14.2233
psi
98,066.5
Pa
14.2233
psi
98,066.5
Pa
The Technical Atmospheres to PSI Converter converts pressure from technical atmospheres (at) to pounds per square inch (PSI). The conversion factor is 1 at = 14.2233 PSI. The technical atmosphere is defined as exactly 1 kilogram-force per square centimeter (1 kgf/cm²) = 98,066.5 Pa.
The technical atmosphere is a legacy pressure unit that was widely used in European and Soviet engineering before the full adoption of SI units. It remains in use in some German (designated 'at' from 'technische Atmosphäre'), Russian, and Eastern European engineering contexts. Equipment manufactured in the former Soviet Union — including pressure vessels, industrial machinery, and military hardware — often has ratings in technical atmospheres.
It is important not to confuse the technical atmosphere (at) with the standard atmosphere (atm). The standard atmosphere (1 atm = 101,325 Pa = 14.6959 PSI) is about 3.3% higher than the technical atmosphere (1 at = 98,066.5 Pa = 14.2233 PSI). The difference arises because the standard atmosphere is defined by Earth's actual average sea-level pressure, while the technical atmosphere is based on the metric gravitational force unit (kgf).
Converting technical atmospheres to PSI is necessary when working with legacy European equipment in American facilities, translating historical engineering documents, or cross-referencing pressure specifications between metric gravitational and US customary systems. Our converter provides Pascal output as well, connecting to the modern SI system.
The formula: PSI = at × 14.2233. The technical atmosphere is defined as 1 kgf/cm² = 9.80665 N/cm² = 98,066.5 Pa. Since 1 PSI = 6,894.757 Pa: 1 at = 98,066.5 / 6,894.757 ≈ 14.2233 PSI.
For Pascals: Pa = at × 98,066.5 (exact).
Key equivalences: 1 at = 14.2233 PSI = 98,066.5 Pa = 0.980665 bar. Compare: 1 atm = 14.6959 PSI = 101,325 Pa = 1.01325 bar. The technical atmosphere is about 3.2% lower than the standard atmosphere. 1 at = 0.9678 atm.
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1 at = 1 kgf/cm² ≈ 14.22 PSI
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10 at ≈ 142 PSI
1 at = 14.2233 PSI. This is about 3.2% less than 1 standard atmosphere (14.6959 PSI).
A technical atmosphere (at) is defined as 1 kilogram-force per square centimeter (1 kgf/cm²). It equals 98,066.5 Pascals or 0.980665 bar.
at (technical atmosphere) = 1 kgf/cm² = 98,066.5 Pa. atm (standard atmosphere) = 101,325 Pa. The atm is about 3.3% higher than at.
Primarily in legacy European (especially German) and former Soviet engineering. Old equipment, historical documents, and some current Eastern European specifications still use this unit.
Yes, 1 at = 1 kgf/cm² exactly. The technical atmosphere is simply another name for the kilogram-force per square centimeter.
It was a convenient metric-gravitational unit — the pressure of 1 kg mass on 1 cm². It predates the SI system and was practical for engineering calculations using the metric system.
1 at = 0.980665 bar (since 1 bar = 100,000 Pa and 1 at = 98,066.5 Pa). They are close but not identical — the bar is about 2% higher.
It has been largely replaced by SI units (Pa, kPa, MPa, bar) in most countries. However, it persists in some industrial contexts, especially where legacy equipment is still in operation.
Multiply by 0.980665. For example, 5 at = 4.903 bar. Alternatively, note that 1 at ≈ 0.981 bar.
10 at = 142.233 PSI. This is a moderate pressure found in some hydraulic and pneumatic systems.
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