Kilopascal to Bar Converter

Convert kilopascals to bar instantly with our free online tool. Ideal for European machinery specs, scuba tanks, and CO2 regulators. Accurate kPa to bar results.

Pressure Converter

1 kpa = 0.01 bar

The quick answer for 1 Kilopascal — type any value below for the exact result

Enter Kilopascal

kpa

Kilopascal

Result in Bar

bar

Bar

Kilopascal to Bar Conversion Formula

To convert kilopascals to bar, divide the kPa value by 100. One kilopascal equals 1,000 pascals and one bar is defined as exactly 100,000 pascals, so 1 kPa = 0.01 bar exactly.

1 kpa = 0.01 bar

Kilopascal and Bar Explained

Kilopascal (kpa)

The kilopascal (kPa) is the SI pressure unit equal to 1,000 pascals — a thousand newtons of force spread over one square meter. It is the native unit of industrial sensors, medical device specs, and engineering documentation, with everyday pressures landing in tidy hundreds: sea-level air at 101.325 kPa, passenger tires at 220 kPa, hydraulic lines in the tens of thousands. Because it chains directly to other SI units, one kPa reading serves calculation and compliance alike.

Where it is used: Kilopascals dominate sensor readouts, SI engineering datasheets, international plumbing codes, and medical device documentation worldwide.

Origin: The prefix kilo attached to the pascal after the unit became the SI pressure standard in 1971, giving engineers a humane alternative to raw pascals.

Bar (bar)

The bar is a metric pressure unit defined as exactly 100,000 pascals — conveniently close to standard atmospheric pressure (1.01325 bar), which is why it feels intuitive on gauges. European machinery nameplates, scuba equipment, tire stickers, and CO2 regulators are all scaled in bar, with familiar anchors like 2.3 bar tires, 9 bar espresso, and 200 bar dive cylinders. Though not an SI unit, it is accepted for use alongside SI and remains the working language of European pressure hardware.

Where it is used: Bar is the default gauge unit across Europe and the dive industry — machinery ratings, compressor dials, tire stickers, and carbonation regulators.

Origin: Named after the Greek baros (weight) by Norwegian meteorologist Vilhelm Bjerknes around 1909, the bar was later pinned to exactly 100 kPa to keep meteorology and engineering on one scale.

Kilopascal to Bar Conversion Table

Kilopascal (kpa)	Bar (bar)
1 kpa	0.01 bar
2 kpa	0.02 bar
5 kpa	0.05 bar
10 kpa	0.1 bar
20 kpa	0.2 bar
50 kpa	0.5 bar
70 kpa	0.7 bar
100 kpa	1 bar
101.325 kpa	1.01325 bar
150 kpa	1.5 bar
200 kpa	2 bar
220 kpa	2.2 bar
250 kpa	2.5 bar
300 kpa	3 bar
350 kpa	3.5 bar
400 kpa	4 bar
450 kpa	4.5 bar
600 kpa	6 bar
900 kpa	9 bar
1000 kpa	10 bar

Bar to Kilopascal Conversion Table

Bar (bar)	Kilopascal (kpa)
0.1 bar	10 kpa
0.2 bar	20 kpa
0.5 bar	50 kpa
0.7 bar	70 kpa
1 bar	100 kpa
1.5 bar	150 kpa
2 bar	200 kpa
2.3 bar	230 kpa
2.5 bar	250 kpa
3 bar	300 kpa
4 bar	400 kpa
5 bar	500 kpa
9 bar	900 kpa
10 bar	1000 kpa

Kilopascal to Bar in Everyday Objects

Common real-world examples that make Kilopascal and Bar easy to picture at a glance.

	Kilopascal (kpa)	Bar (bar)
A European car tire	230 kpa	2.3 bar
An espresso machine pump	900 kpa	9 bar
A full scuba cylinder	20000 kpa	200 bar
Standard sea-level air	101.325 kpa	1.01325 bar
A hydraulic excavator line	35000 kpa	350 bar
A home carbonation peak	400 kpa	4 bar
A track-cycling tire	800 kpa	8 bar

When You Need Kilopascal to Bar Conversions

European Machinery Acceptance

An ISO test sheet requires 350 bar on the main hydraulic line while the bench transducer logs 35,000 kPa — enter either figure to confirm the run met spec.

Home Carbonation Setup

A CO2 regulator dialed to 2.5 bar for cold fridge carbonation reads 250 kPa on the inline gauge; convert once and mark both scales on the keg collar.

Scuba Fill Verification

A European fill station charges cylinders to 200 bar (20,000 kPa) while your dive computer logs kPa — convert at the counter before logging the dive profile.

Imported Appliance Hookup

A European espresso machine specifies a 9 bar (900 kPa) pump; verify the installer's kPa gauge matches before the first shot, since mains fluctuations show up in kPa first.

Related Pressure Conversions

Atmosphere to Pascal Converter

Atmosphere → Pascal

Pascal to Atmosphere Converter

Pascal → Atmosphere

PSI to Kilopascal Converter

PSI → Kilopascal

Kilopascal to PSI Converter

Kilopascal → PSI

mmHg to Pascal Converter

mmHg → Pascal

PSI to Atmosphere Converter

PSI → Atmosphere

Bar to Pascal Converter

Bar → Pascal

How to Use

1

Enter kPa Value

Type the kilopascal reading — typical entries include tire pressure (220-250 kPa), pump discharge (600 kPa), and industrial sensors (up to 35,000 kPa)
2

View Bar Result

The bar equivalent appears instantly. For example, 450 kPa converts to 4.5 bar
3

Copy or Swap

Copy the result or click Swap to convert bar back to kilopascals
4

Cross-Check the Spec Sheet

Compare against the nameplate: European machinery usually rates in bar (e.g. a 350 bar hydraulic line = 35,000 kPa on the sensor)

Why Use Be Converter?

Instant Conversion

Get precise kPa to bar results in real-time as you type — perfect for machine datasheets and gauge cross-checks

Exact Metric Relation

The conversion is definitionally exact: 1 bar = 100,000 Pa and 1 kPa = 1,000 Pa, so every result is a clean two-decimal shift

Conversion Table

Quick reference with common values like 220 kPa (2.2 bar), 600 kPa (6 bar), and 20,000 kPa (200 bar)

Bidirectional

Easily swap between kilopascals and bar with one click for reverse conversions

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Frequently Asked Questions

How many bar is 1 kPa?

1 kPa equals 0.01 bar exactly — the relationship is a clean metric shift because 1 bar is defined as 100,000 pascals and 1 kPa is 1,000 pascals.

What is 220 kPa in bar?

220 kPa ÷ 100 = 2.2 bar — the typical cold tire pressure on a European sticker, matching the 32 PSI printed for the same car in North America.

What is the difference between kPa and bar?

Both are metric: the kilopascal is the SI pressure unit (1,000 Pa) used in engineering documentation and medical devices, while bar (100,000 Pa) is the conventional unit on European gauges, scuba gear, and tire stickers. They differ only by a factor of 100.

How do I convert machinery specs from kPa to bar?

Divide kPa by 100. A hydraulic test pressure of 35,000 kPa is 350 bar, a pneumatic line at 600 kPa is 6 bar, and a filter warning at 70 kPa is 0.7 bar.

How many kPa are in 1 bar?

Exactly 100 kPa. So a full scuba cylinder at 200 bar holds 20,000 kPa, and an espresso machine brewing at 9 bar pumps at 900 kPa.

How many bar is 250 kPa?

250 kPa = 2.5 bar, a common tire pressure for compact cars and EVs on European door stickers.

Is 1 bar exactly 100 kPa or an approximation?

It is exact by definition: the bar was set to exactly 100,000 pascals. Only the atmosphere (101,325 Pa = 1.01325 bar) is a measured quantity, not a definition.

Why do weather maps use hPa instead of kPa or bar?

Sea-level pressure is about 1,013 hPa — the same magnitude meteorologists recorded for decades in millibar before the rename (1 hPa = 1 mbar = 0.1 kPa). Maps kept the tradition while engineering moved to kPa and bar.

About Kilopascal to Bar Converter

Our free online kilopascal to bar converter links the SI unit on sensor readouts and datasheets with the bar figures on European gauges, machinery nameplates, and dive equipment. Whether you are verifying a hydraulic test bench that logs in kPa against a 350 bar rating, setting a CO2 regulator for home carbonation, matching a tire sticker across a car imported from Europe, or checking a scuba fill, this tool moves the decimal with definitionally exact precision. Because 1 bar equals exactly 100,000 pascals and 1 kPa equals 1,000 pascals, every conversion is the clean factor 0.01 — no rounding drift, ever.

Expert Tips for Kilopascal to Bar Conversion

Anchor values worth memorizing: tire 220 kPa = 2.2 bar, espresso 900 kPa = 9 bar, municipal water 450 kPa = 4.5 bar, scuba fill 20,000 kPa = 200 bar

Sensor drift checks: many industrial transducers log in kPa while the acceptance criterion is written in bar — convert the limit first (e.g. 6.3 bar test = 630 kPa) so both sides of the log use one unit

Home carbonation runs 2-3 bar (200-300 kPa) at fridge temperature; soda streams peak near 4 bar (400 kPa), which is why regulators carry both scales

Weather bridge: 1,000 hPa on a forecast map = 100 kPa = 1 bar, so a low of 985 hPa is 98.5 kPa — handy when a barometer app and an engineering spec disagree in style

For PSI colleagues: 1 bar = 14.5038 PSI and 100 kPa carries the same value — convert through bar once instead of juggling two factors