Convert Pounds per Square Inch to Atmospheres
Instantly convert Pounds per Square Inch (psi) to Atmospheres (atm) with our free online calculator.
Formula: psi to atm — multiply by 0.068046
Reference Table
| Pounds per Square Inch (psi) | Atmospheres (atm) |
|---|---|
| 1 | 0.068046 |
| 5 | 0.34023 |
| 10 | 0.68046 |
| 25 | 1.70115 |
| 50 | 3.4023 |
| 100 | 6.8046 |
How to Convert Pounds per Square Inch to Atmospheres
Formula
To convert Pounds per Square Inch (psi) to Atmospheres (atm): multiply by 0.068046
Step-by-Step
- Start with your value in Pounds per Square Inch (psi).
- Multiply by 0.068046 to perform the conversion.
- The result is your value expressed in Atmospheres (atm).
Conversion Factor
1 psi = 0.068046 atm
Reverse Factor
1 atm = 14.6959 psi
Worked Example
Convert 25 Pounds per Square Inch to Atmospheres: 25 psi = 1.70115 atm
About Pound per Square Inch (psi)
An imperial unit of pressure equal to one pound-force applied over one square inch (about 6,895 Pa). PSI is the dominant US pressure unit: tire inflation (32–35 psi for most cars), compressed air systems, hydraulic equipment, firearms ammunition chamber pressures, and municipal water supply. US engineering textbooks and specifications for valves, pumps, and pipes are still written in psi. Converting psi to kPa (×6.895) or psi to bar (÷14.504) are the most common US-to-metric pressure conversions.
About Atmosphere (atm)
A non-SI unit of pressure defined as 101,325 pascals exactly, corresponding to standard sea-level atmospheric pressure. Atmospheres are widely used in chemistry (reaction pressures), diving (depth in multiples of atmospheric pressure), and pressure-sensitive materials research. 1 atm = 1.01325 bar and is slightly different from the "technical atmosphere" (at, 98,066.5 Pa) used in some legacy European engineering — a known source of confusion in older textbooks.
Quick Facts
- 1 Pound per Square Inch equals 0.068046 Atmospheres
- 1 Atmosphere equals 14.6959 Pounds per Square Inch
- Pound per Square Inch is a unit of pressure
- Atmosphere is a unit of pressure
- This conversion is commonly used in tire inflation, weather reporting, scuba diving, and engineering
- The Pound per Square Inch belongs to the imperial system
Common Pound per Square Inch to Atmosphere Conversions
| Pounds per Square Inch (psi) | Atmospheres (atm) |
|---|---|
| 0.1 | 0.0068046 |
| 0.5 | 0.034023 |
| 1 | 0.068046 |
| 2 | 0.136092 |
| 5 | 0.34023 |
| 10 | 0.68046 |
| 14.696 | 1 |
| 15 | 1.02069 |
| 20 | 1.36092 |
| 25 | 1.70115 |
| 50 | 3.4023 |
| 100 | 6.8046 |
| 150 | 10.2069 |
| 200 | 13.6092 |
| 500 | 34.023 |
| 1000 | 68.046 |
Understanding Pounds per Square Inch
The Pound per Square Inch (symbol: psi) is a unit of pressure. An imperial unit of pressure equal to one pound-force applied over one square inch (about 6,895 Pa). PSI is the dominant US pressure unit: tire inflation (32–35 psi for most cars), compressed air systems, hydraulic equipment, firearms ammunition chamber pressures, and municipal water supply. US engineering textbooks and specifications for valves, pumps, and pipes are still written in psi. Converting psi to kPa (×6.895) or psi to bar (÷14.504) are the most common US-to-metric pressure conversions.
It belongs to the imperial measurement system.
Pounds per Square Inch are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Understanding Atmospheres
The Atmosphere (symbol: atm) is a unit of pressure. A non-SI unit of pressure defined as 101,325 pascals exactly, corresponding to standard sea-level atmospheric pressure. Atmospheres are widely used in chemistry (reaction pressures), diving (depth in multiples of atmospheric pressure), and pressure-sensitive materials research. 1 atm = 1.01325 bar and is slightly different from the "technical atmosphere" (at, 98,066.5 Pa) used in some legacy European engineering — a known source of confusion in older textbooks.
Atmospheres are commonly used in tire inflation, weather reporting, scuba diving, and engineering.
Why Convert Pounds per Square Inch to Atmospheres?
Engineers, mechanics, and scientists frequently need to convert pressure between Pounds per Square Inch and Atmospheres when working with different measurement standards. Tire pressure, blood pressure readings, weather barometric measurements, and industrial process specifications may all use different pressure units depending on the region or discipline. Reliable conversion prevents equipment misuse and ensures safety.
Frequently Asked Questions
How do I convert Pounds per Square Inch to Atmospheres?
An imperial unit of pressure equal to one pound-force applied over one square inch (about 6,895 Pa). To convert Pounds per Square Inch to Atmospheres, multiply by 0.068046. For example, 25 psi equals 1.70115 atm.
How many Atmospheres are in 1 Pound per Square Inch?
There are 0.068046 Atmospheres in 1 Pound per Square Inch.
How many Pounds per Square Inch are in 1 Atmosphere?
There are 14.6959 Pounds per Square Inch in 1 Atmosphere.
What is the formula for Pound per Square Inch to Atmosphere conversion?
The formula is: multiply by 0.068046. This means 1 psi = 0.068046 atm.
Is a Pound per Square Inch bigger than a Atmosphere?
Yes. One Pound per Square Inch is larger than one Atmosphere because 1 psi equals 0.068046 atm, which is less than 1.
When do you need to convert between Pounds per Square Inch and Atmospheres?
A non-SI unit of pressure defined as 101,325 pascals exactly, corresponding to standard sea-level atmospheric pressure. Pound per Square Inch and Atmosphere are both pressure units, so conversion comes up whenever one source of information uses one unit and another uses the other — a classic cross-reference challenge in engineering, trade, travel, and everyday life.