanding the Conversion
Pascal to PSI is essential whenever metric sensor outputs must be reported in Imperial units. PSI is widely used for automotive tires, hydraulic systems, compressors, and many U.S. industrial specifications. Because 1 psi equals 6,894.76 Pa, you divide Pascals by 6,894.76 to obtain PSI. This factor is exact and based on the pound-force over one square inch.
Use this conversion to align SI-based readings (Pa) from transducers or datasheets with tools and gauges that read PSI. For example, 220,000 Pa is about 31.9 psi, a common car tire setting. Medium hydraulic lines might run in the thousands of kPa or hundreds of psi, while low-pressure HVAC or cleanroom readings may remain well below 1 psi.
When sharing numbers with teams that mix units, include both Pa (or kPa) and psi to avoid confusion. The relationship is linear and reversible—multiplying psi by 6,894.76 returns Pascals—so you can maintain precision in calculations while presenting in the audience’s preferred unit.
Conversion Examples
Example: Convert 220,000 Pa to PSI
- Step 1: Divide 220,000 by 6,894.76.
- Step 2: 220,000 ÷ 6,894.76 ≈ 31.9.
- Step 3: Result is about 31.9 psi.
220,000 Pa ≈ 31.9 psi
Typical passenger car tire pressure range.
Example: Convert 101,325 Pa to PSI
- Step 1: 101,325 ÷ 6,894.76 ≈ 14.6959.
- Step 2: Result is about 14.7 psi.
- Step 3: Matches sea-level atmospheric pressure.
101,325 Pa ≈ 14.7 psi
Standard atmosphere reference in PSI.
Example: Convert 50,000 Pa to PSI
- Step 1: 50,000 ÷ 6,894.76 ≈ 7.25.
- Step 2: Result is about 7.25 psi.
- Step 3: Useful for low-pressure pneumatic tests.
50,000 Pa ≈ 7.25 psi
Shows lower-range pressures in PSI terms.
Conversion Formula
PSI is defined in Imperial units; converting from Pascals divides by 6,894.76 to account for pound-force and square-inch scaling.
Conversion Chart
| Pascal | Psi |
|---|---|
| 10000 | 1.45 |
| 25000 | 3.63 |
| 50000 | 7.25 |
| 75000 | 10.88 |
| 100000 | 14.5 |
| 150000 | 21.76 |
| 200000 | 29 |
| 220000 | 31.9 |
| 300000 | 43.5 |
| 500000 | 72.5 |
Quick Conversion Tip
Divide Pa by ~6,900 for a quick psi estimate; use 6,894.76 for precise results.
Unit Definitions
Pascal (Pa)
SI pressure unit equal to one newton per square meter.
1 psi = 6,894.76 Pa; 1 kPa = 1,000 Pa; 1 bar = 100,000 Pa.
Pound per Square Inch (psi)
Imperial pressure unit based on pounds-force over one square inch, common in North America.
psi to Pa multiply by 6,894.76; psi to kPa multiply by 6.89476; psi to bar multiply by 0.0689476.
Common Use Cases
- Automotive: convert tire or TPMS readings from Pa/kPa sensors to PSI.
- Hydraulics: map SI-rated transducer outputs to PSI for U.S. specs.
- Compressors: translate metric gauges to PSI for tool compatibility.
- HVAC/cleanroom: communicate low pressures to teams using PSI.
- Industrial QA: present SI measurements in PSI for mixed-unit stakeholders.
- Education: illustrate SI-to-Imperial pressure scaling.
Frequently Asked Questions
Is 6,894.76 exact?
It is the standard precise factor. For quick estimates you might use 6,900, but the calculator applies the exact value.
Why use PSI?
PSI is common in North America for tires, hydraulics, and many industrial tools and gauges.
Can I reverse the conversion?
Yes. Multiply psi by 6,894.76 to get Pascals; the relationship is linear and reversible.