kPa to PSI Converter – Instant Pressure Conversion Tool
Switch kilopascals to PSI in seconds with our free pressure converter. Built for American home water-pressure checks, imported car tire specs, and HVAC work. Instant, accurate kPa to PSI results — no signup, no limits.
US Standard Pressure Converter & CalculatorThe quick answer for 1 Kilopascal — type any value below for the exact result
Kilopascal
PSI
Kilopascal to PSI Conversion Formula
Multiply your kPa value by 0.145038 to get PSI. One kilopascal equals 1,000 pascals, and one PSI equals 6,894.76 pascals — one quick multiplication handles any reading.
Kilopascal and PSI Explained
Kilopascal (kpa)
The kilopascal (kPa) is the SI pressure unit equal to 1,000 pascals — a thousand newtons of force over one square meter. Everyday pressures land in tidy hundreds under it: sea-level air at 101.325 kPa, passenger tires at 220 kPa, household water at 450 kPa. The unit chains cleanly through the metric system, with 100 kPa making one bar and 1,000 kPa making one megapascal, so a single reading serves plumbing, weather, and hydraulic contexts alike.
Where it is used: Kilopascals show up on imported-car tire stickers, Canadian weather reports, SI engineering datasheets, international plumbing specs, and medical device documentation.
Origin: The prefix kilo attached to the pascal after the unit became the SI pressure standard in 1971, filling the gap between raw pascals and industrial megapascals.
PSI (psi)
PSI (pound-force per square inch) is the imperial pressure unit: one pound of force pressing on one square inch. It equals 6,894.76 pascals, or 6.89476 kPa. The scale suits American infrastructure well — household water spans 40-80 PSI, car tires 32-36 PSI, and shop compressors 90-175 PSI — which keeps the unit entrenched across US gauges, codes, and manuals even as the rest of the world reads kilopascals or bar.
Where it is used: PSI is the default pressure unit in the United States for plumbing inspections, appliance ratings, tire care, and compressed-air equipment.
Origin: Rooted in 19th-century British engineering that paired the pound-force with the square inch, the unit survives as a US customary standard long after Britain went metric.
Kilopascal to PSI Conversion Table
| Kilopascal (kpa) | PSI (psi) |
|---|---|
| 1 kpa | 0.1450376808 psi |
| 2 kpa | 0.2900753616 psi |
| 5 kpa | 0.7251884039 psi |
| 10 kpa | 1.4503768079 psi |
| 20 kpa | 2.9007536158 psi |
| 50 kpa | 7.2518840395 psi |
| 70 kpa | 10.1526376553 psi |
| 100 kpa | 14.5037680789 psi |
| 101.325 kpa | 14.695943006 psi |
| 150 kpa | 21.7556521184 psi |
| 200 kpa | 29.0075361579 psi |
| 220 kpa | 31.9082897737 psi |
| 250 kpa | 36.2594201974 psi |
| 300 kpa | 43.5113042368 psi |
| 350 kpa | 50.7631882763 psi |
| 400 kpa | 58.0150723158 psi |
| 450 kpa | 65.2669563553 psi |
| 500 kpa | 72.5188403947 psi |
| 600 kpa | 87.0226084737 psi |
| 700 kpa | 101.5263765526 psi |
PSI to Kilopascal Conversion Table
| PSI (psi) | Kilopascal (kpa) |
|---|---|
| 1 psi | 6.89476 kpa |
| 5 psi | 34.4738 kpa |
| 10 psi | 68.9476 kpa |
| 14.5 psi | 99.97402 kpa |
| 20 psi | 137.8952 kpa |
| 25 psi | 172.369 kpa |
| 30 psi | 206.8428 kpa |
| 32 psi | 220.63232 kpa |
| 35 psi | 241.3166 kpa |
| 36 psi | 248.21136 kpa |
| 40 psi | 275.7904 kpa |
| 50 psi | 344.738 kpa |
| 60 psi | 413.6856 kpa |
| 80 psi | 551.5808 kpa |
Kilopascal to PSI in Everyday Objects
Common real-world examples that make Kilopascal and PSI easy to picture at a glance.
| Kilopascal (kpa) | PSI (psi) | |
|---|---|---|
| A city water supply | 450 kpa | 65.2669563553 psi |
| A Canadian-market tire sticker | 220 kpa | 31.9082897737 psi |
| A drip-irrigation feed | 300 kpa | 43.5113042368 psi |
| A shop air line | 600 kpa | 87.0226084737 psi |
| A home reverse-osmosis feed | 400 kpa | 58.0150723158 psi |
| A fire-sprinkler riser | 700 kpa | 101.5263765526 psi |
When You Need Kilopascal to PSI Conversions
Home Water Pressure Tests
A test gauge screwed onto an outdoor spigot reads 450 kPa; enter it for 65.3 PSI, then check it against your local 80 PSI plumbing limit.
US Appliance Installations
An American icemaker calls for a 30-120 PSI supply line; your metric gauge shows 400 kPa, which is 58.0 PSI — safely mid-range.
Sprinkler & Irrigation Design
Drip manufacturers quote 70-350 kPa operating bands while your irrigation crew works in PSI — 300 kPa at the regulator becomes 43.5 PSI.
Pneumatic Filter Servicing
A filter-change indicator trips at 70 kPa of pressure drop, equal to 10.2 PSI, so the shop's maintenance log gets the PSI figure.
Related Pressure Conversions
How to Use
-
1
Enter kPa Value
Type in the kilopascal reading — common US entries include home water pressure measured at an outdoor spigot (400-500 kPa), imported tire specs (220-250 kPa), and sea-level barometric readings (about 101 kPa)
-
2
View PSI Result
Your PSI result appears instantly. A typical municipal reading of 450 kPa converts to about 65.3 PSI
-
3
Copy or Swap
Copy the result for your inspection notes, or hit Swap to run PSI back into kilopascals
-
4
Check Against US Limits
Compare it against American plumbing norms: most codes cap household water at 80 PSI (551.6 kPa). If your reading runs higher — common in older Chicago or Houston neighborhoods — add a pressure-reducing valve
Why Use Be Converter?
Instant Conversion
Get precise kPa to PSI numbers in real time as you type — perfect for checking well pressure, imported tire specs, or metric spec sheets
High Accuracy
Built on the exact international standard — 1 kPa = 1,000 Pa and 1 PSI = 6,894.76 Pa — accurate to 6 decimal places
Conversion Table
Quick-reference chart with common values like 100 kPa (14.5 PSI), 220 kPa (31.9 PSI), and 700 kPa (101.5 PSI)
Bidirectional
One click flips the tool from kilopascals to PSI and back, so reverse conversions take zero extra work
Free & No Signup
No account, no limits, no fees. Run as many conversions as you need — free forever
Privacy First
Every calculation runs right in your browser. Nothing you type ever leaves your device
Frequently Asked Questions
How many PSI is 1 kPa?
What is 220 kPa in PSI?
What is the difference between kPa and PSI?
How do I convert water pressure from kPa to PSI?
How many kPa are in 1 PSI?
How many PSI is 300 kPa?
What is normal house water pressure?
How do I estimate kPa to PSI without a calculator?
About the kPa to PSI Converter
Our free kPa to PSI converter turns metric pressure readings into the numbers American tools, codes, and gauges actually use. Checking water pressure at your Phoenix home, installing an icemaker with a metric supply spec, designing a backyard sprinkler zone in Texas, or decoding the kPa tire sticker on a newly imported car — this tool delivers the exact PSI equivalent every time. Kilopascals show up on foreign vehicles, SI engineering documents, and medical gear, while PSI governs US plumbing codes, appliances, and shop compressors. We apply the exact factor: 1 kPa = 0.145038 PSI.
Expert Tips for Kilopascal to PSI Conversion
Water-pressure anchors: 300 kPa = 43.5 PSI (drip irrigation), 450 kPa = 65.3 PSI (typical city supply), 550 kPa = 79.8 PSI (just under the 80 PSI code ceiling)
Imported-car tire stickers print 220-240 kPa — that's 31.9-34.8 PSI, matching the 32-35 PSI door-jamb figures on US-market versions of the same vehicle
Boiler loops in Northeast homes: a 150 kPa fill is 21.8 PSI and 200 kPa is 29.0 PSI; most residential relief valves pop near 210 kPa (30.5 PSI)
For quick field estimates, divide kPa by 7 and add about 2 percent; for anything recorded on a permit or inspection sheet, use the exact 0.145038 factor
Shop-air gauges often track pressure drop in kPa — a 70 kPa drop across a compressor filter (10.2 PSI) is the usual signal to swap the element