How do I convert Pa to psi?

Use the formula shown above or enter a value to see Pa converted to psi instantly.

What is the formula for Pa to psi?

The converter calculates psi by applying the category-specific conversion factor for Pressure.

When should I use Pa vs psi?

Pa and psi are both part of the Pressure category; pick the unit that matches your measurement context (e.g., scale, region, or industry standard).

Pressure Conversion Cheat Sheet

Convert Pa to psi

Use the live converter below to translate between Pascal (Pa) and Pound per square inch (psi). Scroll further for quick examples, formula tips, and related units.

Formula insight: Most unit conversions use a simple multiplication or division by a conversion factor. The calculator shows the exact formula used.

Convert

Pa → psi

Pascal

Pound per square inch

0.0001

psi

Rounded result (4 decimals max)

Formula

1 Pa = 0.0001 psi

Conversion sourcesTap or click to view references

The International System of Units (SI) — NIST Special Publication 330
National Institute of Standards and Technology (NIST). The SI Brochure (SP 330) is the definitive English edition of the BIPM SI tables. NIST’s edition lists the official constants and conversion factors tying inch-pound units to SI, which SwapUnits applies for length, mass, temperature, pressure, volume, and related conversions. See /standards/nist-si-tenfold for the complete decimal multiple/submultiple table. View source · View SI table

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Pa to psi quick table

Multiply any row by the same factor to scale results. Use the converter above to enter exact values with your own units.

Pascal (Pa)	Pound per square inch (psi)
0.25 Pa	0 psi
0.5 Pa	0.0001 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
100 Pa	0.0145 psi

psi back to Pa

Keep the reciprocal handy when double-checking calculations or undoing a conversion.

Pound per square inch (psi)	Pascal (Pa)
0.25 psi	1,723.6893 Pa
0.5 psi	3,447.3786 Pa
1 psi	6,894.7573 Pa
2 psi	13,789.5146 Pa
5 psi	34,473.7865 Pa
10 psi	68,947.5729 Pa
25 psi	172,368.9323 Pa
100 psi	689,475.7293 Pa

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Compare all pressure conversion cheat sheet

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