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Pressure Converter — PSI, Bar, kPa for Plumbing & HVAC

Convert pressure units instantly with verified accuracy. Includes standard trade reference tables for residential water supply and pneumatic tools.

To convert PSI to bar, multiply by 0.0689476. One bar equals 14.5038 PSI. Residential water pressure typically runs 40–80 PSI (2.76–5.52 bar). Pressures above 80 PSI require a pressure reducing valve per UPC code.

Pressure Unit Converter
PSI · Bar · kPa · MPa · atm · mmHg
6.8948 bar
100 PSI = 6.8948 bar
Conversion Formula
100 × 0.0689476 = 6.8948 bar
Quick Conversion Grid

Standard Pressure Reference Tables

ApplicationPSI RangeBar RangeNotes
Residential Water Supply40–802.76–5.52Ideal is 60 PSI
Fire Sprinkler Systems175 max12.07Working pressure
Framing Nailers70–1204.83–8.27Check tool specs
Finish Nailers60–1004.14–6.89Brad/Finish tools
Tire Pressure (Passenger)30–352.07–2.41Cold pressure
 Common industry pressure benchmarks for field reference.
How many PSI are in 1 bar?▶

Exactly 1 bar is equal to 14.5038 PSI. Conversely, 1 PSI is approximately 0.0689 bar. Bar is a metric unit of pressure used globally, while PSI (pounds per square inch) is the primary unit in North America.