Hectopascal is 100 pascal units.
Hectopascals to Micropascals Converter — hPa to uPa
Convert Hectopascal (hPa) to Micropascal (uPa) using the exact conversion factor (1 hectopascal = 100,000,000 micropascal). See the formula, worked examples, and conversion table.
Hectopascals to Micropascals converter
Converter
Pressure Converter
Convert pascals, bars, PSI, atmospheres, mercury columns, water columns, and engineering pressure units.
Context values
Some unit families need one extra value for a physically accurate result.
Micropascal is 0.000001 pascal units.
Result = input x 100 / 1e-6.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Hectopascals to Micropascals
Hectopascal and Micropascal both show up on pressure gauges — psi is standard on US tire and tool specifications, while bar is the everyday pressure unit across most of the rest of the world. Specifically: Hectopascal is 100 pascal units, and micropascal is 0.000001 pascal units.
Formula
micropascals = hectopascals × 100000000
This factor comes from each unit's defined relationship to the category's base unit: 1 hectopascal equals 100 base units, and 1 micropascal equals 0.000001 base units, so dividing one by the other gives the direct hectopascal-to-micropascal factor of 100000000.
Simple example
1 hPa × 100000000 = 100,000,000 uPa
1 hectopascal = 100,000,000 micropascals.
Real-world example
35 hPa × 100000000 = 3,500,000,000 uPa
35 hectopascals = 3,500,000,000 micropascals.
Conversion table
| Hectopascal (hPa) | Micropascal (uPa) |
|---|---|
| 1 hPa | 100,000,000 uPa |
| 5 hPa | 500,000,000 uPa |
| 10 hPa | 1,000,000,000 uPa |
| 25 hPa | 2,500,000,000 uPa |
| 50 hPa | 5,000,000,000 uPa |
| 100 hPa | 10,000,000,000 uPa |
Reverse conversion: Micropascal to Hectopascal
1 uPa × 1e-8 = 1e-8 hPa
1 micropascal = 1e-8 hectopascals.
hectopascals = micropascals × 1e-8
For a page dedicated to this direction, see Micropascal to Hectopascal.
Understanding the Hectopascal (hPa)
Hectopascal is 100 pascal units.
Understanding the Micropascal (uPa)
Micropascal is 0.000001 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many micropascals are in 1 hectopascal?
1 hectopascal equals 100,000,000 micropascals, using the exact defined conversion factor rather than an estimate.
How do I convert hectopascal to micropascal?
Multiply the hectopascal value by 100000000. The converter above does this instantly to whatever precision you set.
How do I convert micropascal back to hectopascal?
Use the reverse factor: 1 micropascal equals 1e-8 hectopascals. You can also use the swap control in the converter above to flip the direction instantly.
What is a hectopascal?
Hectopascal (hPa) is a unit of pressure.
What is a micropascal?
Micropascal (uPa) is a unit of pressure.
Is the hectopascal to micropascal conversion exact?
Yes. Both hectopascal and micropascal are defined by fixed standards rather than physical artifacts, so the factor of 100000000 used above is exact to as many digits as you choose to display.