Inches of Mercury to Hectopascals Converter
Type a value in inches of mercury to see it in hectopascals. It works both ways: type in the hectopascals box to convert back.
Formula
To convert inches of mercury to hectopascals, multiply by 33.8638864.
1 inHg = 33.8638864034 hPa and 1 hPa = 0.029529983301 inHg.
Inches of mercury to hectopascals table
| Inches of mercury | Hectopascals |
|---|---|
| 28 inHg | 948.1888 hPa |
| 29 inHg | 982.0527 hPa |
| 29.5 inHg | 998.9846 hPa |
| 29.92 inHg | 1,013.207 hPa |
| 30 inHg | 1,015.917 hPa |
| 30.5 inHg | 1,032.849 hPa |
| 31 inHg | 1,049.78 hPa |
Worked examples
29 inHg in hectopascals
29 inHg
982.0527 hPa
29 × 33.8638864 = 982.0527057
29.92 inHg in hectopascals
29.92 inHg
1,013.207 hPa
29.92 × 33.8638864 = 1,013.207481
30.5 inHg in hectopascals
30.5 inHg
1,032.849 hPa
30.5 × 33.8638864 = 1,032.848535
About Inches of Mercury to Hectopascals Converter
This converter turns inches of mercury into hectopascals as you type, and works the other way too: type in the hectopascals box to convert back. To convert inches of mercury to hectopascals, multiply by 33.8638864. For example, 29 inHg is 982.0527 hPa, and 29.92 inHg is 1,013.207 hPa.
Pressure is quoted in different units for tyres, weather, blood pressure and engineering, so converting between bar, psi, kilopascals and millimetres of mercury is common. Both units have exact definitions, so the converter gives an exact result, rounded only for display. Use the table below for common values, or set the decimal places to round the answer for a form or a label.
How to use Inches of Mercury to Hectopascals Converter
- Type the amount in inches of mercury in the first box.
- Read the answer in hectopascals in the second box and in the result line below.
- To convert the other way, type in the hectopascals box instead, or use the swap button to open the hectopascals to inches of mercury page.
- Choose a number of decimal places if you need a rounded figure, then copy the result line.
Common uses
- Setting tyre pressures from a handbook in another unit
- Reading air pressure on a barometer or forecast
- Understanding a blood pressure reading
- Checking boiler, pump or compressor pressures
Frequently asked questions
How many hectopascals are in one inch of mercury?
There are 33.8638864 hectopascals in one inch of mercury. This figure is exact, because both units have fixed definitions.
How do I convert inches of mercury to hectopascals?
To convert inches of mercury to hectopascals, multiply by 33.8638864. For example, 30.5 inHg is 1,032.849 hPa.
How do I convert hectopascals to inches of mercury?
Going the other way, divide by 33.8638864 (the same as multiplying by 0.0295299833). The hectopascals to inches of mercury converter does this for you.
What is 29.92 inHg in hectopascals?
29.92 inHg is 1,013.207 hPa.
What is normal air pressure at sea level?
Standard atmospheric pressure is 1,013.25 hectopascals, which is 1 atmosphere, about 14.7 psi or 760 mmHg. Real air pressure changes with the weather.