Convert Between Units of Pressure
Speed measures how fast something moves. It is used in transportation, fluid flow velocity, wind engineering, and machinery. Common units include meters per second (m/s), kilometers per hour (km/h), miles per hour (mph), feet per second (ft/s), and knots. Converting speed units is useful when comparing standards and datasets that use different conventions.
Popular Pressure Conversions
Based on conversions run in the last 60 days.
- psi to ksf · 4
About Pressure Conversions
Helpful context and notes for converting Pressure units.
A useful anchor is that 1 m/s equals 3.6 km/h. That makes quick checks easy: 20 m/s is 72 km/h, and 30 m/s is 108 km/h. Speed is sometimes used in squared relationships, such as wind pressure and dynamic effects, so a unit mistake can be amplified. Also note that some sources report peak values while others report averages (for example, gust wind speed vs sustained wind speed).
Practical tip: convert and then sanity-check magnitude. A design wind speed of 120 km/h should be about 33.3 m/s. If you accidentally treat km/h as m/s, the implied speed is 3.6 times higher, and any squared load relationship will be about 13 times higher. For marine and aviation contexts, confirm whether the source uses knots. If a speed value drives loads or safety decisions, keep the original unit noted alongside the converted value.
Frequently Asked Questions
Fun Fact
One mechanical horsepower is about the power of a very determined horse - or about what it takes to justify buying a louder car than you really need.
Supported Units
Common and engineering-specific units supported for this conversion.
- at (atmospheres)
- bar (bars)
- Ba (Baryes)
- cmHG (centimeters of mercury)
- cPa (centipascals)
- daPa (decapascals)
- dPa (decipascals)
- ftHg (Foot of Mercuries)
- ftH2O (Foot of Waters)
- bar-g (Gauge Bars)
- Pa-g (Gauge Pascals)
- psi-g (Gauge PSIs)
- GPa (gigapascals)
- GPa (gigapascals)
- hPa (hectopascals)
- inHG (inches of mercury)
- inH2O (Inch of Waters)
- kPa (kilopascals)
- kPa (kilopascals)
- ksf (kips per square foot)
- ksi (kips per square inch)
- MPa (megapascals)
- MPa (megapascals)
- mHg (Meter of Mercuries)
- mH2O (Meter of Waters)
- μPa (micropascals)
- mPa (millipascals)
- nPa (nanopascals)
- Pa (pascals)
- pPa (picopascals)
- psf (pounds per square foot)
- psi (pounds per square inch)
- psi (Pound per Square Inch)
- TPa (terapascals)
- tsf (tons per square foot)
- Torr (Torrs)
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