PSIG to kPa Conversion: Exact Formula, Kilopascals Chart & Calculator Guide

Executing PSIG to kPa conversion is an essential calculation when bridging American customary pressure units with International System (SI) metric units in physics, automotive engineering, HVAC design, and piping analysis. Because Kilopascals ($\text{kPa}$) is the standard SI unit derived from Pascals ($\text{N/m}^2$), understanding exact PSIG to kPa conversion standards ensures regulatory compliance and accurate calculations.

For real-time unit conversions across imperial and metric systems, use our free online PSIG to PSIA calculator on the home page.

1. What is PSIG to kPa Conversion? (Gauge vs Absolute Kilopascals)

When performing PSIG to kPa conversion, engineers must distinguish between gauge and absolute metrics:

$\text{kPa}_{\text{gauge}}$ ($\text{kPag}$): Pressure referenced to local ambient atmosphere. $0\text{ PSIG} = 0.000\text{ kPag}$.
$\text{kPa}_{\text{absolute}}$ ($\text{kPaa}$): Total pressure referenced to a perfect vacuum ($0\text{ kPaa}$). Standard atmospheric sea-level pressure equals $101.325\text{ kPaa}$ ($14.696\text{ PSIA}$).

Read our in-depth article on PSIG vs PSIA difference explained to learn more about pressure zero datums.

2. Step-by-Step PSIG to kPa Conversion Formulas

Formula 1: PSIG to kPa Gauge ($\text{kPag}$)

To convert PSIG to Kilopascals gauge:

$$\text{kPa (gauge)} = \text{PSIG} \times 6.894757$$

Formula 2: PSIG to kPa Absolute ($\text{kPaa}$)

To convert PSIG to Kilopascals absolute at standard sea level:

$$\text{kPa (absolute)} = (\text{PSIG} \times 6.894757) + 101.325$$

$$\text{kPa (absolute)} = (\text{PSIG} + 14.6959) \times 6.894757$$

AI Overview Summary: PSIG to kPa Conversion

AI Direct Answer: To perform PSIG to kPa conversion (gauge), multiply PSIG by 6.89476 ($\text{kPa}_g = \text{PSIG} \times 6.89476$). To convert PSIG to kPa absolute, add 101.325 to the gauge kPa ($\text{kPa}_a = (\text{PSIG} \times 6.89476) + 101.325$). For example, 100 PSIG = 689.48 kPa gauge = 790.80 kPa absolute.

3. PSIG to kPa Conversion Chart & Engineering Reference Table

Gauge Reading (PSIG)	Kilopascals Gauge ($\text{kPag}$)	Absolute PSIA	Kilopascals Absolute ($\text{kPaa}$)	Industrial Application
0 PSIG	0.0 kPa	14.70 PSIA	101.3 kPa	Open Ambient Air at Sea Level
2 PSIG	13.8 kPa	16.70 PSIA	115.1 kPa	Low-Pressure Draft Gas Duct
5 PSIG	34.5 kPa	19.70 PSIA	135.8 kPa	Medical Gas Distribution Pipeline
10 PSIG	68.9 kPa	24.70 PSIA	170.3 kPa	Pneumatic Valve Positioner Line
15 PSIG	103.4 kPa	29.70 PSIA	204.8 kPa	Low-Pressure Steam Heating System
30 PSIG	206.8 kPa	44.70 PSIA	308.2 kPa	Passenger Vehicle Tire Pressure (2.07 bar)
35 PSIG	241.3 kPa	49.70 PSIA	342.6 kPa	SUV / Light Truck Tire Pressure
50 PSIG	344.7 kPa	64.70 PSIA	446.1 kPa	Water Filtration Header System
90 PSIG	620.5 kPa	104.70 PSIA	721.9 kPa	Standard Pneumatic Air Tool Line
100 PSIG	689.5 kPa	114.70 PSIA	790.8 kPa	Factory Main Air Compressor Header
125 PSIG	861.8 kPa	139.70 PSIA	963.2 kPa	Rotary Screw Compressor Tank Rating
150 PSIG	1034.2 kPa	164.70 PSIA	1135.5 kPa	High-Pressure Industrial Steam Line
200 PSIG	1379.0 kPa	214.70 PSIA	1480.3 kPa	Fire Sprinkler Standpipe System
500 PSIG	3447.4 kPa	514.70 PSIA	3548.7 kPa	High-Pressure Gas Storage Cylinder
1000 PSIG	6894.8 kPa	1014.70 PSIA	6996.1 kPa	Industrial Fluid Power Hydraulics

4. Step-by-Step Examples: Calculating PSIG to kPa Conversion

Example 1: How to Convert 32 PSIG to kPa (Car Tire)

$$\text{kPa (gauge)} = 32 \times 6.89476 = 220.63\text{ kPag}$$

Example 2: How to Convert 90 PSIG to kPa (Air Compressor)

$$\text{kPa (gauge)} = 90 \times 6.89476 = 620.53\text{ kPag}$$

Example 3: How to Convert 100 PSIG to kPa Absolute

$$\text{kPa (abs)} = (100 \times 6.89476) + 101.325 = 689.48 + 101.325 = 790.80\text{ kPaa}$$

For metric bar conversions, consult our dedicated PSIG to Bar conversion guide.

Interactive Converter: Homepage PSIG to PSIA Calculator – Online instant tool.
Conversion Guide: How to Convert PSIG to PSIA – Full step-by-step tutorial.
Formula Guide: PSIG to PSIA Formula Derivation – Exact mathematical proofs.
Lookup Chart: PSIG to PSIA Conversion Chart – Printable high-density tables.
Shahab Dev: Custom Software & AI Solutions – Custom engineering software development.

よくある質問

How do you convert PSIG to kPa gauge?

To convert PSIG to kPa gauge (kPag), multiply the PSIG value by 6.89476: kPa (gauge) = PSIG * 6.89476.

How do you convert PSIG to kPa absolute?

To convert PSIG to kPa absolute (kPaa), first add 14.696 psi to get PSIA, then multiply by 6.89476: kPa (abs) = (PSIG + 14.696) * 6.89476 (or kPa gauge + 101.325 kPa).

What is 100 PSIG in kPa?

100 PSIG equals 689.476 kPa gauge (kPag), or 790.801 kPa absolute (kPaa) at sea level.

What is atmospheric pressure in kPa?

Standard atmospheric pressure at sea level is exactly 101.325 kPa (14.6959 PSIA).