Pascals to Kilopascals Converter

Pascals to Kilopascals

Convert pascals (Pa) to kilopascals (kPa). Both measure force per area, and the conversion comes up in weather, automotive, diving work.

The Formula

`` kilopascals = pascals × 0.001 pascals = kilopascals × 1000 `

One pascal is 0.001 kilopascals, and one kilopascal is 1,000 pascals.

Conversion Table

Pascals	Kilopascals
1 Pa	0.001 kPa
2 Pa	0.002 kPa
5 Pa	0.005 kPa
10 Pa	0.01 kPa
25 Pa	0.025 kPa
50 Pa	0.05 kPa
100 Pa	0.1 kPa
500 Pa	0.5 kPa
1,000 Pa	1 kPa

The Other Direction

Kilopascals	Pascals
1 kPa	1,000 Pa
2 kPa	2,000 Pa
5 kPa	5,000 Pa
10 kPa	10,000 Pa
25 kPa	25,000 Pa
50 kPa	50,000 Pa
100 kPa	100,000 Pa
500 kPa	500,000 Pa
1,000 kPa	1,000,000 Pa

What Each Unit Is

Pascals (Pa) — one newton per square metre — the SI derived unit of pressure. Named for Blaise Pascal, who established that pressure varies with altitude.

Kilopascals (kPa) — 1,000 pascals. The practical metric working unit for tyre and industrial pressures.

A Sense of Scale

• Atmospheric pressure is 101,325 Pa
• A pascal is a very small unit
• Car tyres run at 220–250 kPa
• Atmospheric pressure is 101.3 kPa

Precision

The factor 0.001 is rounded. For engineering work carry more digits than the table above, and round only at the end — rounding at each step compounds.

In Code

`javascript const pascalToKilopascal = (value) => value * 0.001; ``

Where This Conversion Comes Up

• Weather
• Automotive
• Diving
• Aviation
• HVAC

How Many Decimals Do You Need?

Rounding the factor costs accuracy, and how much depends on the factor. Converting 137 Pa with the factor truncated at each decimal place:

Decimals kept	Factor	137 Pa becomes	Error
0	0	0	100.0000%
1	0	0	100.0000%
2	0	0	100.0000%
3	0.001	0.137	—
4	0.001	0.137	—

A rule that holds for any conversion: round once, at the end. Rounding the factor and then multiplying compounds the error through every subsequent calculation, while carrying full precision and rounding the final answer does not.

The right number of significant figures is set by your input, not by the converter. If you measured pascals to three significant figures, the answer in kilopascals is only good to three — writing more digits claims precision the measurement never had.

Other Conversions From Pascals

The same value in every other unit this converter supports for pressure:

From	To	Unit
1 Pa	1.0000e-5 bar	Bar
1 Pa	9.8692e-6 atm	Atmospheres
1 Pa	1.4504e-4 psi	PSI
1 Pa	0.00750062 mmHg	mmHg

Chaining conversions works — pascals to metres to feet gives the same answer as pascals to feet — but each step rounds, so a chain of three conversions carries three roundings. Convert directly where a direct factor exists.