Sound Pressure Converter
Sound pressure is the small, rapid variation in air pressure caused by a sound wave. The SI unit is the pascal. Human hearing spans an enormous range: the reference for 0 dB SPL is just 20 micropascals, while painfully loud sounds reach tens of pascals.
1 Pascal = 1,000,000 Micropascal
How to convert Pascal to Micropascal
One Pascal equals 1,000,000 Micropascal, so multiply any value in Pa by 1,000,000 to get µPa. To convert back, divide by 1,000,000 — or multiply by 0.000001.
µPa = Pa × 1,000,000
Example: 25 Pa × 1,000,000 = 25,000,000 µPa.
Pascal to Micropascal table
| Pascal (Pa) | Micropascal (µPa) |
|---|---|
| 1 | 1,000,000 |
| 2 | 2,000,000 |
| 3 | 3,000,000 |
| 4 | 4,000,000 |
| 5 | 5,000,000 |
| 10 | 10,000,000 |
| 15 | 15,000,000 |
| 20 | 20,000,000 |
| 25 | 25,000,000 |
| 50 | 50,000,000 |
| 75 | 75,000,000 |
| 100 | 100,000,000 |
| 250 | 250,000,000 |
| 500 | 500,000,000 |
| 1,000 | 1,000,000,000 |
Micropascal to Pascal table
| Micropascal (µPa) | Pascal (Pa) |
|---|---|
| 1 | 0.000001 |
| 2 | 0.000002 |
| 3 | 0.000003 |
| 4 | 0.000004 |
| 5 | 0.000005 |
| 10 | 0.00001 |
| 15 | 0.000015 |
| 20 | 0.00002 |
| 25 | 0.000025 |
| 50 | 0.00005 |
| 75 | 0.000075 |
| 100 | 0.0001 |
| 250 | 0.00025 |
| 500 | 0.0005 |
| 1,000 | 0.001 |
Sound Pressure units at a glance
All 12 units this converter supports, each expressed in Pascal (Pa) and the other way round.
| Unit | Symbol | 1 unit in Pa | 1 Pa in unit |
|---|---|---|---|
| Pascal | Pa | 1 | 1 |
| Kilopascal | kPa | 1,000 | 0.001 |
| Megapascal | MPa | 1,000,000 | 0.000001 |
| Millipascal | mPa | 0.001 | 1,000 |
| Micropascal | µPa | 0.000001 | 1,000,000 |
| Bar | bar | 100,000 | 0.00001 |
| Millibar | mbar | 100 | 0.01 |
| Microbar (barye) | µbar | 0.1 | 10 |
| Atmosphere | atm | 101,325 | 0.000009869232667 |
| PSI | psi | 6,894.757293 | 0.0001450377377 |
| Torr | Torr | 133.3223684 | 0.007500616827 |
| dB SPL (re 20 µPa) | dB SPL | 0.00002244036909 | 93.97940009 |
Where sound pressure conversions are used
Microphone and hearing measurements, noise regulations, and acoustic engineering.
Frequently asked questions
What is 1 Pascal in Micropascal?
1 Pascal (Pa) is 1,000,000 Micropascal (µPa).
What is 1 Micropascal in Pascal?
1 Micropascal (µPa) is 0.000001 Pascal (Pa).
How do I convert Pascal to Micropascal?
Multiply the value in Pascal by 1,000,000. For example, 5 Pa × 1,000,000 = 5,000,000 µPa. To go the other way, divide by 1,000,000.
How many units does the sound pressure converter support?
It converts between 12 units: Pascal, Kilopascal, Megapascal, Millipascal, Micropascal, Bar, Millibar, Microbar (barye), Atmosphere, PSI, Torr, dB SPL (re 20 µPa).
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Figures on this page are calculated with the same conversion factors as the converter above and shown to up to 10 significant figures. See our disclaimer before relying on a result in a professional or safety-critical context.