How many psi are in one atm?
One standard atmosphere is about 14.69594878 psi.
Convert Pound per square inch (psi) to Standard atmosphere (atm) instantly.
Formula
value × 0.0680459639099
| Sample | Converted |
|---|---|
| 1 psi | 0.068046 atm |
| 5 psi | 0.34023 atm |
| 10 psi | 0.68046 atm |
| 100 psi | 6.804596 atm |
| 1,000 psi | 68.045964 atm |
Convert pounds per square inch to standard atmospheres by dividing the psi value by about 14.69594878. This shows how a psi gauge or equipment value compares with the fixed standard atmosphere reference.
Psi is common for gauges and equipment, while atm expresses pressure relative to a standard atmospheric reference.
This conversion is useful when a customary pressure value needs to be explained as a multiple of one atmosphere.
A value near 14.7 psi is close to one standard atmosphere.
Use atm for scientific comparison, gas-law context, or classroom explanation rather than everyday gauge work.
If a psi value is gauge pressure, the converted atm value is still based on that same pressure reference.
For actual weather or elevation effects, use measured atmospheric pressure rather than assuming one atm.
Psi is practical for gauges and service documents.
Atmospheres are useful when comparing a pressure with a familiar scientific reference.
Converting psi to atm helps show pressure scale in gas-law, lab, and educational contexts.
One standard atmosphere is exactly 101,325 Pa.
That is about 14.69594878 psi.
The reference is fixed and does not represent changing local weather pressure.
Many psi readings are gauge pressures.
The unit conversion does not add or remove atmospheric pressure.
Confirm whether the source is gauge or absolute before making scientific comparisons.
Definition: Pound per square inch is a pressure unit based on one pound-force applied over one square inch.
History/Origin: Psi became common in US customary pressure measurement and remains widely used on gauges and equipment labels.
Current use: psi is used for tires, compressors, hydraulics, pneumatics, pressure gauges, industrial equipment, and service documentation.
Definition: A standard atmosphere is a pressure unit defined as exactly 101,325 pascals.
History/Origin: The atmosphere unit became useful as a reference for average sea-level air pressure in science and education.
Current use: atm is used in chemistry, gas laws, diving references, laboratory work, classroom problems, and pressure comparisons.
| Pound per square inch [psi] | Standard atmosphere [atm] |
|---|---|
| 0.01 psi | 0.00068 atm |
| 0.1 psi | 0.006805 atm |
| 1 psi | 0.068046 atm |
| 2 psi | 0.136092 atm |
| 5 psi | 0.34023 atm |
| 10 psi | 0.68046 atm |
| 20 psi | 1.360919 atm |
| 50 psi | 3.402298 atm |
| 100 psi | 6.804596 atm |
1 psi = 0.068046 atm
1 atm = 14.695949 psi
Formula: value × 0.0680459639099
Example: 15 psi = 1.020689 atm
Precision note: Use 1 atm = 14.69594878 psi. Preserve decimals when comparing values near atmospheric pressure.
One standard atmosphere is about 14.69594878 psi.
30 psi is about 2.041442 atm.
No. atm is a fixed standard reference, while local air pressure changes with weather and elevation.