Atmosphere (tech) to Hectopascal Converter

Pressure Converter

29 units available

Decimals:

From

To

980.665

1 at = 980.665 hPa

Formula:

hPa = at × 980.665

With your value: 1 at = 980.665 hPa

Other Atmosphere (tech) to Hectopascal conversions

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

Atmosphere (tech) to Hectopascal Conversion Table

Atmosphere (tech) (at)	Hectopascal (hPa)
0.5	490.3325
1	980.665
2	1,961.33
5	4,903.325
10	9,806.65
15	14,709.975
20	19,613.3
25	24,516.625
50	49,033.25
100	98,066.5
250	245,166.25
500	490,332.5
1000	980,665

Hectopascal to Atmosphere (tech) Conversion Table

Hectopascal (hPa)	Atmosphere (tech) (at)
0.5	0.00051
1	0.00102
2	0.002039
5	0.005099
10	0.010197
15	0.015296
20	0.020394
25	0.025493
50	0.050986
100	0.101972
250	0.254929
500	0.509858
1000	1.019716

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 (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

Hectopascal (hPa)

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 (tech) to Hectopascal

To convert from Atmosphere (tech) (at) to Hectopascal (hPa), multiply the value by 980.665.

Formula: hPa = at × 980.665

Reverse: at = hPa × 0.0010197162

Step-by-Step Example

Start with your value in Atmosphere (tech). For example: 5 at
Multiply by the conversion factor: 5 x 980.665
The result is: 4,903.325 hPa

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.

About Hectopascal

The hectopascal (hPa) is a unit of pressure and stress. One hectopascal equals 100 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 Hectopascal are in 1 Atmosphere (tech)?

There are exactly 980.665 Hectopascal in 1 Atmosphere (tech). This means the conversion factor from Atmosphere (tech) to Hectopascal is 980.665.

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

The formula to convert Atmosphere (tech) to Hectopascal is: hPa = at × 980.665. For example, to convert 10 Atmosphere (tech) to Hectopascal, you would multiply 10 by 980.665.

What is a Atmosphere (tech)?