Hectopascal is 100 pascal units.
Hectopascals to Exapascals Converter — hPa to EPa
Convert Hectopascal (hPa) to Exapascal (EPa) using the exact conversion factor (1 hectopascal = 1e-16 exapascal). See the formula, worked examples, and conversion table.
Hectopascals to Exapascals 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.
Exapascal is 1000000000000000000 pascal units.
Result = input x 100 / 1e+18.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Hectopascals to Exapascals
Hectopascal and Exapascal 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 exapascal is 1000000000000000000 pascal units.
Formula
exapascals = hectopascals × 1e-16
This factor comes from each unit's defined relationship to the category's base unit: 1 hectopascal equals 100 base units, and 1 exapascal equals 1e+18 base units, so dividing one by the other gives the direct hectopascal-to-exapascal factor of 1e-16.
Simple example
1 hPa × 1e-16 = 1e-16 EPa
1 hectopascal = 1e-16 exapascals.
Real-world example
35 hPa × 1e-16 = 3.5e-15 EPa
35 hectopascals = 3.5e-15 exapascals.
Conversion table
| Hectopascal (hPa) | Exapascal (EPa) |
|---|---|
| 1 hPa | 1e-16 EPa |
| 5 hPa | 5e-16 EPa |
| 10 hPa | 1e-15 EPa |
| 25 hPa | 2.5e-15 EPa |
| 50 hPa | 5e-15 EPa |
| 100 hPa | 1e-14 EPa |
Reverse conversion: Exapascal to Hectopascal
1e-16 EPa × 1e+16 = 1 hPa
1e-16 exapascals = 1 hectopascal.
hectopascals = exapascals × 1e+16
For a page dedicated to this direction, see Exapascal to Hectopascal.
Understanding the Hectopascal (hPa)
Hectopascal is 100 pascal units.
Understanding the Exapascal (EPa)
Exapascal is 1000000000000000000 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many exapascals are in 1 hectopascal?
1 hectopascal equals 1e-16 exapascals, using the exact defined conversion factor rather than an estimate.
How do I convert hectopascal to exapascal?
Multiply the hectopascal value by 1e-16. The converter above does this instantly to whatever precision you set.
How do I convert exapascal back to hectopascal?
Use the reverse factor: 1 exapascal equals 1e+16 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 exapascal?
Exapascal (EPa) is a unit of pressure.
Is the hectopascal to exapascal conversion exact?
Yes. Both hectopascal and exapascal are defined by fixed standards rather than physical artifacts, so the factor of 1e-16 used above is exact to as many digits as you choose to display.