Convert Psi to Kgf/cm2 (kgf/cm²)
1 psi equals 0.070307 kgf/cm2.
Psi to Kgf/cm2 Converter
What Is a Psi?
Pounds per square inch (psi) is the US pressure standard (≈ 6,894.76 Pa). Used for tires, hydraulics, and industrial specs.
What Is a Kgf/Cm²?
Kilogram-force per square centimeter (kgf/cm²) is a metric gravitational pressure unit. 1 kgf/cm² ≈ 0.9807 bar ≈ 14.223 psi. It is used in some European and Asian engineering contexts.
Psi to Kgf/Cm² Formula
The conversion formula is:
kgf/cm² = psi × 0.070307
Derived from: 1 psi ≈ 6,894.76 Pa, and 1 kgf/cm² = 98,066.5 Pa.
Worked Example
Convert 35 psi (35 psi tire pressure):
- Calculate: 35 → 2.461 kgf/cm²
Common Use Cases
This conversion is needed regularly in:
- Japanese and Korean industrial equipment: Pressure gauges, compressor specifications, and hydraulic equipment from Japan and South Korea often use kgf/cm². US technicians servicing this equipment must convert from their psi-based tools.
- Legacy mechanical engineering: Older engineering handbooks, material specifications, and machine documentation from before SI adoption may list pressures in kgf/cm². Converting to psi helps US engineers interpret these historical specifications.
- Tire pressure on imported vehicles: Some older Japanese and Korean vehicles specify tire pressure in kgf/cm² on the door placard. Since 1 kgf/cm² ≈ 14.2 psi, a specification of 2.3 kgf/cm² equals approximately 32.7 psi.
- Boiler and pressure vessel codes: Some national boiler codes (particularly in India, Brazil, and Japan) use kgf/cm². Cross-referencing with ASME standards (which use psi) requires accurate conversion for compliance and safety.
Frequently Asked Questions
Is kgf/cm² the same as kg/cm²?
In practice, yes — they are used interchangeably. Technically, kgf/cm² (kilogram-force per square centimeter) is the correct notation because it specifies force, not mass. The "f" clarifies that the kilogram is being used as a force unit (1 kgf = 9.80665 N), not a mass unit. Most engineers understand kg/cm² to mean kgf/cm².
How does kgf/cm² compare to bar and atm?
1 kgf/cm² = 0.980665 bar = 0.96784 atm = 98,066.5 Pa. All three units are close in magnitude: 1 kgf/cm² ≈ 1 bar ≈ 1 atm (all within about 3% of each other). This near-equivalence is coincidental but convenient for rough estimates.
Why is kgf/cm² still used if SI replaced it?
Inertia and installed base. Millions of pressure gauges, specifications, and technical documents in Japan, India, Brazil, and other countries use kgf/cm². While new standards prefer pascals or bar, existing equipment and legacy documentation ensure kgf/cm² remains in daily use in many industries.
How do I quickly estimate psi to kgf/cm²?
Divide psi by 14.2 for a quick estimate. For example: 100 psi ÷ 14.2 ≈ 7.04 kgf/cm² (exact: 7.031). Alternatively, multiply psi by 0.07. The two units have a nearly identical ratio to the bar-to-psi conversion (14.5 for bar, 14.2 for kgf/cm²).
Common Psi to Kgf/cm2 Conversions
| Psi | Kgf/cm2 | Actions |
|---|---|---|
| 1 psi | 0.070307 kgf/cm2 | |
| 5 psi | 0.351535 kgf/cm2 | |
| 10 psi | 0.70307 kgf/cm2 |
| Psi | Kgf/cm2 | Actions |
|---|---|---|
| 14.696 psi | 1.03323 kgf/cm2 | |
| 50 psi | 3.51535 kgf/cm2 | |
| 100 psi | 7.0307 kgf/cm2 |
Psi to kgf/cm2 Conversion Table
Reference table with common psi to kgf/cm2 conversions. All values calculated with high precision.
Psi to Kgf/cm2 Table
0.01 to 50
Psi to Kgf/cm2 Table
100 to 10000000
Kgf/cm2 to Psi Table
0.0001 to 12
Kgf/cm2 to Psi Table
1 to 100000
Looking for the reverse? Convert Kgf/cm2 to Psi
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