Kilopascal to Bar Converter
Enter the value that you want to convert kilopascal (kPa) to bar or bar to kilopascal.
1 kilopascal = 0.0100000 bar
Formula: bar = kilopascal value × 0.0100000
kilopascal to bar
10 kilopascal = 0.10000 bar
Popular Pressure Converters:
Kilopascal vs Bar
The Kilopascal in Engineering
Kilopascal (kPa) is a unit of pressure measurement. 1 kilopascal is equal to 0.0100000 bar.
The Bar in Engineering
Bar (bar) is a unit of pressure measurement. 1 bar is equal to 100.0000000 kilopascal.
Pressure Units Across Industries
Pressure measurements vary dramatically by industry. Meteorologists report in millibars or hectopascals, tire shops use PSI, scuba divers think in atmospheres or bar, vacuum engineers work in torr, and hydraulic systems specify in megapascals. A single industrial plant might encounter all these units across different equipment manuals, safety datasheets, and regulatory standards from different countries.
kilopascal to bar metric conversion table
| 0.01 kPa | = | 0.00010 bar |
| 0.1 kPa | = | 0.00100 bar |
| 1 kPa | = | 0.01000 bar |
| 2 kPa | = | 0.02000 bar |
| 3 kPa | = | 0.03000 bar |
| 4 kPa | = | 0.04000 bar |
| 5 kPa | = | 0.05000 bar |
| 6 kPa | = | 0.06000 bar |
| 7 kPa | = | 0.07000 bar |
| 8 kPa | = | 0.08000 bar |
| 9 kPa | = | 0.09000 bar |
| 10 kPa | = | 0.10000 bar |
| 11 kPa | = | 0.11000 bar |
| 12 kPa | = | 0.12000 bar |
| 13 kPa | = | 0.13000 bar |
| 14 kPa | = | 0.14000 bar |
| 15 kPa | = | 0.15000 bar |
| 16 kPa | = | 0.16000 bar |
| 17 kPa | = | 0.17000 bar |
| 18 kPa | = | 0.18000 bar |
| 19 kPa | = | 0.19000 bar |
| 20 kPa | = | 0.20000 bar |
| 30 kPa | = | 0.30000 bar |
| 40 kPa | = | 0.40000 bar |
| 50 kPa | = | 0.50000 bar |
| 60 kPa | = | 0.60000 bar |
| 70 kPa | = | 0.70000 bar |
| 80 kPa | = | 0.80000 bar |
| 90 kPa | = | 0.90000 bar |
| 100 kPa | = | 1.00000 bar |
| 200 kPa | = | 2.00000 bar |
| 300 kPa | = | 3.00000 bar |
| 400 kPa | = | 4.00000 bar |
| 500 kPa | = | 5.00000 bar |
| 600 kPa | = | 6.00000 bar |
| 700 kPa | = | 7.00000 bar |
| 800 kPa | = | 8.00000 bar |
| 900 kPa | = | 9.00000 bar |
| 1000 kPa | = | 10.00000 bar |
How to Convert Kilopascal to Bar?
We can convert kilopascal to bar by using an example.
Example:
Convert 20 Kilopascal to Bar?
We know 1 Kilopascal = 0.0100000 bar; 1 Bar = 100.0000000 kilopascal.
20 kilopascal = ___bar
20 × 0.0100000 = 0.20000 bar (we know 1 kilopascal = 0.0100000 bar)
Answer:
20 kilopascal = 0.20000 bar
How to Convert kPa to Bar (Step-by-Step)
Converting kilopascals to bar is routine in process control and boiler specifications. The relationship is exact: 1 bar = 100 kPa, so you simply divide by 100.
- Write down the pressure value in kilopascals (kPa).
- Divide the kPa value by 100.
- The result is the equivalent pressure in bar.
- Verify: since 1 bar = 100 kPa, your bar value should always be 1/100th of the kPa value.
Common kPa to Bar Conversions
Reference values encountered in boiler ratings, process instrumentation, and HVAC system specifications.
| Kilopascal | Bar |
|---|---|
| 100 kPa | 1.00 bar |
| 200 kPa | 2.00 bar |
| 350 kPa | 3.50 bar |
| 600 kPa | 6.00 bar |
| 700 kPa | 7.00 bar |
| 1000 kPa | 10.00 bar |
| 1600 kPa | 16.00 bar |
| 4000 kPa | 40.00 bar |
Solved Examples: kPa to Bar
Question 1: A boiler safety valve is set to relieve at 850 kPa. What is this in bar?
Solution:
Pressure in bar = Pressure in kPa ÷ 100
= 850 ÷ 100
= 8.50 bar
Answer: 850 kPa = 8.50 bar — a typical setting for a low-pressure steam boiler.
Question 2: A process transmitter reads 1275 kPa. Convert to bar for the control system display.
Solution:
Pressure in bar = 1275 ÷ 100
= 12.75 bar
Answer: 1275 kPa = 12.75 bar.
Question 3: The design pressure of a heat exchanger is 2500 kPa. Express in bar.
Solution:
Pressure in bar = 2500 ÷ 100
= 25.00 bar
Answer: 2500 kPa = 25.00 bar — common for shell-and-tube exchangers.
Practice Questions: kPa to Bar
Try solving these on your own to test your understanding:
- Convert 450 kPa to bar. (Answer: 4.50 bar)
- A pressure sensor reads 1380 kPa. What is this in bar? (Answer: 13.80 bar)
- Convert 75 kPa to bar. (Answer: 0.75 bar)
- A boiler operates at 3200 kPa. Express in bar. (Answer: 32.00 bar)
- Convert 101.325 kPa to bar. (Answer: 1.01325 bar ≈ 1 atm)
kPa vs Bar in Boiler Pressure Ratings
Boiler nameplates in countries following EN standards typically show maximum allowable working pressure (MAWP) in bar, while engineering calculations and P&ID documentation often use kPa. Australian AS standards and many Asian codes specify kPa. The conversion is trivial (÷100), but misreading units on a boiler certificate can lead to dangerous over-pressurization. Always confirm which unit appears on the nameplate before setting relief valves.
Process Control Instrumentation: kPa and Bar Ranges
Industrial pressure transmitters (like Rosemount 3051 or Yokogawa EJA) are often calibrated in kPa but display in bar on SCADA screens. Common transmitter ranges: 0-100 kPa (0-1 bar) for low-pressure draft measurement, 0-1600 kPa (0-16 bar) for water systems, and 0-4000 kPa (0-40 bar) for process steam. When configuring a 4-20 mA signal, ensure your zero and span match the same unit throughout the loop.
Key Takeaways
- Divide kPa by 100 to get bar (exact relationship: 1 bar = 100 kPa).
- Moving the decimal two places left converts kPa to bar instantly.
- Boiler ratings often require conversion between kPa (calculations) and bar (nameplates).
- Process transmitters commonly bridge both units in control loops.
- 101.325 kPa = 1.01325 bar = 1 standard atmosphere.
- PN ratings for pipe flanges (PN10, PN16, PN25) correspond directly to bar values.
Kilopascal to Bar Conversion Formula
bar = kilopascal × 0.0100000
1 kilopascal = 0.0100000 bar
1 bar = 100.0000000 kilopascal
Reverse: kilopascal = bar × 100.0000000
Frequently Asked Questions
How many bar are in 1 kilopascal?
There are 0.0100000 bar in 1 kilopascal. To convert kilopascal to bar, multiply the value by 0.0100000.
How do I convert kilopascal to bar?
Multiply your kilopascal value by 0.0100000 to get the equivalent in bar. For example, 5 kilopascal = 5 × 0.0100000 = 0.05000 bar.
How do I convert bar to kilopascal?
Multiply your bar value by 100.0000000 to get the equivalent in kilopascal. Alternatively, divide by 0.0100000.
What is 10 kilopascal in bar?
10 kilopascal is equal to 0.10000 bar.
What is 100 kilopascal in bar?
100 kilopascal is equal to 1.00000 bar.