How do you convert kilopascals to atmospheres?

To convert kilopascals (kPa) to atmospheres (atm), multiply the pressure in kilopascals by 0.00986923 (atmospheres = kilopascals × 0.00986923).

What is 5 kilopascals in atmospheres?

5 kilopascals (5 kPa) is equal to 0.04935 atmospheres (0.04935 atm).

Which is larger, 1 kilopascal (kPa) or 1 standard atmosphere (atm)?

One standard atmosphere (atm) is larger than one kilopascal (kPa). Specifically, 1 atm equals 101.325 kPa, while 1 kPa is 0.00986923 atm.

How do I convert back from atmospheres (atm) to kilopascals (kPa)?

To reverse the calculation from atm to kPa, multiply your standard atmosphere value by the inverse factor 101.325 (or divide by 0.00986923). You can also click the Swap button in the tool above to flip directions in one click.

How many decimal places should I round kPa to atm results to?

For everyday comparisons and quick estimates, rounding to 2 decimal places is usually sufficient (for example, 5 kPa ≈ 0.05 atm). For engineering, laboratory, or machining specifications, select 4 or 6 decimals—or Scientific (10ⁿ) mode—in the calculator toolbar above.

Kilopascals to Atmospheres Converter

Enter the pressure in kilopascals below to convert it to atmospheres.

Atmospheres to Kilopascals (atm → kPa)

Convert Kilopascals to Atmospheres

Enter a value in kilopascals (kPa) to convert to atmospheres (atm).

Value (kPa)

From

Result

•

0.049346163atmospheres

5 kPa = 0.049346163 atm

Result updates automatically

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Equivalent Measurements Across UnitsFor 5 kPa

Pascals5,000 Pa

Bars0.05 bar

PSI0.72519 psi

Atmospheres0.04935 atm

Suggested Conversions

Reference:NIST SP 811 (NIST SP 811 App. B.9 (Pressure & Stress))

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Kilopascal to Standard Atmosphere Conversion Table

Table showing various kilopascal measurements converted to atmospheres. Click any preset value or arrow to load it into the converter.

Kilopascals (kPa)	Atmospheres (atm)
1 kPa	0.0098692 atm
2 kPa	0.0197385 atm
2.5 kPa	0.0246731 atm
5 kPa	0.0493462 atm
10 kPa	0.0986923 atm
15 kPa	0.1480385 atm
20 kPa	0.1973847 atm
25 kPa	0.2467308 atm
30 kPa	0.296077 atm
50 kPa	0.4934616 atm

How to Convert Kilopascals to Atmospheres

To convert kilopascals to atmospheres, multiply the pressure by the following conversion ratio: 0.0098692 atmospheres/kilopascal.

Since one kilopascal is equal to 0.0098692 atmospheres, you can use this simple formula to convert:

atmospheres = kilopascals × 0.0098692

The pressure in atmospheres is equal to the pressure in kilopascals multiplied by 0.0098692.

For example, here's how to convert 5 kilopascals to atmospheres using the formula above.

atmospheres = (5 kPa × 0.0098692) = 0.0493462 atm

How Many Atmospheres Are in a Kilopascal?

There are 0.0098692 atmospheres in a kilopascal, which is why we use this value in the formula above.

1 kPa = 0.0098692 atm|1 atm = 101.325 kPa

Our kilopascal to standard atmosphere calculator automatically converts your pressure measurements with full decimal and scientific precision across US customary, imperial, and SI metric standards.

Kilopascals and atmospheres are both units used to measure pressure. Keep reading to learn more about each unit.

What Is a Kilopascal?

A kilopascal is a unit of pressure equal to 1,000 pascals (Pa), the base unit for pressure. Equal to 1,000 Pascals (1 kN/m²). [1]

The kilopascal is classified as a metric and SI-compatible unit of pressure. Kilopascals can be abbreviated as kPa; for example, 1 kilopascal can be written as 1 kPa.

In the metric system, "kilo" is the standard SI prefix for thousands, or 10³. This makes the kilopascal (kPa) a convenient decimal multiple of the pascal (Pa).

In practice, kilopascals (kPa) are widely used across large-scale industrial, bulk, and macro-level pressure specifications within SI metric workflows, engineering documentation, and technical data sheets.

Learn more about kilopascals in our Pressure Converter.

What Is a Standard Atmosphere?

A standard atmosphere is a unit of pressure equal to 101,325 pascals (Pa), the base unit for pressure. Standard sea-level atmospheric pressure defined as 101,325 Pascals. [2]

The standard atmosphere is classified as a standard unit of pressure. Atmospheres can be abbreviated as atm; for example, 1 standard atmosphere can be written as 1 atm.

When working with atmospheres (atm) in formulas or technical specifications, always verify whether your target system uses SI metric, US customary, or British imperial standards.

In practice, atmospheres (atm) are widely used across large-scale industrial, bulk, and macro-level pressure specifications within international standard workflows, engineering documentation, and technical data sheets.

Learn more about atmospheres in our Pressure Converter.

When converting pressure between kilopascals (kPa) and atmospheres (atm), keep full floating-point precision (1 kPa = 0.0098692 atm; 1 atm = 101.325 kPa) during intermediate calculations and round only the final standard atmosphere figure to match your instrument tolerance.

More Kilopascal & Standard Atmosphere Conversions

Need to calculate in the opposite direction? Use our atmospheres to kilopascals calculator to switch your starting unit immediately. You can also explore related tools such as converting atmospheres to kilopascals, converting bars to atmospheres, or converting torr to atmospheres.

Convert from Kilopascals

Convert to Atmospheres

Frequently Asked Questions

There are 0.00986923 atmospheres (atm) in 1 kilopascal (kPa). Conversely, 1 standard atmosphere (atm) is equal to 101.325 kilopascals (kPa).

Pressure Converter

Quick Info

Direct Factor: 1 kilopascal (kPa) equals 0.00986923 atmospheres (atm).
Inverse Factor: 1 standard atmosphere (atm) equals 101.325 kilopascals (kPa).
Formula: atmospheres = kilopascals × 0.00986923.
Verified Precision: Anchored to official NIST SP 811 and ISO/IEC 80000 standards.

Units Comparison

Kilopascal (kPa)

Equal to 1,000 Pascals (1 kN/m²).

Standard Atmosphere (atm)

Standard sea-level atmospheric pressure defined as 101,325 Pascals.

Pascal (Pa)

SI derived unit of pressure equal to 1 Newton per square meter (N/m²).

References

[1]NIST SP 811 · NIST SP 811 App. B.9 (Pressure & Stress)
Source
[2]NIST CUU · Derived SI Unit: Pascal (Pa)
Source
[3]BIPM · SI Brochure (9th Ed.) — Mechanics
Source

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References

NIST · BIPM · ISO

[1]
NIST SP 811 (NIST SP 811 App. B.9 (Pressure & Stress))·Pressure Metrology Standard — Kilopascals (kPa) to Atmospheres (atm)
NIST SP 811 Standard
[2]
NIST CUU (Derived SI Unit: Pascal (Pa))·Unit Specifications: Kilopascal (kPa) & Standard Atmosphere (atm)
NIST CUU Specification
[3]
BIPM (SI Brochure (9th Ed.) — Mechanics)·Conversion Factors & Mathematical Basis (kPa to atm)
BIPM Reference

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