Atmospheres to Pascals Converter
Quick answer: To convert atmospheres to pascals, multiply by 101,325. For example, 10 atm is 1,013,250 Pa. One standard atmosphere equals 101,325 Pa.
- Calculator
- Formula
- Examples
- Size compared
- About the units
- Where used
- Step by step
- Popular conversions
- Reading your result
- Mistakes
- FAQ
- Related tools
- Method
Use the Atmospheres to Pascals Converter
Atmospheres to Pascals formula and what each symbol means
Pa = atm × 101,325
| Symbol | Meaning |
|---|---|
| atm | Standard atmosphere |
| Pa | Pascal |
Atmospheres to Pascals examples
1 atm
1 atm × 101,325 = 101,325 Pa.
10 atm
10 atm × 101,325 = 1,013,250 Pa.
100 atm
100 atm × 101,325 = 10,132,500 Pa.
Atmospheres compared with Pascals
One atm is 101,300 times as large as one Pa, so your number gets bigger when you convert atmospheres to pascals and smaller when you convert back. If the answer is not larger than what you typed, you divided instead of multiplying.
About atmospheres and pascals
Standard atmosphere (atm): Standard atmosphere, exactly 101,325 pascals. Pascal (Pa): The SI unit of pressure, one newton per square metre.
Where atmospheres to pascals conversions are used
Hydraulics, boilers and pneumatic tools list their limits in bar, psi or MPa. Tyre pressure is shown in psi, bar or kPa, depending on the vehicle and country.
How to calculate Atmospheres to Pascals step by step
- Enter the value in atm (the starting unit).
- Multiply by 101,325, because 1 atm = 101,325 Pa.
- The product is the value in Pa. To go back, divide by 101,325 or multiply by 0.000009869233.
Popular pressure conversions
How to read your Atmospheres to Pascals result
Quick estimate: multiply by about 100,000 to get pascals from atmospheres; this is within 1.4% of the exact factor. One standard atmosphere is exactly 101,325 Pa, and one bar is exactly 100,000 Pa.
| ATMOSPHERES | PASCALS |
|---|---|
| 1 | 101,325 |
| 2 | 202,650 |
| 5 | 506,625 |
| 10 | 1,013,250 |
| 20 | 2,026,500 |
| 50 | 5,066,250 |
| 100 | 10,132,500 |
| 1,000 | 101,325,000 |
Pascals to Atmospheres: quick table
| PASCALS | ATMOSPHERES |
|---|---|
| 1 | 0.000009869233 |
| 5 | 0.00004934616 |
| 10 | 0.00009869233 |
| 25 | 0.0002467308 |
| 50 | 0.0004934616 |
| 100 | 0.0009869233 |
| 250 | 0.002467308 |
| 500 | 0.004934616 |
Common mistakes when calculating Atmospheres to Pascals
- Reading mmHg and Torr as clearly different units: they differ by only about one part in seven million.
- Dividing when you should multiply: from atm to Pa multiply by 101,325; from Pa to atm divide by 101,325.
Atmospheres to Pascals FAQ
How many Pa are in 1 atm?
1 atm equals 101,325 Pa.
How many atm are in 1 Pa?
1 Pa equals 0.000009869233 atm.
Is 1 atm = 101,325 Pa an exact conversion?
Yes. The standard atmosphere and the pascal are both defined exactly in SI terms, so the ratio has no measurement uncertainty; 101,325 is just that ratio shown to 7 significant figures.
What is a pascal (Pa)?
The SI unit of pressure, one newton per square metre.
How can I estimate atmospheres to pascals in my head?
Quick estimate: multiply by about 100,000 to get pascals from atmospheres; this is within 1.4% of the exact factor.
What is 3 atm in pascals?
3 atm = 303,975 Pa (since 3 × 101,325).
What is 30 atm in pascals?
30 atm = 3,039,750 Pa (since 30 × 101,325).
What is 150 atm in pascals?
150 atm = 15,198,750 Pa (since 150 × 101,325).
How many decimals should I keep when converting atm to Pa?
Match the precision of your original measurement. For example, 1,013,250 Pa rounds to 1,010,000 Pa at 3 significant figures; keep more digits only for engineering or scientific work.
More in Pressure converters
- Bar to kPa Converter
- Atmospheres to Bar Converter
- Bar to mmHg Converter
- PSI to Pascals Converter
- Bar to Pascals Converter
- PSI to mmHg Converter
See all pressure converters tools · All Conversion calculators · Site map
Method, review and disclaimer
Edited by: Hemant Kumar and Anjita Rai, founders of ToolsVault (SEO and content professional, not a licensed adviser). Method: this tool runs in your browser using the formula shown on this page; the numbers you enter are not sent to our servers. Sources: NIST SP 811, Appendix B.8: conversion factors, BIPM: the SI derived units