Atmospheres (standard) to Pounds per square inch Converter
1 atm equals 14.695949 psi, and 1 psi equals 0.068045964 atm. Enter a value in either box to convert atmospheres (standard) to pounds per square inch and back. Formula: pascals = value x unit factor (1 atm = 101,325 Pa, 1 bar = 100,000 Pa, 1 psi = 6,894.757293168 Pa, 1 mmHg = 133.322387415 Pa).
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1 atm = 14.695949 psi
Results shown are estimates for informational purposes only. Nothing on CalcFlow is financial, tax, legal, or medical advice. Always consult a qualified professional before making important decisions.
Atmospheres (standard) to Pounds per square inch Conversion Table
| Atmospheres (standard) | Pounds per square inch |
|---|---|
| 1 atm | 14.695949 psi |
| 5 atm | 73.479744 psi |
| 10 atm | 146.95949 psi |
| 14.7 atm | 216.03045 psi |
| 30 atm | 440.87846 psi |
| 32 atm | 470.27036 psi |
| 100 atm | 1,469.5949 psi |
| 1,000 atm | 14,695.949 psi |
| 5,000 atm | 73,479.744 psi |
Pounds per square inch to Atmospheres (standard) Conversion Table
| Pounds per square inch | Atmospheres (standard) |
|---|---|
| 1 psi | 0.068045964 atm |
| 5 psi | 0.34022982 atm |
| 10 psi | 0.68045964 atm |
| 14.7 psi | 1.0002757 atm |
| 30 psi | 2.0413789 atm |
| 32 psi | 2.1774708 atm |
| 100 psi | 6.8045964 atm |
| 1,000 psi | 68.045964 atm |
| 5,000 psi | 340.22982 atm |
Worked example: 10 atm = 146.95949 psi. A tire at 32 psi is 32 x 0.0689476 = 2.206 bar, which is 220.6 kPa. A blood pressure of 120 mmHg is 16.0 kPa.
Need other units? Open the full Pressure Converter.
Popular Pressure Conversions
Formula
pascals = value x unit factor (1 atm = 101,325 Pa, 1 bar = 100,000 Pa, 1 psi = 6,894.757293168 Pa, 1 mmHg = 133.322387415 Pa)Understanding Pressure Conversion
Pressure is force per area. The SI unit is the pascal, which is tiny, so kilopascals and bar are more common. Tire gauges in the US read pounds per square inch (psi) while much of the world uses bar or kPa. Weather reports use hectopascals or inches of mercury, and blood pressure is measured in millimeters of mercury. Standard atmospheric pressure is exactly 101,325 pascals.
Tips and Best Practices
- 1One bar is about 14.504 psi and 100 kPa.
- 2Standard atmosphere is 14.696 psi, 1.01325 bar or 760 mmHg.
- 3Check whether a gauge reads absolute pressure or gauge pressure (relative to the air around you).
Real-World Example
A tire at 32 psi is 32 x 0.0689476 = 2.206 bar, which is 220.6 kPa. A blood pressure of 120 mmHg is 16.0 kPa.
Common Mistakes to Avoid
- Confusing gauge and absolute pressure, which differ by about 14.7 psi at sea level.
- Mixing kPa and MPa, a factor of 1,000.
- Treating torr and mmHg as different; they agree to within a few parts per billion for practical use.
How to Use
- Type a number in the Atmospheres (standard) box.
- The Pounds per square inch result appears instantly; you can also edit the Pounds per square inch box to convert backwards.
- Use the swap button to reverse the direction and Copy result to copy the answer.
Frequently Asked Questions
How many pounds per square inch are in 1 atm?
How many atmospheres (standard) are in 1 psi?
What is the formula to convert atmospheres (standard) to pounds per square inch?
How many kPa is 1 atm?
Sources: NIST SP 811 (standard atmosphere, psi from lbf and in, conventional mmHg 13,595.1 kg/m3 x g_n); BIPM SI Brochure (bar).