Reference
Engineering Unit Converter
Pressure, temperature, flow, length, mass, and power — all routed through a single SI base per quantity for consistency.
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Result
14.50377psi
About This Calculation
Engineering unit conversion sounds trivial until a specific field's units cross a system boundary — pressure alone has bar, psi, kPa, mmH2O, mmHg, kg/cm², and inH2O all in active industrial use, and a single wrong conversion factor (especially the ones that aren't simple powers of ten) is a genuinely common source of real instrumentation calibration errors. This tool exists as a fast, always-available reference for exactly those conversions engineers do dozens of times a week across pressure, flow, temperature, and other common process units.
Frequently Asked Questions
Why are there so many different pressure units in industrial use?
Regional and historical convention, mostly — psi and inH2O are common in US practice, bar and mbar in European/metric practice, kg/cm² in some Asian markets, and mmHg/mmH2O for vacuum and low-pressure work specifically because they correspond to a directly visible manometer column height.
Is temperature conversion just a simple multiplication like other units?
No — unlike most unit conversions, Celsius/Fahrenheit/Kelvin involve both a scale factor AND an offset (since their zero points don’t coincide), which is exactly the kind of conversion that’s easy to get subtly wrong doing it manually, especially for a TEMPERATURE DIFFERENCE (span) versus an absolute temperature value, which convert differently.
Why does flow unit conversion sometimes need density, not just a factor?
Converting between a VOLUMETRIC flow unit (m³/h, gpm) and a MASS flow unit (kg/h, lb/h) genuinely requires the fluid’s density — there is no universal conversion factor between them, since the same mass flow of a light gas and a heavy liquid occupy very different volumes.