PressureBar to Psi

Bar to Pounds per Square Inch

Methodology·How We Verify

Snapshot

1 Bar equals 14.503774 Pounds per Square Inch.

Reference basis: This conversion uses exact pascal-based pressure definitions.
Example: For 0.5 Bar, the result equals 7.251887 Pounds per Square Inch.

Interactive conversion

Converter Calculator

Decimals: 1.5 or 1,5. Fractions: 1/2. Scientific notation: 1e3. Write 1000 without grouping separators.

14.503774 Pounds per Square Inch (psi)

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API and AI agent access

Bar to Pounds per Square Inch.

Machine-readable identifiers

Conversion family: pressure
Source unit: bar
Target unit: psi

Use these identifiers in the API request. Sources and model limits also apply to software clients.

Example API request and response

POST /api/v1/convert

Request

{
  "family": "pressure",
  "value": 1,
  "from": "bar",
  "to": "psi"
}

Essential response

{
  "ok": true,
  "conversion": {
    "family": "pressure",
    "value": 1,
    "from": "bar",
    "to": "psi",
    "result": {
      "raw": 14.503773773021683,
      "display": "14.503774"
    },
    "canonicalPath": "/pressure/bar-to-psi/"
  }
}

API, OpenAPI and WebMCP documentation

Explanation

The converter converts bar to psi using the exact pascal-based pressure relationship between bar and pounds per square inch. It is useful for workshop gauges, hydraulic systems, industrial equipment, and compressor specs where bar and psi often appear side by side.

Formula: psi = bar × 14.503773773021683. Because both units are fixed pressure units normalized through pascals, the calculator, common values, and reverse page stay aligned on the same exact factor.

Method & Reference

Method basis: exact conversion formula shown in Snapshot.
Applied factor: 1 Bar = 14.503774 Pounds per Square Inch (using exact pascal-based pressure definitions).
Consistency rule: calculator output and table values use the same constants and rounding policy.

Common Conversion Values

Bar (bar)	Pounds per Square Inch (psi)
1/2	7.251887
1	14.503774
2	29.007548
5	72.518869
10	145.037738
20	290.075475
50	725.188689
100	1,450.377377
200	2,900.754755
300	4,351.132132

Questions & answers

Frequently Asked Questions

What is 1 bar in pounds per square inch?

1 Bar equals 14.503774 Pounds per Square Inch on this page.

When would I convert bar to pounds per square inch?

This route is useful when translating pressure values across SI, metric engineering, and imperial conventions so datasheets, gauges, and calculations stay comparable.

How do I reverse Bar to Pounds per Square Inch?

Use the mirror Pounds per Square Inch to Bar route; it applies the inverse relationship with the same pressure assumptions.