Barometric Pressure Converter
Result
Barometric Pressure Converter Convert a barometric (atmospheric) pressure reading between the units used in weather and aviation: hectopascals/millibars (hPa/mb), inches of mercury (inHg), millimetres of mercury (mmHg), kilopascals (kPa), and standard atm — convert units quickly and accurately.
Formula
- Convert a barometric pressure measurement to hPa, kPa, inHg, mmHg and atm.
- The main inputs are Value, From unit, To unit. Enter them in the units and format shown in the calculator.
- For unit conversions, the calculator applies the conversion relationship shown above and keeps source and target units consistent with the selected options.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Barometric Pressure
- Value: 1
- From unit: meter (m)
- To unit: decimeter (dm)
Example inputs: Pressure (hPa) = 1013.25. Calculated result: hPa / mbar: 1013.25 | kPa: 101.325 | inHg: 29.9212524 | mmHg: 759.99989173 | Standard atm: 1.
Sample result: Calculating…
Frequently asked questions
What does the Barometric Pressure calculate?
The calculator uses standard conversion factors. Temperature conversions use exact scale formulas.
Which values should I enter?
Enter Value, From unit, To unit using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: Pa = hPa × 100; 1 inHg = 3386.389 Pa; 1 mmHg = 133.322387415 Pa.
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.