Atmosphere (std) to Atmosphere (tech) Converter

Pressure Converter

29 units available

Decimals:

From

To

1.033227

1 atm = 1.033227 at

Formula:

at = atm × 1.0332274528

With your value: 1 atm = 1.03322745 at

Other Atmosphere (std) to Atmosphere (tech) conversions

2 atm to at 3 atm to at 4 atm to at 5 atm to at 6 atm to at 7 atm to at 8 atm to at

Atmosphere (std) to Atmosphere (tech) Conversion Table

Atmosphere (std) (atm)	Atmosphere (tech) (at)
0.5	0.516614
1	1.033227
2	2.066455
5	5.166137
10	10.332275
15	15.498412
20	20.664549
25	25.830686
50	51.661373
100	103.322745
250	258.306863
500	516.613726
1000	1,033.227453

Atmosphere (tech) to Atmosphere (std) Conversion Table

Atmosphere (tech) (at)	Atmosphere (std) (atm)
0.5	0.483921
1	0.967841
2	1.935682
5	4.839206
10	9.678411
15	14.517617
20	19.356822
25	24.196028
50	48.392055
100	96.784111
250	241.960276
500	483.920553
1000	967.841105

Where these values come from

Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.

Atmosphere (std) (atm)

Pressure

Exact conversion

The standard atmosphere is exactly 101 325 Pa.

Source: Units accepted for use with the SI, SI Brochure Table 8

Bureau International des Poids et Mesures · Reviewed 2026-07-01

Atmosphere (tech) (at)

Pressure

Exact conversion

Derived from the pascal (1 Pa = 1 N/m²). The standard atmosphere is exactly 101 325 Pa.

Source: NIST Special Publication 811, Guide for the Use of the International System of Units

National Institute of Standards and Technology (US) · Reviewed 2026-07-01

How to Convert Atmosphere (std) to Atmosphere (tech)

To convert from Atmosphere (std) (atm) to Atmosphere (tech) (at), multiply the value by 1.0332274528.

Formula: at = atm × 1.0332274528

Reverse: atm = at × 0.9678411054

Step-by-Step Example

Start with your value in Atmosphere (std). For example: 5 atm
Multiply by the conversion factor: 5 x 1.0332274528
The result is: 5.166137 at

About Atmosphere (std)

One standard atmosphere equals 101,325 Pascals and represents the average air pressure at sea level.

Common uses: diving, weather, chemistry.

About Atmosphere (tech)

The atmosphere (tech) (at) is a unit of pressure and stress. One atmosphere (tech) equals 98066.5 pascals. UnitConvertLab converts it against every other pressure unit using this exact definition, so results are reproducible to full double precision rather than rounded lookup tables.

Common uses: pressure calculations, engineering and science, education.

Frequently Asked Questions

How many Atmosphere (tech) are in 1 Atmosphere (std)?

There are exactly 1.0332274528 Atmosphere (tech) in 1 Atmosphere (std). This means the conversion factor from Atmosphere (std) to Atmosphere (tech) is 1.0332274528.

What is the formula to convert Atmosphere (std) to Atmosphere (tech)?

The formula to convert Atmosphere (std) to Atmosphere (tech) is: at = atm × 1.0332274528. For example, to convert 10 Atmosphere (std) to Atmosphere (tech), you would multiply 10 by 1.0332274528.

What is a Atmosphere (std)?