psi to bar | Exact Decimal + Formula

1 PSI (Pounds/sq in) = 0.068948 Bar

Pounds per square inch (PSI) to bar conversions are standard in tire pressure checks, scuba diving equipment ratings, and HVAC system monitoring.

About PSI (Pounds/sq in) and Bar

PSI (Pounds/sq in) (psi)

PSI (pounds per square inch) measures pressure in pounds of force per square inch, about 6,895 pascals.

Where it's used: Tire pressures, air compressors, hydraulic systems, and plumbing in the US.

Bar (bar)

A bar is exactly 100,000 pascals, very close to standard atmospheric pressure.

Where it's used: Scuba-diving tank pressures, espresso machines, and European industrial gauges.

Pressure Converter

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Precision

Formula

bar = psi × 0.068947573

To convert PSI (Pounds/sq in) to Bar, use the formula displayed above.

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PSI (Pounds/sq in) to Bar: Quick Reference Table

PSI (Pounds/sq in)	Bar (Decimal)	Fraction	Real-world equivalent
0.001 psi	0.000069 bar	-	fractional unit measurement
0.01 psi	0.000689 bar	-	fractional unit measurement
0.1 psi	0.006895 bar	-	fractional unit measurement
0.5 psi	0.034474 bar	-	fractional unit measurement
1 psi	0.068948 bar	-	fractional unit measurement
2 psi	0.137895 bar	-	fractional unit measurement
5 psi	0.344738 bar	-	fractional unit measurement
10 psi	0.689476 bar	-	fractional unit measurement
25 psi	1.723689 bar	-	standard single unit scale
50 psi	3.447379 bar	-	standard single unit scale
100 psi	6.894757 bar	-	standard single unit scale
250 psi	17.236893 bar	-	multiple unit increments
500 psi	34.473786 bar	-	multiple unit increments
1000 psi	68.947573 bar	-	multiple unit increments

psi to bar Formula and Examples

Direct Formula bar = psi × 0.068947573

Inverse Formula psi = bar × 14.503774

Mental Math Shortcut

Divide the value by roughly 14.5 to quickly estimate the converted result.

Common PSI (Pounds/sq in) to Bar Calculations

5 psi = 0.344738 bar
10 psi = 0.689476 bar
50 psi = 3.447379 bar
100 psi = 6.894757 bar
500 psi = 34.473786 bar

Precision & Practical Use

For example, 10 psi = 0.689476 bar — roughly fractional unit measurement.

Tire pressures are specified to 1 psi or 0.1 bar; scuba and HVAC work also use whole units. The extra decimals here are for engineering precision.

Related Specialist Pressure Calculators & Niche Tools

Pressure represents force acting over a unit of area. Standard pressure scales like PSI, bar, kilopascals (kPa), and atmospheres (atm) are utilized in HVAC, hydraulics, automotive tire inflation, and pneumatic tool operations.

Converting pressure ratings accurately is essential for equipment safety. For instance, European machinery gauges often use bar, whereas American compressors use PSI, necessitating quick conversions to prevent system over-pressurization. Our pressure calculators help technicians easily convert between scales, ensuring pressure vessels, hydraulic lines, and automotive tires are maintained at the correct operational levels.

PSI/Bar/kPa Converter Convert pressure units.

How to Convert PSI (Pounds/sq in) to Bar

How many bars are in one psi (pounds/sq in)?

One PSI (Pounds/sq in) (psi) equals 0.068948 Bar (bar). To convert psi (pounds/sq in)s to bars, multiply the psi (pounds/sq in) value by 0.068948.

How do I convert PSI (Pounds/sq in) to Bar?

Multiply your psi (pounds/sq in) value by 0.068948 to get the result in Bar: bar = psi × 0.068948. For example, 5 psi = 0.344738 bar.

What is the formula for converting psi to bar?

The conversion formula is bar = psi × 0.068948. Use the calculator above for any value, and see the reference table below for common inputs from 0.001 to 1000.

Is there a quick mental estimate for psi to bar?