Bar To Psig Converter

What is a Bar to PSIG Conversion?

A Bar to PSIG conversion is the process of translating a pressure measurement from the metric unit of bar to the imperial unit of Pounds per Square Inch Gauge (PSIG). This conversion is crucial in many industrial and mechanical applications where pressure is measured relative to the surrounding atmospheric pressure.

• Bar: A metric unit of pressure equal to 100,000 Pascals. It is often used to measure absolute pressure.
• PSIG (Pounds per Square Inch Gauge): This unit measures the pressure in a system *above* the local atmospheric pressure. For example, a tire gauge measures PSIG. If a tire is at 35 PSIG, its internal pressure is 35 PSI higher than the outside air pressure.

Since both bar and PSIG are commonly used in industrial settings (e.g., hydraulics, pneumatics), our Bar to PSIG converter provides a vital bridge between metric specifications and imperial gauge readings.

How to Use the Bar to PSIG Converter

Our converter is designed for simplicity and provides instant, bidirectional conversions.

1. Enter a Value: The tool has two input fields: one for "Bar" and one for "PSIG".
2. Convert from Bar to PSIG: Type the pressure value in bars into the "Bar" field. The equivalent value in PSIG will be automatically calculated and displayed.
3. Convert from PSIG to Bar: Similarly, if you type a value into the "PSIG" field, the calculator will instantly provide the equivalent value in bars.
4. Swap Units: Use the swap button () to easily reverse the conversion direction.

The Conversion Formula

The conversion between bar and PSIG uses the same factor as bar to PSI, since PSIG is just a type of PSI measurement.

$$ 1 \text{ bar} \approx 14.50377 \text{ PSI} $$

Therefore, the formulas are:

$$ \text{PSIG} = \text{bar} \times 14.50377 $$

$$ \text{bar} = \frac{\text{PSIG}}{14.50377} $$

Practical Example: Industrial Compressor

An engineer is installing a new European-made air compressor. The manufacturer's manual states that the maximum safe operating pressure is 8 bar. The pressure gauge on the factory's air lines in the US is calibrated in PSIG. The engineer needs to set a safety relief valve in PSIG.

• Known Value: 8 bar
• Calculation: PSIG = 8 × 14.50377 ≈ 116.03 PSIG
• Using the calculator: Entering "8" in the bar field instantly shows approximately 116.03 in the PSIG field. The engineer can now confidently set the relief valve to trip at 115 PSIG, providing a safe margin.

This conversion is critical for ensuring operational safety and equipment longevity. For converting absolute pressures, you can use our Bar to PSI Converter or the general Pressure Converter. For flow rate calculations, the PSI to GPM Calculator is a great tool.

Why Distinguish PSIG from PSI?

• Clarity: PSIG explicitly states that the pressure is relative to the atmosphere. Absolute pressure (PSIA) is gauge pressure plus atmospheric pressure (approx. 14.7 PSI at sea level).
• Application: Most common pressure measurements, like in tires or air tanks, are gauge pressure because we want to know the pressure *above* ambient.
• Safety: In systems where over-pressurization is a risk, understanding gauge pressure is essential for setting safety limits.

For more information on industrial standards, you can visit the website of the American Society of Mechanical Engineers (ASME). For occupational safety guidelines, the Occupational Safety and Health Administration (OSHA) provides critical information.