Boost Pressure Calculator
Convert between different boost pressure units (PSI, BAR, kPa) and calculate pressure ratios for turbocharged and supercharged engines.
Step 1: Pressure Details
Understanding Boost Pressure
Boost pressure is the amount of pressure above atmospheric pressure created by a turbocharger or supercharger. It’s typically measured in PSI (pounds per square inch) or BAR (metric unit). Higher boost pressures generally result in more engine power.
Step 2: Additional Options
About Pressure Ratios
The pressure ratio is calculated as (Boost Pressure + Atmospheric Pressure) / Atmospheric Pressure. This ratio helps determine the efficiency of forced induction systems. Most street turbo systems operate at pressure ratios between 1.5 and 2.5.
Pressure Conversion Results
Converted Pressure
Pressure Unit Comparison
| Pressure Unit | Value | Common Usage |
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Pressure Ratio Analysis
Pressure Conversion Formula
Absolute Pressure = Boost Pressure + Atmospheric Pressure
To calculate absolute pressure, add the boost pressure to the atmospheric pressure. The pressure ratio is then calculated as Absolute Pressure / Atmospheric Pressure. For example: 15 PSI boost + 14.7 PSI atmospheric = 29.7 PSI absolute pressure.
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