Convert hectopascals to millibars and mbar to hPa instantly. Bidirectional pressure converter confirming the 1:1 equivalence.
The conversion is 1:1. One hectopascal equals exactly one millibar. Both equal 100 pascals. No calculation is needed; the numeric value stays the same.
| Hectopascals | Millibars |
|---|---|
| 870 | 870 |
| 950 | 950 |
| 1,000 | 1,000 |
| 1,013.25 | 1,013.25 |
| 1,030 | 1,030 |
| 1,050 | 1,050 |
| 1,085 | 1,085 |
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Yes. One hectopascal (hPa) equals exactly one millibar (mbar). They are numerically identical units. The WMO officially uses hPa but many weather services still report in mbar.
The millibar was the traditional meteorological unit. When the SI system was adopted, hectopascal (100 Pa) was introduced as the SI-compatible equivalent. Since 1 hPa = 1 mbar exactly, both names persist.
Standard atmospheric pressure is 1,013.25 hPa (which equals 1,013.25 mbar, 101,325 Pa, or 1 atm).
The WMO and most national weather services officially use hPa. Aviation uses hPa for altimeter settings (QNH). Some US media still use millibars or inches of mercury.