Convert Technical Atmospheres to Bars
Convert Technical Atmospheres (at) to Bars (bar) instantly and accurately.
Conversion Formula
bar = at × 0.980665
About Technical Atmospheres
One technical atmosphere (at) = exactly 1 kgf/cm² = 98,066.5 Pa ≈ 0.968 standard atmospheres. The metric technical pressure unit used in pre-SI European and Japanese engineering for boilers, hydraulic cylinders, and compressed gas systems. A steam boiler at 10 at operates at 0.981 MPa; hydraulic presses are rated at 200-600 at. Still used parenthetically in old German and Japanese machinery manuals and standards (DIN 1301-3 legacy). Converts simply from kgf/cm²: 1 at ≡ 1 kgf/cm². 1 at = 98,066.5 Pa.
About Bars
A bar = exactly 100,000 Pa ≈ 0.987 atm - the world standard for industrial pressure outside North America. Hydraulic systems, pneumatic equipment, gas cylinders, dive computers, and tyre gauges in Europe and Asia use bar. Scuba diving: +1 bar per 10 m depth; at 40 m recreational limit = 5 bar absolute. European tyre pressure labels show bar alongside kPa. Industrial processes: steam at 10-50 bar; high-pressure reactors 100-300 bar; water-jet cutting 1,000-4,000 bar. 1 bar = 100,000 Pa = 14.504 psi.
Quick Reference Table
| Technical Atmospheres (at) | Bars (bar) |
|---|---|
| 1 at | 0.980665 bar |
| 2 at | 1.96133 bar |
| 5 at | 4.90332 bar |
| 10 at | 9.80665 bar |
| 25 at | 24.5166 bar |
| 50 at | 49.0333 bar |
| 100 at | 98.0665 bar |