Authoritative definitions of the International System of Units and SI prefixes.
Dedicated unit pair
Pascals to Pounds per square inch
Convert Pa to psi instantly, then review the formula, assumptions, and rounding guidance.
Pressure & stressInstant result
Decimals
Formula result = input × 1 ÷ 6894.757293. 1 Pa = 0.0001 psi
Common examples
One value, several units
Kilopascals0.001 kPa
Megapascals0 MPa
Bar0 bar
Atmospheres0 atm
Pounds per square inch0.0001 psi
Millimetres of mercury0.0075 mmHg
Conversion table
| Pa | psi |
|---|---|
| 1 Pa | 0.0001 psi |
| 2 Pa | 0.0003 psi |
| 5 Pa | 0.0007 psi |
| 10 Pa | 0.0015 psi |
| 25 Pa | 0.0036 psi |
| 50 Pa | 0.0073 psi |
| 100 Pa | 0.0145 psi |
Conversion chart
1 Pa0.0001 psi
5 Pa0.0007 psi
10 Pa0.0015 psi
25 Pa0.0036 psi
50 Pa0.0073 psi
Worked example
Standard atmosphere is 101,325 pascals.
Unit definition
Pascals (Pa) One pascals equals 1 pascal.
Unit history
The pascal, named for Blaise Pascal, became the SI derived unit of pressure and equals one newton per square metre.
Step by step
1. Parse the value, including fractions.
2. Convert Pa to pascal.
3. Convert the base value to psi and apply your display precision.
Understand the result before using it
Pascals to Pounds per square inch converts a value measured in Pascals (Pa) into the equivalent value in Pounds per square inch (psi). The numerical value changes because the size and definition of the selected unit changes; the underlying quantity does not.
Calculated result
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.
Formula, assumptions, and example
Formula
result = input × 1 ÷ 6894.757293
Assumptions
- Pascals and Pounds per square inch represent the same pressure & stress quantity.
- The input is expressed in Pa; the output is expressed in psi.
- The unit definitions and conventional relationship shown on this page apply.
Worked example
1 Pa = 0.000145037737734 psi. For another value, apply the same relationship and round only to the precision your source measurement supports.
When to use it
Good uses
- Read a Pa measurement in a document that expects psi.
- Compare a pascals value with a value reported in pounds per square inch.
- Check the Pa-to-psi arithmetic before copying the result into another calculation.
Limitations
Common mistakes to avoid
- Do not confuse Pa with another unit that has a similar name or symbol.
- Round the output to a precision justified by the original measurement.
- Verify safety-critical, regulated, laboratory, and contractual conversions against the controlling standard.
Sources and further reading
These references explain the underlying standards or provide authoritative context. Your own contract, institution, clinician, product documentation, local code, or governing standard may be the controlling source.
Guidance on unit names, symbols, conversions, and numerical presentation.
Questions about this calculation
How do I convert Pascals to Pounds per square inch?
result = input × 1 ÷ 6894.757293 Using the displayed relationship, 1 Pa equals 0.000145037737734 psi.
How many Pounds per square inch are in one Pascals?
One Pascals is 0.000145037737734 Pounds per square inch. The displayed digits may be rounded.
Can I reverse the Pa to psi conversion?
Yes. Swap the source and target units in the converter. The reverse relationship converts psi back to Pa.
Is the Pascals to Pounds per square inch result exact?
The conversion follows the displayed unit relationship. Display rounding can hide additional digits, and measured inputs cannot become more accurate merely by changing units.