Micropascal is 0.000001 pascal units.
Micropascals to Attopascals Converter — uPa to aPa
Convert Micropascal (uPa) to Attopascal (aPa) using the exact conversion factor (1 micropascal = 1,000,000,000,000 attopascal). See the formula, worked examples, and conversion table.
Micropascals to Attopascals 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.
Attopascal is 1e-18 pascal units.
Result = input x 1e-6 / 1e-18.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Micropascals to Attopascals
Micropascal and Attopascal 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 attopascal is 1e-18 pascal units.
Formula
attopascals = micropascals × 1000000000000
This factor comes from each unit's defined relationship to the category's base unit: 1 micropascal equals 0.000001 base units, and 1 attopascal equals 1e-18 base units, so dividing one by the other gives the direct micropascal-to-attopascal factor of 1000000000000.
Simple example
1 uPa × 1000000000000 = 1,000,000,000,000 aPa
1 micropascal = 1,000,000,000,000 attopascals.
Real-world example
35 uPa × 1000000000000 = 3.5e+13 aPa
35 micropascals = 3.5e+13 attopascals.
Conversion table
| Micropascal (uPa) | Attopascal (aPa) |
|---|---|
| 1 uPa | 1,000,000,000,000 aPa |
| 5 uPa | 5e+12 aPa |
| 10 uPa | 1e+13 aPa |
| 25 uPa | 2.5e+13 aPa |
| 50 uPa | 5e+13 aPa |
| 100 uPa | 1e+14 aPa |
Reverse conversion: Attopascal to Micropascal
1 aPa × 1e-12 = 1e-12 uPa
1 attopascal = 1e-12 micropascals.
micropascals = attopascals × 1e-12
For a page dedicated to this direction, see Attopascal to Micropascal.
Understanding the Micropascal (uPa)
Micropascal is 0.000001 pascal units.
Understanding the Attopascal (aPa)
Attopascal is 1e-18 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many attopascals are in 1 micropascal?
1 micropascal equals 1,000,000,000,000 attopascals, using the exact defined conversion factor rather than an estimate.
How do I convert micropascal to attopascal?
Multiply the micropascal value by 1000000000000. The converter above does this instantly to whatever precision you set.
How do I convert attopascal back to micropascal?
Use the reverse factor: 1 attopascal equals 1e-12 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 attopascal?
Attopascal (aPa) is a unit of pressure.
Is the micropascal to attopascal conversion exact?
Yes. Both micropascal and attopascal are defined by fixed standards rather than physical artifacts, so the factor of 1000000000000 used above is exact to as many digits as you choose to display.