## Math in the Natural Sciences## Math in Meteorology |

## How are millibars converted to inches of mercury? |

Mathematically, the conversion is simple. The air pressure at sea level is 29.92 inches of mercury, or 1,013.2 millibars. For example, if you see air pressure of 1,016 millibars on a weather map, convert to inches of mercury by multiplying by 29.92, and then divide by 1,013.2. The result is 30.00 inches of mercury.