How do you convert hectopascals to kilopascals?

To convert hectopascals (hPa) to kilopascals (kPa), multiply the pressure in hectopascals by 0.1 (kilopascals = hectopascals × 0.1).

What is 5 hectopascals in kilopascals?

5 hectopascals (5 hPa) is equal to 0.5 kilopascals (0.5 kPa).

Which is larger, 1 hectopascal (hPa) or 1 kilopascal (kPa)?

One kilopascal (kPa) is larger than one hectopascal (hPa). Specifically, 1 kPa equals 10 hPa, while 1 hPa is 0.1 kPa.

How do I convert back from kilopascals (kPa) to hectopascals (hPa)?

To reverse the calculation from kPa to hPa, multiply your kilopascal value by the inverse factor 10 (or divide by 0.1). You can also click the Swap button in the tool above to flip directions in one click.

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

For everyday comparisons and quick estimates, rounding to 2 decimal places is usually sufficient (for example, 5 hPa ≈ 0.50 kPa). For engineering, laboratory, or machining specifications, select 4 or 6 decimals—or Scientific (10ⁿ) mode—in the calculator toolbar above.

Hectopascals to Kilopascals Converter

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

Kilopascals to Hectopascals (kPa → hPa)

Convert Hectopascals to Kilopascals

Enter a value in hectopascals (hPa) to convert to kilopascals (kPa).

Value (hPa)

From

Result

•

0.5kilopascals

5 hPa = 0.5 kPa

Result updates automatically

Get Widget

Equivalent Measurements Across UnitsFor 5 hPa

Pascals500 Pa

Kilopascals0.5 kPa

Bars0.005 bar

PSI0.07252 psi

Atmospheres0.00493461 atm

Suggested Conversions

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

[1–3] ↓

Hectopascal to Kilopascal Conversion Table

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

Hectopascals (hPa)	Kilopascals (kPa)
1 hPa	0.1 kPa
2 hPa	0.2 kPa
2.5 hPa	0.25 kPa
5 hPa	0.5 kPa
10 hPa	1 kPa
15 hPa	1.5 kPa
20 hPa	2 kPa
25 hPa	2.5 kPa
30 hPa	3 kPa
50 hPa	5 kPa

How to Convert Hectopascals to Kilopascals

To convert hectopascals to kilopascals, multiply the pressure by the following conversion ratio: 0.1 kilopascals/hectopascal.

Since one hectopascal is equal to 0.1 kilopascals, you can use this simple formula to convert:

kilopascals = hectopascals × 0.1

The pressure in kilopascals is equal to the pressure in hectopascals multiplied by 0.1.

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

kilopascals = (5 hPa × 0.1) = 0.5 kPa

How Many Kilopascals Are in a Hectopascal?

There are 0.1 kilopascals in a hectopascal, which is why we use this value in the formula above.

1 hPa = 0.1 kPa|1 kPa = 10 hPa

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

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

What Is a Hectopascal?

A hectopascal is a unit of pressure equal to 100 pascals (Pa), the base unit for pressure. Equal to 100 Pascals (identical to 1 millibar). [1]

The hectopascal is classified as a metric and SI-compatible unit of pressure. Hectopascals can be abbreviated as hPa; for example, 1 hectopascal can be written as 1 hPa.

In the metric system, "hecto" is the standard SI prefix for hundreds, or 10². This makes the hectopascal (hPa) a convenient decimal multiple of the pascal (Pa).

In practice, hectopascals (hPa) are widely used across standard pressure applications within SI metric workflows, engineering documentation, and technical data sheets.

Learn more about hectopascals in our Pressure Converter.

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). [2]

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.

When converting pressure between hectopascals (hPa) and kilopascals (kPa), keep full floating-point precision (1 hPa = 0.1 kPa; 1 kPa = 10 hPa) during intermediate calculations and round only the final kilopascal figure to match your instrument tolerance.

More Hectopascal & Kilopascal Conversions

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

Convert from Hectopascals

Convert to Kilopascals

Frequently Asked Questions

There are 0.1 kilopascals (kPa) in 1 hectopascal (hPa). Conversely, 1 kilopascal (kPa) is equal to 10 hectopascals (hPa).

Pressure Converter

Quick Info

Direct Factor: 1 hectopascal (hPa) equals 0.1 kilopascals (kPa).
Inverse Factor: 1 kilopascal (kPa) equals 10 hectopascals (hPa).
Formula: kilopascals = hectopascals ÷ 10.
Verified Precision: Anchored to official NIST SP 811 and ISO/IEC 80000 standards.

Units Comparison

Hectopascal (hPa)

Equal to 100 Pascals (identical to 1 millibar).

Kilopascal (kPa)

Equal to 1,000 Pascals (1 kN/m²).

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 — Hectopascals (hPa) to Kilopascals (kPa)
NIST SP 811 Standard
[2]
NIST CUU (Derived SI Unit: Pascal (Pa))·Unit Specifications: Hectopascal (hPa) & Kilopascal (kPa)
NIST CUU Specification
[3]
BIPM (SI Brochure (9th Ed.) — Mechanics)·Conversion Factors & Mathematical Basis (hPa to kPa)
BIPM Reference

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