STRUCTURAL
Pressure & stress
Pressure, material stress and fluid head.
Try a decimal, 1e-9, 1/3, or 5 1/2.
ResulthPa → atmConvert hectopascal to standard atmosphere
EVERYDAY · ENGINEERING · SCIENCE
Unit conversion. Made clear.
Start with a familiar unit, type a value, and get a dependable answer with sensible precision. Fractions and scientific notation are welcome.
520units ready to convert
HOW IT IS CALCULATED
Convert through pascal
Enter a hectopascal value to calculate standard atmosphere with full internal precision before display rounding.
Display precisionAuto · 12 significant digits
Auto keeps up to 12 significant digits, trims unnecessary zeroes, and switches to scientific notation for extreme magnitudes.
QUICK REFERENCE
All units in this quantity
| Unit | Symbol | Converted value |
|---|---|---|
| pascalfrom hPa | Pa | Interactive |
| hectopascalfrom hPa | hPa | Interactive |
| kilopascalfrom hPa | kPa | Interactive |
| megapascalfrom hPa | MPa | Interactive |
| gigapascalfrom hPa | GPa | Interactive |
| millibarfrom hPa | mbar | Interactive |
| barfrom hPa | bar | Interactive |
| standard atmospherefrom hPa | atm | Interactive |
| torrfrom hPa | Torr | Interactive |
| millimetre of mercuryfrom hPa | mmHg | Interactive |
| inch of mercury, conventionalfrom hPa | inHg | Interactive |
| millimetre of water, conventionalfrom hPa | mmH₂O | Interactive |
| inch of water, conventionalfrom hPa | inH₂O | Interactive |
| pound-force per square footfrom hPa | psf | Interactive |
| pound-force per square inchfrom hPa | psi | Interactive |
| kilopound-force per square inchfrom hPa | ksi | Interactive |
| kilogram-force per square centimetrefrom hPa | kgf/cm² | Interactive |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.