Bar to PSI
Convert bar to pounds per square inch (psi) instantly. Free online pressure converter with formulas, tables and examples.
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Formula
psi = bar × 14.5037737730
bar = psi × 0.0689475729
Conversion table
| 1 bar | 14.503774 psi |
| 5 bar | 72.518869 psi |
| 10 bar | 145.037738 psi |
| 20 bar | 290.075475 psi |
| 50 bar | 725.188689 psi |
| 100 bar | 1450.377377 psi |
| 500 bar | 7251.886887 psi |
| 1000 bar | 14503.773773 psi |
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Frequently asked questions
What is the source unit in this conversion?
The source unit is the bar, a metric pressure unit approximately equal to atmospheric pressure at sea level.
What is the destination unit in this conversion?
The destination unit is pounds per square inch (psi), a pressure unit widely used in the United States for tires, hydraulics, and plumbing.
How do I convert bar to psi?
Multiply the bar value by 14.5037737730 to get psi. For example, 2 bar × 14.5037737730 = 29.007548 psi.
Is the bar to psi conversion exact?
Yes. Since 1 bar equals exactly 100,000 pascals and 1 psi equals exactly 6,894.757293168... pascals, the factor 14.5037737730 follows directly from those exact definitions.
Where is this conversion commonly used?
It's used for tire pressure, scuba diving equipment, industrial hydraulics, weather barometric readings, and engineering specifications that mix metric and US pressure units.
Can I convert psi back to bar?
Yes. Multiply the psi value by 0.0689475729 to get bar.
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About this conversion
This page converts bar, a metric pressure unit close to normal atmospheric pressure, into pounds per square inch (psi), a pressure unit common in the US for tires and hydraulics.
This conversion is widely used for checking tire pressure, scuba tank and regulator ratings, hydraulic and pneumatic system specifications, and weather barometric pressure readings.
The formula is psi = bar × 14.5037737730, derived from the exact SI definitions of the pascal-based units bar and psi.
The conversion is exact because both bar and psi are defined in terms of the pascal, the SI-derived unit of pressure, with fixed numeric relationships.
The bar is a legally recognized, though non-SI, metric unit of pressure widely used in Europe, while psi remains the everyday standard in the United States.