Convert PSI to kPa — Free Pressure Converter
Convert psi to kPa as you type.
Pressure Converter - Convert kPa, PSI, Bar & More InstantlyReference for one unit; displayed values may be rounded.
PSI
Use a dot or comma for decimals, without thousands separators.
Kilopascal
Display rounding does not improve the accuracy of your original measurement. Very large or very small results use scientific notation.
Method and sourceChanging units does not change gauge pressure into absolute pressure or set a safe operating pressure.
NIST SP 811 — pound-force per square inchpsi → kpa — Worked examples
Choose an example to fill the tool. Results use the displayed formula and are rounded for display.
PSI to Kilopascal Conversion Formula
To convert PSI to kilopascals, multiply the PSI value by 6.89476. One PSI equals 6,894.76 pascals and one kilopascal equals 1,000 pascals.
PSI and Kilopascal Explained
PSI (psi)
PSI (pound-force per square inch) is the imperial pressure unit expressing one pound of force applied to one square inch. In SI terms it equals 6,894.76 pascals, or 6.89476 kilopascals. The unit scales so conveniently for hardware that it persists on imported tyre gauges, compressor regulators, and older workshop fittings: a car tyre sits near 32 PSI, a workshop compressor near 90 PSI, and a hydraulic hose may carry 3,000 PSI. Readings labelled PSIG are gauge values measured above local atmosphere.
Where it is used: PSI is the working pressure unit of the United States — you will still spot it on imported tyre gauges, older workshop gear, and American machinery, so it pays to be able to read it.
Origin: The unit comes from 19th-century British engineering, combining the imperial pound-force with the square inch, and it remains entrenched in US customary practice.
Kilopascal (kPa)
The kilopascal (kPa) is 1,000 pascals — a thousand newtons of force per square metre — and the most practical SI pressure unit for everyday magnitudes. Familiar pressures land in comfortable hundreds: car tyres near 220 kPa, household water around 450 kPa, and standard sea-level air at 101.325 kPa. Higher domains use its siblings, with 1,000 kPa making one megapascal and 100 kPa making one bar, so metric documentation slides between prefixes without awkward decimals.
Where it is used: Kilopascals appear on Australian tyre placards and in owner's manuals, on weather reports, in SI engineering datasheets, building codes, and medical device specifications.
Origin: The prefix kilo joined the pascal after the unit entered the SI in 1971, quickly becoming the default for pressures too large for raw pascals but too small for megapascals.
PSI to Kilopascal Conversion Table
Select a value to use it in the calculator.
| PSI (psi) | Kilopascal (kPa) |
|---|---|
| 6.8947572932 kPa | |
| 13.7895145863 kPa | |
| 34.4737864658 kPa | |
| 68.9475729317 kPa | |
| 101.3529322096 kPa | |
| 103.4213593975 kPa | |
| 137.8951458634 kPa | |
| 172.3689323292 kPa | |
| 206.8427187951 kPa | |
| 220.6322333814 kPa | |
| 241.3165052609 kPa | |
| 248.2112625541 kPa | |
| 275.7902917267 kPa | |
| 344.7378646584 kPa | |
| 413.6854375901 kPa | |
| 551.5805834535 kPa | |
| 689.4757293168 kPa | |
| 1034.2135939753 kPa | |
| 1378.9514586337 kPa |
Kilopascal to PSI Conversion Table
| Kilopascal (kPa) | PSI (psi) |
|---|---|
| 10 kPa | 1.4503773773 psi |
| 20 kPa | 2.9007547546 psi |
| 50 kPa | 7.2518868865 psi |
| 100 kPa | 14.503773773 psi |
| 101.325 kPa | 14.6959487755 psi |
| 150 kPa | 21.7556606595 psi |
| 200 kPa | 29.007547546 psi |
| 220 kPa | 31.9083023006 psi |
| 300 kPa | 43.5113213191 psi |
| 400 kPa | 58.0150950921 psi |
| 450 kPa | 65.2669819786 psi |
| 500 kPa | 72.5188688651 psi |
| 600 kPa | 87.0226426381 psi |
| 700 kPa | 101.5264164111 psi |
PSI to Kilopascal in Everyday Objects
Common real-world examples that make PSI and Kilopascal easy to picture at a glance.
| PSI (psi) | Kilopascal (kPa) | |
|---|---|---|
| A compact spare tyre | 60 psi | 413.6854375901 kPa |
| A 4WD or light-truck tyre | 55 psi | 379.2116511243 kPa |
| A portable inflator preset | 36 psi | 248.2112625541 kPa |
| A fire main hydrostatic test | 200 psi | 1378.9514586337 kPa |
| A track-day race tyre | 50 psi | 344.7378646584 kPa |
| An entry-level pressure washer | 1450 psi | 9997.3980750941 kPa |
When You Need PSI to Kilopascal Conversions
Tyre Placard Checks
Your sedan's placard lists 220 kPa cold, but the borrowed gauge at the servo reads PSI — enter 32 to confirm you are sitting at 220.6 kPa.
Hydraulic Hose Datasheets
A hose stamped 3,000 PSI on mining or earthmoving gear must slot into a metric procurement form: 3,000 PSI converts to 20,684.3 kPa, written 20.7 MPa by the supplier.
Fire System Hydrotests
A fire main held at 200 PSI for the two-hour test gets logged as 1,379.0 kPa on the council or certifier's inspection sheet.
Turbo Boost Tuning
A workshop raises boost from 8 PSI to 15 PSI and reports the change to the tuner as 55.2 kPa to 103.4 kPa of manifold pressure on the metric ECU logs.
Related Pressure Conversions
How to Use
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1
Enter PSI Value
Type the PSI reading from your gauge — common entries include hatchback and sedan tyres (30-36 PSI), 4WD tyres on the highway (32-40 PSI), and workshop compressors (90-175 PSI)
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2
View kPa Result
The kilopascal equivalent appears instantly. For example, 35 PSI converts to about 241.3 kPa
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3
Copy or Swap
Copy the result or click Swap to convert kilopascals back to PSI
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4
Match the Tyre Placard
Australian tyre placards on the driver's door pillar list 220-250 kPa — the same as 32-36 PSI — so check your converted value before you inflate
Why Use Be Converter?
Instant Conversion
Get precise PSI to kPa results in real-time as you type — perfect for translating imported gauge readings into the metric specs on Aussie tyre placards
High Accuracy
Uses the exact international standard: 1 PSI = 6,894.76 Pa and 1 kPa = 1,000 Pa, accurate to 6 decimal places
Conversion Table
Quick reference with common values like 32 PSI (220.6 kPa) for highway driving, 18 PSI (124.1 kPa) for soft sand, and 90 PSI (620.5 kPa) for a workshop compressor
Bidirectional
Easily swap between PSI and kilopascals with one click for reverse conversions
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Frequently Asked Questions
How many kPa is 1 PSI?
What is 32 PSI in kPa?
What is the difference between PSI and kPa?
How do I convert air compressor pressure from PSI to kPa?
Is kPa the same as bar?
How many kPa is 40 PSI?
Why do Australian tyre placards show kPa?
What kPa should my passenger car tyres be?
About PSI to Kilopascal Converter
Our free online PSI to kilopascal converter delivers instant, accurate translations between the imperial pressure unit and the SI metric standard used right across Australia. Whether you are checking the tyre placard on your Corolla, dropping pressures for a run up the beach, entering gauge readings into an engineering datasheet, or comparing compressor output across metric and imperial manuals, this tool handles it precisely. PSI still lingers on imported gauges and older workshop gear, while kilopascals rule Australian placards, specifications, and SI engineering documents. Our converter applies the exact factor where 1 PSI equals 6.89476 kPa.
Expert Tips for PSI to Kilopascal Conversion
For quick tyre work: 30 PSI ≈ 206.8 kPa, 32 PSI ≈ 220.6 kPa, 35 PSI ≈ 241.3 kPa, 36 PSI ≈ 248.2 kPa — the metric versions of the classic placard pressures
Mental maths shortcut: add half again plus a bit — 40 PSI is about 276 kPa (40 + 40 × 0.7). The exact factor is 6.89476 kPa per PSI
Beach driving on soft sand at K'gari or Cable Beach usually means dropping to 16-20 PSI (110.3-137.9 kPa); write the kPa figure on your visor so you can convert at a glance
Caravanning? Loaded rigs often run 40-45 PSI (275.8-310.3 kPa) in the rear tyres — convert so you never creep past the sidewall's kPa maximum
Hydraulic and hose ratings often jump scales: a 3,000 PSI hydraulic hose — common on mining and earthmoving kit — is 20,684.3 kPa, usually written 20.7 MPa on metric datasheets
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