Micropascal is 0.000001 pascal units.
Micropascals to Millipascals Converter — uPa to mPa
Convert Micropascal (uPa) to Millipascal (mPa) using the exact conversion factor (1 micropascal = 0.001 millipascal). See the formula, worked examples, and conversion table.
Micropascals to Millipascals 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.
Millipascal is 0.001 pascal units.
Result = input x 1e-6 / 0.001.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Micropascals to Millipascals
Micropascal and Millipascal 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 millipascal is 0.001 pascal units.
Formula
millipascals = micropascals × 0.001
This factor comes from each unit's defined relationship to the category's base unit: 1 micropascal equals 0.000001 base units, and 1 millipascal equals 0.001 base units, so dividing one by the other gives the direct micropascal-to-millipascal factor of 0.001.
Simple example
1 uPa × 0.001 = 0.001 mPa
1 micropascal = 0.001 millipascals.
Real-world example
35 uPa × 0.001 = 0.035 mPa
35 micropascals = 0.035 millipascals.
Conversion table
| Micropascal (uPa) | Millipascal (mPa) |
|---|---|
| 1 uPa | 0.001 mPa |
| 5 uPa | 0.005 mPa |
| 10 uPa | 0.01 mPa |
| 25 uPa | 0.025 mPa |
| 50 uPa | 0.05 mPa |
| 100 uPa | 0.1 mPa |
Reverse conversion: Millipascal to Micropascal
0.001 mPa × 1000 = 1 uPa
0.001 millipascals = 1 micropascal.
micropascals = millipascals × 1000
For a page dedicated to this direction, see Millipascal to Micropascal.
Understanding the Micropascal (uPa)
Micropascal is 0.000001 pascal units.
Understanding the Millipascal (mPa)
Millipascal is 0.001 pascal units.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many millipascals are in 1 micropascal?
1 micropascal equals 0.001 millipascals, using the exact defined conversion factor rather than an estimate.
How do I convert micropascal to millipascal?
Multiply the micropascal value by 0.001. The converter above does this instantly to whatever precision you set.
How do I convert millipascal back to micropascal?
Use the reverse factor: 1 millipascal equals 1,000 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 millipascal?
Millipascal (mPa) is a unit of pressure.
Is the micropascal to millipascal conversion exact?
Yes. Both micropascal and millipascal are defined by fixed standards rather than physical artifacts, so the factor of 0.001 used above is exact to as many digits as you choose to display.