How do I convert psi to bar?

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

What is the formula for psi to bar?

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

When should I use psi vs bar?

psi and bar 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 psi to bar

Use the live converter below to translate between Pound per square inch (psi) and Bar (bar). 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

psi → bar

Pound per square inch

psi

Bar

0.0689

bar

Rounded result (4 decimals max)

Formula

1 psi = 0.0689 bar

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

Results update as you type. Swap the direction to convert back from bar to psi.

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psi to bar quick table

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

Pound per square inch (psi)	Bar (bar)
0.25 psi	0.0172 bar
0.5 psi	0.0345 bar
1 psi	0.0689 bar
2 psi	0.1379 bar
5 psi	0.3447 bar
10 psi	0.6895 bar
25 psi	1.7237 bar
100 psi	6.8948 bar

bar back to psi

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

Bar (bar)	Pound per square inch (psi)
0.25 bar	3.6259 psi
0.5 bar	7.2519 psi
1 bar	14.5038 psi
2 bar	29.0075 psi
5 bar	72.5189 psi
10 bar	145.0377 psi
25 bar	362.5943 psi
100 bar	1,450.3774 psi

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Compare all pressure conversion cheat sheet

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