PressureBar to Psi

Bar to Pounds per Square Inch

Snapshot

1 Bar equals 14.503774 Pounds per Square Inch. Conversion Encyclopedia uses the same fixed conversion basis across the calculator, common values, and reverse page for this page.

Reference basis: This conversion uses exact pascal-based pressure definitions.
Example: For 0.5 Bar, the result equals 7.251887 Pounds per Square Inch.
Use the reverse page if you need the opposite direction with the same basis.

Use the interactive calculator below for custom values and the common-value table for quick checks.

Interactive conversion

Converter Calculator

14.503774 Pounds per Square Inch (psi)

Switch

Machine access

Available to apps and AI agents

Bar to Pounds per Square Inch can be requested through Conversion Encyclopedia's structured interfaces by software and compatible AI agents. The identifiers below select the same calculation as the calculator.

Machine-readable identifiers

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

The JSON API and OpenAPI specification use the identifiers to reach the conversion engine. WebMCP lets compatible AI agents request the same calculation.

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/"
  }
}

Full API documentation

Explanation

Formula: Pounds per Square Inch = Bar × 14.503774. Why: this is a cross-system pressure conversion. The calculator normalizes the value through pascals, then applies the exact target-unit constant for consistent engineering and reference use.

Bar: a metric engineering pressure unit fixed at exactly 100,000 pascals, common in industrial systems, hydraulics, and process equipment.

Pounds per square inch (psi): an imperial pressure unit widely used in tires, hydraulics, compressed gas systems, and general mechanical work.

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

This conversion is purely multiplicative because both units reduce through pascals using fixed pressure constants with no offset.

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)
0.5	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.

Does this Bar to Pounds per Square Inch page use fixed pascal equivalents for psi or mmHg?

Yes. Psi and mmHg use fixed pascal equivalents on this page, so gauge, vacuum, and instrumentation values stay consistent across the direct answer, calculator, and table.

When would I convert bar to pounds per square inch?