Kilopascals to PSI Converter 2026 | Free Pressure Conversion Tool

Pressure Conversion 2026

Kilopascals to PSI Converter

Accurate conversion between kilopascals (kPa) and pounds per square inch (PSI)

Convert kilopascals to PSI instantly with precise calculations. Includes reverse PSI to kPa conversion, bar, atmospheres, mmHg, pascals, full formula reference, and pressure reference tables for 2026.

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🔧 kPa to PSI Converter 2026

Professional pressure conversion for tyre inflation, hydraulics, HVAC, plumbing, meteorology, and engineering applications

✔ Accurate kPa to PSI Conversions

Convert kilopascals to PSI using the exact conversion factor: 1 kPa = 0.14503773773 PSI. Equivalently, multiply by 0.145038 or divide by 6.89476. For example, 100 kPa = 14.504 PSI. Our tool also outputs bar, atmospheres (atm), millimetres of mercury (mmHg), and pascals (Pa) for a complete multi-unit pressure breakdown in one step.

✔ Bidirectional Pressure Tool

Switch seamlessly between kPa to PSI and PSI to kPa conversion modes. Whether you are converting a tyre pressure reading from kPa (as shown on modern vehicle door placard stickers) to PSI (as marked on most tyre gauges and pumps), or converting hydraulic system pressures from PSI specifications to kPa for engineering documentation, both directions are handled instantly from a single input value.

✔ Practical Applications

Essential for tyre pressure monitoring and inflation, hydraulic and pneumatic system design, HVAC and refrigeration engineering, plumbing and water pressure calculations, meteorology and weather reporting, medical equipment (blood pressure, ventilators), scuba diving, and industrial process control in 2026. Correct kPa to PSI conversion ensures safety compliance and accurate equipment operation across all pressure-sensitive applications.

🔧 Convert kPa to PSI

Select conversion direction and enter your pressure value below

Enter Pressure — Kilopascals (kPa)

1 kPa = 0.14504 PSI — e.g., 200 kPa = 29.008 PSI (typical car tyre)

Enter Pressure — PSI (pounds per square inch)

1 PSI = 6.89476 kPa — e.g., 35 PSI = 241.316 kPa

PSI

Equivalent pressure

Complete Pressure Breakdown

kPa

PSI

Bar

Atmospheres (atm)

mmHg (torr)

Pascals (Pa)

Step-by-Step Calculation

Input Value —

Conversion Factor —

Result —

Bar —

Atmospheres (atm) —

What Is a Kilopascal and PSI? — kPa to PSI Explained

The kilopascal (kPa) is a unit of pressure in the International System of Units (SI), equal to 1,000 pascals. The pascal (Pa) is defined as one newton per square metre (N/m²). The kilopascal is the standard pressure unit used in most metric countries for tyre pressure, blood pressure, weather forecasting, and engineering specifications. Standard atmospheric pressure at sea level is approximately 101.325 kPa.

The pound per square inch (PSI) is a unit of pressure in the imperial and US customary systems, defined as one pound-force per square inch. It is widely used in the United States, United Kingdom, and other countries that retain imperial measurements for tyre pressures, hydraulic systems, compressed gas cylinders, and plumbing. Standard atmospheric pressure at sea level equals approximately 14.696 PSI. The exact conversion is 1 PSI = 6.894757293168361 kPa.

📐 Kilopascals to PSI Formula

PSI = kPa × 0.14503773773

kPa = PSI × 6.89476

Bar = kPa ÷ 100

Atmospheres (atm) = kPa ÷ 101.325

mmHg = kPa × 7.50062

Pascals (Pa) = kPa × 1,000

📊 Pressure Unit Scale — 100 kPa Equivalent

100 kPa

→

14.504 PSI

→

1.000 Bar

→

750.06 mmHg

100 kPa = 14.504 PSI = 1.000 bar = 0.987 atm = 750.06 mmHg = 100,000 Pa

🌤️ 101.3 kPa Standard
Atmosphere
(14.696 PSI)

🚗 200–250 kPa Car Tyre
Pressure
(29–36 PSI)

🚲 480–690 kPa Road Bike
Tyre
(70–100 PSI)

🏥 16 kPa Blood Pressure
Systolic
(120 mmHg)

🤿 200 kPa Depth 10m
Water
(29 PSI)

kPa to PSI Conversion Table 2026

Use the reference table below for quick kilopascals to PSI lookups. Common pressure values are listed covering tyre pressures, atmospheric pressures, hydraulic systems, and industrial applications. On mobile, a card layout is displayed for easy reading.

kPa	PSI	Bar	atm	mmHg	Common Reference
1 kPa	0.145 PSI	0.010 bar	0.00987 atm	7.501 mmHg	Very low pressure
10 kPa	1.450 PSI	0.100 bar	0.0987 atm	75.006 mmHg	Low-pressure system
50 kPa	7.252 PSI	0.500 bar	0.494 atm	375.031 mmHg	Half atmosphere
100 kPa	14.504 PSI	1.000 bar	0.987 atm	750.062 mmHg	~1 atmosphere / 1 bar
101.325 kPa	14.696 PSI	1.01325 bar	1.000 atm	760.000 mmHg	Standard atmosphere (1 atm)
150 kPa	21.756 PSI	1.500 bar	1.480 atm	1,125 mmHg	Low tyre pressure warning
200 kPa	29.008 PSI	2.000 bar	1.974 atm	1,500 mmHg	Typical small car tyre
220 kPa	31.908 PSI	2.200 bar	2.171 atm	1,650 mmHg	Common car tyre pressure
240 kPa	34.809 PSI	2.400 bar	2.369 atm	1,800 mmHg	SUV / 4WD tyre pressure
250 kPa	36.259 PSI	2.500 bar	2.467 atm	1,875 mmHg	High-load tyre pressure
300 kPa	43.511 PSI	3.000 bar	2.961 atm	2,250 mmHg	Light truck / van tyre
480 kPa	69.618 PSI	4.800 bar	4.737 atm	3,600 mmHg	Road bicycle tyre (low)
690 kPa	100.076 PSI	6.900 bar	6.808 atm	5,175 mmHg	Road bicycle tyre (high)
1,000 kPa	145.038 PSI	10.000 bar	9.869 atm	7,501 mmHg	High-pressure industrial
10,000 kPa	1,450.377 PSI	100.000 bar	98.692 atm	75,006 mmHg	Hydraulic press / deep sea

Low & Atmospheric (1 – 101 kPa)

1 kPa0.145 PSI / 0.010 bar

10 kPa1.450 PSI / 0.100 bar

50 kPa7.252 PSI / 0.500 bar

100 kPa14.504 PSI / 1.000 bar

101.325 kPa14.696 PSI / 1 atm

Tyre Pressures (150 – 300 kPa)

150 kPa21.756 PSI / 1.500 bar

200 kPa29.008 PSI / 2.000 bar

220 kPa31.908 PSI / 2.200 bar

240 kPa34.809 PSI / 2.400 bar

250 kPa36.259 PSI / 2.500 bar

300 kPa43.511 PSI / 3.000 bar

High Pressure (480 – 10,000 kPa)

480 kPa69.618 PSI / 4.800 bar

690 kPa100.076 PSI / 6.900 bar

1,000 kPa145.038 PSI / 10.000 bar

10,000 kPa1,450.377 PSI / 100 bar

How to Convert kPa to PSI — Step by Step

Converting kilopascals to PSI is straightforward. Follow these steps for any kPa to PSI calculation in 2026:

Identify your pressure in kPa — for example, a vehicle door placard showing 220 kPa tyre pressure.
Multiply by 0.14504 — the exact factor to convert kPa to PSI.
Result: 220 × 0.14504 = 31.908 PSI.
For the reverse (PSI to kPa), multiply your PSI value by 6.89476 — e.g., 32 PSI × 6.89476 = 220.63 kPa.
Use the converter tool above for instant multi-unit results including bar, atm, mmHg, and Pa.

✅ Quick Reference — Tyre Pressure

Most common car tyre pressures and their conversions: 200 kPa = 29 PSI. 210 kPa = 30.5 PSI. 220 kPa = 31.9 PSI. 230 kPa = 33.4 PSI. 240 kPa = 34.8 PSI. 250 kPa = 36.3 PSI. Always check your vehicle's door placard (not the tyre sidewall) for the correct recommended tyre pressure.

kPa to PSI — Key Pressure Facts 2026

🚗 Vehicle Tyre Pressure

Correct tyre inflation is critical for safety, fuel efficiency, and tyre longevity. Most passenger vehicles recommend 200–240 kPa (29–35 PSI) for standard tyres. Under-inflation by just 20 kPa (3 PSI) can reduce tyre life by 25% and increase fuel consumption by up to 3%. Modern TPMS (Tyre Pressure Monitoring Systems) alert drivers when pressure drops 25% below recommended levels.

🌤️ Atmospheric Pressure

Standard atmospheric pressure at sea level is defined as exactly 101.325 kPa (14.696 PSI or 1 atm or 1.01325 bar). Weather forecasters use hectopascals (hPa), where 1 hPa = 0.1 kPa. A typical low-pressure weather system reads around 990–1000 hPa (99–100 kPa / 14.36–14.50 PSI), while high-pressure systems exceed 1020 hPa (102 kPa / 14.79 PSI).

🏥 Medical Pressure

Blood pressure is measured in mmHg (torr), but can be converted to kPa. A healthy blood pressure of 120/80 mmHg equals approximately 16.0/10.7 kPa or 2.32/1.16 PSI. Medical oxygen cylinders are pressurised to approximately 13,800–20,000 kPa (2,000–3,000 PSI). Ventilators operate at low pressures typically between 2–4 kPa (0.29–0.58 PSI) of airway pressure.

💧 Water & Plumbing Pressure

Household water supply pressure is typically 200–550 kPa (29–80 PSI). The minimum recommended pressure for satisfactory tap and shower performance is 150 kPa (22 PSI). Pressure regulators in homes limit pressure to 350–550 kPa (50–80 PSI) to protect pipes and appliances. Every 10 metres of water depth adds approximately 98 kPa (14.2 PSI) of hydrostatic pressure.

⚙️ Hydraulic & Industrial

Industrial hydraulic systems typically operate between 5,000–35,000 kPa (725–5,076 PSI). Automotive power steering systems operate at 5,500–10,000 kPa (800–1,450 PSI). Compressed air tools require 550–690 kPa (80–100 PSI). High-pressure water jet cutting systems operate at 275,000–690,000 kPa (40,000–100,000 PSI) — powerful enough to cut through steel and stone.

🤿 Scuba & Diving

Scuba diving tanks are pressurised to 200–300 bar (20,000–30,000 kPa / 2,900–4,350 PSI). Water pressure increases by approximately 100 kPa (14.5 PSI) for every 10 metres of depth. At 30 metres depth, total pressure is approximately 400 kPa (58 PSI or 4 atm). Decompression sickness (the bends) occurs when dissolved nitrogen comes out of solution due to rapid pressure reduction.

ℹ️ kPa vs Bar vs PSI vs atm — Which Pressure Unit to Use in 2026?

kPa (kilopascal) — SI-derived unit used in most metric countries for tyres, engineering, and weather. PSI (pounds per square inch) — Imperial unit dominant in the USA and on most tyre gauges worldwide. Bar — Common in European engineering; 1 bar ≈ 100 kPa ≈ 14.5 PSI. atm (atmosphere) — Standard atmosphere = 101.325 kPa = 14.696 PSI; used as a reference baseline. mmHg / torr — Used in medicine and some laboratory applications. For all conversions in one tool, use the converter above.

⚠️ Gauge Pressure vs Absolute Pressure — An Important Distinction

Gauge pressure (PSIg / kPag) measures pressure relative to atmospheric pressure. A tyre gauge reading of 220 kPa (32 PSI) means the tyre is 220 kPa above atmospheric — so the absolute pressure inside is approximately 321 kPa (46.5 PSI). Absolute pressure (PSIa / kPaa) measures pressure relative to a perfect vacuum. In engineering, always clarify whether a value is gauge or absolute pressure, as confusing the two can cause significant errors in system design and safety calculations.

kPa to PSI — Frequently Asked Questions 2026

How do you convert kPa to PSI?

To convert kilopascals to PSI, multiply the kPa value by 0.14504. Formula: PSI = kPa × 0.14504. For example, 200 kPa × 0.14504 = 29.008 PSI. For a quick mental approximation, multiply kPa by 0.145 or divide by 6.895. The exact conversion factor is 1 kPa = 0.14503773773 PSI.

How do you convert PSI to kPa?

To convert PSI to kilopascals, multiply the PSI value by 6.89476. Formula: kPa = PSI × 6.89476. For example, 32 PSI × 6.89476 = 220.632 kPa. For a quick mental approximation, multiply PSI by 7 (slightly overestimates by ~1.5%). The exact conversion is 1 PSI = 6.894757293168361 kPa.

What is 220 kPa in PSI?

220 kPa = 31.908 PSI. Calculation: 220 × 0.14504 = 31.908. This is one of the most common tyre pressure conversions — 220 kPa is a typical recommended tyre pressure for small to mid-size passenger vehicles. Always check your vehicle's door placard for the manufacturer's recommended tyre pressure for your specific vehicle.

What is standard atmospheric pressure in kPa and PSI?

Standard atmospheric pressure (1 atm) is exactly 101.325 kPa = 14.6959 PSI = 1.01325 bar = 760 mmHg = 29.9213 inches of mercury. This is the reference pressure used in chemistry, physics, and engineering as a baseline. At higher altitudes, atmospheric pressure decreases — at 5,000 metres altitude, it is approximately 54 kPa (7.8 PSI).

What is the difference between kPa and bar?

1 bar = 100 kPa exactly. So to convert kPa to bar, simply divide by 100. For example, 250 kPa = 2.5 bar. The bar is very close to 1 atmosphere (1 atm = 1.01325 bar = 101.325 kPa). The bar is commonly used in European tyre pressure gauges and meteorology. In pressure terms: 1 kPa = 0.01 bar = 0.14504 PSI = 0.00987 atm.

What is 100 PSI in kPa?

100 PSI = 689.476 kPa = 6.895 bar = 6.805 atm. This is a common high-pressure reference in industrial applications. Road bicycle tyres are often inflated to 80–100 PSI (552–690 kPa). Compressed air lines in workshops typically operate at 80–120 PSI (552–827 kPa). At 100 PSI, a compressed air system contains approximately 6.8 times the pressure of normal atmosphere.

Why do some tyre gauges show kPa and others show PSI?

The unit shown on a tyre gauge depends on the country of manufacture and the intended market. In Australia, Canada, and most metric countries, vehicle door placards specify tyre pressures in kPa, so locally sold gauges often show kPa. In the USA, PSI is standard. European gauges commonly use bar. Modern digital tyre gauges often display all three units (kPa, PSI, bar) and allow the user to switch between them, making this converter particularly useful when using a gauge calibrated in a different unit than your vehicle placard.

Pressure Conversion Resources 2026

🚗 Tyre Pressure & Safety

Correct tyre pressure is one of the most important vehicle safety checks. Under-inflated tyres increase stopping distances, reduce fuel efficiency, and can cause blowouts at high speed. Most manufacturers recommend checking tyre pressure monthly and before long journeys. Always use the kPa or PSI values from your vehicle door placard, not the maximum pressure marked on the tyre sidewall.

Atmospheres to Pascals →

⚙️ Engineering & Hydraulics

Pressure conversions between kPa and PSI are routine in mechanical and hydraulic engineering, especially in mixed metric/imperial project environments. Hydraulic system pressures, pipe pressure ratings, pump curves, and compressor specifications may appear in different units depending on the manufacturer's country of origin. A reliable kPa to PSI converter is essential for engineering documentation.

BTU to Joules →

📚 SI Pressure Standards

The pascal (Pa) is the SI unit of pressure, defined as one newton per square metre (N/m²). The kilopascal (kPa = 1,000 Pa) and megapascal (MPa = 1,000,000 Pa) are the most practical SI pressure units for engineering. The PSI is a non-SI unit widely retained for practical use in the USA and UK. 1 PSI = 6,894.757 Pa = 6.895 kPa = 0.06895 bar.

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