Technical Atmosphere to Bar Converter
Enter a pressure in technical atmospheres to convert to bar.
Result
How to use
- Enter your values in the fields above.
- Press Calculate to see your result instantly.
- Use the Share button to copy a link to your result.
About this calculator
The technical atmosphere (at) is an older metric pressure unit defined as exactly 1 kilogram-force per square centimetre (kgf/cm²), predating the SI pascal and bar. Because 1 kgf = 9.80665 N acting over 1 cm², 1 at = 98,066.5 Pa = 0.980665 bar — almost, but not quite, equal to a standard atmosphere (1 atm = 1.01325 bar).
The unit still shows up on older or Eastern-European-made pressure gauges, boiler and compressor nameplates, and hydraulic system specs, so mechanics and industrial technicians reading legacy equipment need to convert it to the bar or psi values used on modern instruments.
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