Yoctopascal is 1e-24 pascal units.
Yoctopascals to Attopascals Converter — yPa to aPa
Convert Yoctopascal (yPa) to Attopascal (aPa) using the exact conversion factor (1 yoctopascal = 0.000001 attopascal). See the formula, worked examples, and conversion table.
Yoctopascals 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-24 / 1e-18.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Yoctopascals to Attopascals
Yoctopascal 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: Yoctopascal is 1e-24 pascal units, and attopascal is 1e-18 pascal units.
Formula
attopascals = yoctopascals × 0.000001
This factor comes from each unit's defined relationship to the category's base unit: 1 yoctopascal equals 1e-24 base units, and 1 attopascal equals 1e-18 base units, so dividing one by the other gives the direct yoctopascal-to-attopascal factor of 0.000001.
Simple example
1 yPa × 0.000001 = 0.000001 aPa
1 yoctopascal = 0.000001 attopascals.
Real-world example
35 yPa × 0.000001 = 0.000035 aPa
35 yoctopascals = 0.000035 attopascals.
Conversion table
| Yoctopascal (yPa) | Attopascal (aPa) |
|---|---|
| 1 yPa | 0.000001 aPa |
| 5 yPa | 0.000005 aPa |
| 10 yPa | 0.00001 aPa |
| 25 yPa | 0.000025 aPa |
| 50 yPa | 0.00005 aPa |
| 100 yPa | 0.0001 aPa |
Reverse conversion: Attopascal to Yoctopascal
0.000001 aPa × 1000000 = 1 yPa
0.000001 attopascals = 1 yoctopascals.
yoctopascals = attopascals × 1000000
For a page dedicated to this direction, see Attopascal to Yoctopascal.
Understanding the Yoctopascal (yPa)
Yoctopascal is 1e-24 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 yoctopascal?
1 yoctopascal equals 0.000001 attopascals, using the exact defined conversion factor rather than an estimate.
How do I convert yoctopascal to attopascal?
Multiply the yoctopascal value by 0.000001. The converter above does this instantly to whatever precision you set.
How do I convert attopascal back to yoctopascal?
Use the reverse factor: 1 attopascal equals 1,000,000 yoctopascals. You can also use the swap control in the converter above to flip the direction instantly.
What is a yoctopascal?
Yoctopascal (yPa) is a unit of pressure.
What is a attopascal?
Attopascal (aPa) is a unit of pressure.
Is the yoctopascal to attopascal conversion exact?
Yes. Both yoctopascal and attopascal are defined by fixed standards rather than physical artifacts, so the factor of 0.000001 used above is exact to as many digits as you choose to display.