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