hectopascal to millipascal
Convert hectopascal (hPa) to millipascal (mPa). Use an editable pressure converter, conversion formula, and reference table.
1 hPa = 100,000 mPa
Conversion formula
One hectopascal equals 100,000 millipascal. Multiply your value in hectopascal by this factor to get millipascal. For the reverse conversion, divide by the same factor.
Worked example
To convert 5 hectopascal:5 × 100,000 = 500,000 mPa
Conversion table
| hectopascal (hPa) | millipascal (mPa) |
|---|---|
| 0.01 | 1,000 |
| 0.1 | 10,000 |
| 1 | 100,000 |
| 2 | 200,000 |
| 5 | 500,000 |
| 10 | 1,000,000 |
| 25 | 2,500,000 |
| 50 | 5,000,000 |
| 100 | 10,000,000 |
| 1000 | 100,000,000 |
About these measurements
Pressure is force per unit of area.
The base reference used here is the pascal. One hectopascal is 100 base units; one millipascal is 0.001 base units.
Important distinctions
Gauge and absolute pressures must not be mixed. This converts units without changing the reference pressure.
Precision
The converter uses stored conversion factors and floating-point arithmetic. Results display up to ten significant digits, switching to scientific notation for very small or large values. Keep the precision of your original measurement when reporting results.
Common questions
How do I convert hPa to mPa?
Multiply the quantity in hPa by 100,000. You can also type the value into the converter above.
Can I reverse the conversion?
Yes. Use the swap button or open the millipascal to hectopascal converter.
Reference
NIST Guide to the SI — conversion factors and prefix conventions. SI prefixes scale units by powers of ten; the dimension-specific notes above describe the assumptions used on this page.
