Convert Pascals to Atmospheres
Convert Pascals to Atmospheres instantly. 1 Pascal (Pa) equals 0.000009869 Atmospheres (atm).
Pascals to Atmospheres conversion table
| Pascals (Pa) | Atmospheres (atm) |
|---|---|
| 1 Pa | 0.000009869 atm |
| 2 Pa | 0.00001974 atm |
| 3 Pa | 0.00002961 atm |
| 5 Pa | 0.00004935 atm |
| 10 Pa | 0.00009869 atm |
| 20 Pa | 0.0001974 atm |
| 50 Pa | 0.0004935 atm |
| 100 Pa | 0.0009869 atm |
| 500 Pa | 0.004935 atm |
| 1,000 Pa | 0.009869 atm |
1 Pascal = 0.000009869 Atmospheres · multiply Pascals by 0.000009869
About converting Pascals to Atmospheres
Pascals (Pa) and Atmospheres (atm) are both units of pressure, so converting between them is a single multiplication: multiply your Pascals figure by 0.000009869. Ten Pascals comes to 0.00009869 Atmospheres, and a hundred works out at 0.0009869 Atmospheres.
Rule of thumb: going from Pascals to Atmospheres divides, so the figure always shrinks — it takes about 101,325 Pascals to make a single Atmosphere. If your answer came out bigger, you have the conversion the wrong way round.
What is a Pascal?
The pascal is the SI unit of pressure: one newton spread over one square metre. It is named after Blaise Pascal, who established that air pressure falls with altitude by having a barometer carried up a mountain. The awkward thing about the unit is its scale — a single pascal is a very small pressure indeed, so honest real-world figures come out enormous, atmospheric pressure alone being about 101,325 of them. That is why hardly anyone works in bare pascals: engineers reach for kilopascals, meteorologists for hectopascals, and industry for the bar.
What is an Atmosphere?
The standard atmosphere is a defined reference rather than a working unit: a figure fixed by agreement at roughly what the air presses at sea level on an ordinary day. Nobody sets a gauge to it. Instead it is the yardstick other pressures are described against — divers count depth in atmospheres, chemists specify reactions at one atmosphere, and test standards quote pressures as multiples of it. Because it is a defined number rather than a measured one, the real pressure outside almost never equals exactly one atmosphere; it wanders with the weather, which is what a barometer is telling you.
To put both in perspective: sea-level air pressure is about 101,325 pascals, while the pressure 10 metres underwater is about 2 atmospheres.
The converter above updates as you type, and the table lists common values for quick reference. Need the opposite direction? Use the Atmospheres to Pascals converter, or browse all Pressure converters.
Frequently asked questions
How many Atmospheres are in one Pascal?
There are 0.000009869 Atmospheres in one Pascal.
How do I convert Pascals to Atmospheres?
Multiply the number of Pascals by 0.000009869. For example, 10 Pascals = 0.00009869 Atmospheres.
What is 100 Pascals in Atmospheres?
100 Pascals is equal to 0.0009869 Atmospheres.
How do I convert Atmospheres to Pascals?
Multiply the Atmospheres value by 101,325 (or divide by 0.000009869).
Is this Pascals to Atmospheres conversion exact?
The definition is exact — Pascals and Atmospheres are both fixed against the same base by international agreement — but the decimal shown here is rounded for readability, because the true ratio does not terminate. For engineering or scientific work, carry more decimal places than this page displays.
What is a Pascal?
The pascal is the SI unit of pressure: one newton spread over one square metre. It is named after Blaise Pascal, who established that air pressure falls with altitude by having a barometer carried up a mountain. The awkward thing about the unit is its scale — a single pascal is a very small pressure indeed, so honest real-world figures come out enormous, atmospheric pressure alone being about 101,325 of them. That is why hardly anyone works in bare pascals: engineers reach for kilopascals, meteorologists for hectopascals, and industry for the bar.
What is an Atmosphere?
The standard atmosphere is a defined reference rather than a working unit: a figure fixed by agreement at roughly what the air presses at sea level on an ordinary day. Nobody sets a gauge to it. Instead it is the yardstick other pressures are described against — divers count depth in atmospheres, chemists specify reactions at one atmosphere, and test standards quote pressures as multiples of it. Because it is a defined number rather than a measured one, the real pressure outside almost never equals exactly one atmosphere; it wanders with the weather, which is what a barometer is telling you.