Technical atmosphere is kilogram-force per square centimeter.
Technical atmospheres to Atmospheres Converter — at to atm
Convert Technical atmosphere (at) to Atmosphere (atm) using the exact conversion factor (1 technical atmosphere = 0.9678411054 atmosphere). See the formula, worked examples, conversion table, and common uses.
Technical atmospheres to Atmospheres converter
Converter
Pressure Converter
Convert pascals, bars, PSI, atmospheres, mercury columns, water columns, and engineering pressure units.
Context values
Some unit families need one extra value for a physically accurate result.
A standard atmosphere is exactly 101,325 pascals.
Result = input x 98066.5 / 101325.
Pressure uses the pascal as the base unit.
Reserved above the conversion cards and below the converter.
About Converting Technical atmospheres to Atmospheres
Technical atmosphere and Atmosphere both show up on pressure gauges — psi is standard on US tire and tool specifications, while bar is the everyday pressure unit across most of the rest of the world. Specifically: Technical atmosphere is kilogram-force per square centimeter, and a standard atmosphere is exactly 101,325 pascals.
Formula
atmospheres = technical atmospheres × 0.967841105354
This factor comes from each unit's defined relationship to the category's base unit: 1 technical atmosphere equals 98066.5 base units, and 1 atmosphere equals 101325 base units, so dividing one by the other gives the direct technical atmosphere-to-atmosphere factor of 0.967841105354.
Simple example
1 at × 0.9678411054 = 0.9678411054 atm
1 technical atmosphere = 0.9678411054 atmospheres.
Real-world example
35 at × 0.9678411054 = 33.87443869 atm
35 technical atmospheres = 33.87443869 atmospheres.
Conversion table
| Technical atmosphere (at) | Atmosphere (atm) |
|---|---|
| 1 at | 0.9678411054 atm |
| 5 at | 4.839205527 atm |
| 10 at | 9.678411054 atm |
| 25 at | 24.19602763 atm |
| 50 at | 48.39205527 atm |
| 100 at | 96.78411054 atm |
Reverse conversion: Atmosphere to Technical atmosphere
0.9678411054 atm × 1.033227453 = 1 at
0.9678411054 atmospheres = 1 technical atmospheres.
technical atmospheres = atmospheres × 1.0332274528
For a page dedicated to this direction, see Atmosphere to Technical atmosphere.
Understanding the Technical atmosphere (at)
Technical atmosphere is kilogram-force per square centimeter.
Understanding the Atmosphere
Atmosphere (atm) measures pressure. Defined as exactly 101,325 pascals, originally based on the average atmospheric pressure at mean sea level. It is classified as a non-SI unit accepted for use with the SI.
Where it's used: Widely used internationally in chemistry, meteorology, and diving/aviation contexts alongside the pascal and bar
Uses of the Atmosphere today
- Chemistry (standard conditions are often defined at 1 atm)
- Diving and aviation pressure references
- General reference for everyday atmospheric pressure
Atmosphere — sources
- BIPM SI Brochure — Standard atmosphere listed among non-SI units with a fixed exact value in pascals.
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
How many atmospheres are in 1 technical atmosphere?
1 technical atmosphere equals 0.9678411054 atmospheres, using the exact defined conversion factor rather than an estimate.
How do I convert technical atmosphere to atmosphere?
Multiply the technical atmosphere value by 0.9678411054. The converter above does this instantly to whatever precision you set.
How do I convert atmosphere back to technical atmosphere?
Use the reverse factor: 1 atmosphere equals 1.033227453 technical atmospheres. You can also use the swap control in the converter above to flip the direction instantly.
What is a technical atmosphere?
Technical atmosphere (at) is a unit of pressure.
What is a atmosphere?
Atmosphere (atm) measures pressure. Defined as exactly 101,325 pascals, originally based on the average atmospheric pressure at mean sea level. It is classified as a non-SI unit accepted for use with the SI.
Is the technical atmosphere to atmosphere conversion exact?
Yes. Defined as exactly 101,325 pascals, originally based on the average atmospheric pressure at mean sea level. That fixed definition is what the converter above uses, so any rounding you see is a display choice, not a limitation of the math.