Micropascal is 0.000001 pascal units.
Micropascals to Zeptopascals Converter — uPa to zPa
Convert Micropascal (uPa) to Zeptopascal (zPa) using the exact conversion factor (1 micropascal = 1e+15 zeptopascal). See the formula, worked examples, and conversion table.
Micropascals to Zeptopascals 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.
Zeptopascal is 1e-21 pascal units.
Result = input x 1e-6 / 1e-21.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Micropascals to Zeptopascals
Micropascal and Zeptopascal 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: Micropascal is 0.000001 pascal units, and zeptopascal is 1e-21 pascal units.
Formula
zeptopascals = micropascals × 1e+15
This factor comes from each unit's defined relationship to the category's base unit: 1 micropascal equals 0.000001 base units, and 1 zeptopascal equals 1e-21 base units, so dividing one by the other gives the direct micropascal-to-zeptopascal factor of 1e+15.
Simple example
1 uPa × 1e+15 = 1e+15 zPa
1 micropascal = 1e+15 zeptopascals.
Real-world example
35 uPa × 1e+15 = 3.5e+16 zPa
35 micropascals = 3.5e+16 zeptopascals.
Conversion table
| Micropascal (uPa) | Zeptopascal (zPa) |
|---|---|
| 1 uPa | 1e+15 zPa |
| 5 uPa | 5e+15 zPa |
| 10 uPa | 1e+16 zPa |
| 25 uPa | 2.5e+16 zPa |
| 50 uPa | 5e+16 zPa |
| 100 uPa | 1e+17 zPa |
Reverse conversion: Zeptopascal to Micropascal
1e+15 zPa × 1e-15 = 1 uPa
1e+15 zeptopascals = 1 micropascal.
micropascals = zeptopascals × 1e-15
For a page dedicated to this direction, see Zeptopascal to Micropascal.
Understanding the Micropascal (uPa)
Micropascal is 0.000001 pascal units.
Understanding the Zeptopascal (zPa)
Zeptopascal is 1e-21 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many zeptopascals are in 1 micropascal?
1 micropascal equals 1e+15 zeptopascals, using the exact defined conversion factor rather than an estimate.
How do I convert micropascal to zeptopascal?
Multiply the micropascal value by 1e+15. The converter above does this instantly to whatever precision you set.
How do I convert zeptopascal back to micropascal?
Use the reverse factor: 1 zeptopascal equals 1e-15 micropascals. You can also use the swap control in the converter above to flip the direction instantly.
What is a micropascal?
Micropascal (uPa) is a unit of pressure.
What is a zeptopascal?
Zeptopascal (zPa) is a unit of pressure.
Is the micropascal to zeptopascal conversion exact?
Yes. Both micropascal and zeptopascal are defined by fixed standards rather than physical artifacts, so the factor of 1e+15 used above is exact to as many digits as you choose to display.