STRUCTURAL
Pressure & stress
Pressure, material stress and fluid head.
Try a decimal, 1e-9, 1/3, or 5 1/2.
Result0.000986923 atm1 hPa = 0.000986923 atm
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hPa to atm Converter
Convert hectopascal (hPa) to standard atmosphere (atm). Enter a value for an instant result, or use the examples and reverse conversion below.
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 · 6 significant digits
Auto trims unnecessary zeroes and uses scientific notation for extreme magnitudes. Use Digits to set the display precision; calculations retain full precision.
QUICK REFERENCE
All units in this quantity
| Unit | Symbol | Converted value |
|---|---|---|
| pascalfrom hPa | Pa | 100 |
| hectopascalfrom hPa | hPa | 1 |
| kilopascalfrom hPa | kPa | 0.1 |
| megapascalfrom hPa | MPa | 0.0001 |
| gigapascalfrom hPa | GPa | 0.0000001 |
| millibarfrom hPa | mbar | 1 |
| barfrom hPa | bar | 0.001 |
| standard atmospherefrom hPa | atm | 0.000986923 |
| torrfrom hPa | Torr | 0.750062 |
| millimetre of mercuryfrom hPa | mmHg | 0.750062 |
| inch of mercury, conventionalfrom hPa | inHg | 0.02953 |
| millimetre of water, conventionalfrom hPa | mmH₂O | 10.1972 |
| inch of water, conventionalfrom hPa | inH₂O | 0.401463 |
| pound-force per square footfrom hPa | psf | 2.08854 |
| pound-force per square inchfrom hPa | psi | 0.0145038 |
| kilopound-force per square inchfrom hPa | ksi | 0.0000145038 |
| kilogram-force per square centimetrefrom hPa | kgf/cm² | 0.00101972 |
SI symbols follow international notation. U.S. and Imperial measures are labelled separately where their values differ.
hPa to atm Conversion Reference
Hectopascal (hPa) and standard atmosphere (atm) are units of pressure & stress. Use this page to convert in either direction.
Conversion Examples
| Hectopascal (hPa) | Standard Atmosphere (atm) |
|---|---|
| 1 hPa | 0.000986923 atm |
| 5 hPa | 0.00493462 atm |
| 10 hPa | 0.00986923 atm |
| 100 hPa | 0.0986923 atm |
Examples are rounded to 6 significant digits. The interactive converter retains full calculation precision; change Display Precision to see more digits.
Reverse Conversion
atm to hPa (standard atmosphere to hectopascal)
Related Pressure & stress Conversions
hPa to Pa (hectopascal to pascal)hPa to kPa (hectopascal to kilopascal)hPa to MPa (hectopascal to megapascal)hPa to GPa (hectopascal to gigapascal)hPa to mbar (hectopascal to millibar)hPa to bar (hectopascal to bar)hPa to Torr (hectopascal to torr)hPa to mmHg (hectopascal to millimetre of mercury)hPa to inHg (hectopascal to inch of mercury, conventional)hPa to mmH₂O (hectopascal to millimetre of water, conventional)hPa to inH₂O (hectopascal to inch of water, conventional)hPa to psf (hectopascal to pound-force per square foot)hPa to psi (hectopascal to pound-force per square inch)hPa to ksi (hectopascal to kilopound-force per square inch)hPa to kgf/cm² (hectopascal to kilogram-force per square centimetre)