How many psi are in one atm?
One standard atmosphere is about 14.69594878 psi.
Convert Standard atmosphere (atm) to Pound per square inch (psi) instantly.
Formula
value × 14.6959487755
| Sample | Converted |
|---|---|
| 1 atm | 14.695949 psi |
| 5 atm | 73.479744 psi |
| 10 atm | 146.959488 psi |
| 100 atm | 1,469.594878 psi |
| 1,000 atm | 14,695.948776 psi |
Convert standard atmospheres to pounds per square inch by multiplying the atm value by about 14.69594878. This expresses an atmosphere-reference pressure in the psi unit used on many gauges and service documents.
atm is useful as a scientific reference, while psi is useful for customary gauges and equipment labels.
This conversion is common when gas-law or lab pressures need to be discussed alongside psi-based service data.
One standard atmosphere is a little under 15 psi.
Use psi when matching gauges or US customary equipment documentation.
Use atm when the relationship to standard atmosphere is the important part of the value.
The conversion does not decide whether a psi value is gauge or absolute; that context must come from the source.
Atmospheres are common in science, but psi is common in many field and service settings.
Converting atm to psi helps compare standard pressure references with gauges, tires, compressors, and pressure equipment.
It is also useful in teaching examples where both units appear.
One standard atmosphere is exactly 101,325 Pa.
That converts to about 14.69594878 psi.
The value is close to 15 psi, but the exact factor should be used when precision matters.
A result of 2 atm is about 29.3919 psi.
That is an absolute pressure reference if the source atm value is absolute.
Do not mix absolute and gauge references when comparing pressure values.
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 pressure in science and education.
Current use: atm is used in chemistry, gas laws, diving references, laboratory work, classroom problems, and pressure 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.
| Standard atmosphere [atm] | Pound per square inch [psi] |
|---|---|
| 0.01 atm | 0.146959 psi |
| 0.1 atm | 1.469595 psi |
| 1 atm | 14.695949 psi |
| 2 atm | 29.391898 psi |
| 5 atm | 73.479744 psi |
| 10 atm | 146.959488 psi |
| 20 atm | 293.918976 psi |
| 50 atm | 734.797439 psi |
| 100 atm | 1,469.594878 psi |
1 atm = 14.695949 psi
1 psi = 0.068046 atm
Formula: value × 14.6959487755
Example: 15 atm = 220.439232 psi
Precision note: Use 1 atm = 14.69594878 psi. Avoid rounding to 15 psi when the result needs technical accuracy.
One standard atmosphere is about 14.69594878 psi.
3 atm is about 44.08784634 psi.
No. 15 psi is a rough approximation; one standard atmosphere is about 14.6959 psi.