kg/cm² to PSI Converter

About the kg/cm² to PSI Converter

The kg/cm² to PSI converter translates between kilogram-force per square centimeter and pounds per square inch, two pressure units still found on gauges, machine plates, and legacy documentation around the world. One kg/cm² equals 14.22334 PSI, so the conversion is straightforward once you know which side of the relationship you are starting from. That matters because older equipment often reports pressure in technical units while newer tools and service literature use PSI or bar.

Enter a value and the converter returns PSI, kg/cm², bar, kPa, MPa, Pa, atmospheres, and other common pressure units. The presets and reference table make it easier to compare everyday pressures such as tire inflation, shop air, and hydraulic systems without switching between several separate converters. It also helps when you need to sanity-check a number from a foreign spec sheet or translate a gauge reading into a unit that another team expects to see. That extra context matters because the unit is close to, but not exactly the same as, several other familiar pressure scales.

When This Page Helps

Use this converter when equipment labels, manuals, or gauges mix kg/cm² with PSI or bar. The unit appears less often than PSI, but it still shows up on compressors, cylinders, and imported machinery where the original documentation has never been updated.

It is useful for automotive work, compressed-air systems, pumps, and imported equipment where the reading unit may not match the rest of your workflow. Having both directions in one place reduces the risk of copying a rounded estimate into a report or maintenance log.

How to Use the Inputs

1. Enter a pressure value.
2. Select kg/cm²→PSI or PSI→kg/cm².
3. Adjust decimal precision as needed.
4. Read results in all common pressure units.
5. Click a preset for typical pressures.
6. Check the reference table for common values.

Example Calculation

Tips & Best Practices

• 1 kg/cm² ≈ 14.22 PSI ≈ 0.98 bar — all roughly the same as 1 atmosphere.
• A car tire at 35 PSI = 2.46 kg/cm² = 2.41 bar.
• kg/cm² is also written as kgf/cm², ksc, or at (technical atmosphere).
• The technical atmosphere (at) is defined as exactly 1 kgf/cm² = 98,066.5 Pa.
• 1 kg/cm² is 0.9678 standard atmospheres — very close but not identical.
• For rough conversions: multiply kg/cm² by 14 to estimate PSI (within 2%).

Technical vs. Standard Atmosphere

The technical atmosphere (at) = 1 kgf/cm² = 98,066.5 Pa. The standard atmosphere (atm) = 101,325 Pa. They differ by about 3.2%. In casual use they are treated as identical, but in engineering specifications the distinction matters — especially for safety-rated equipment.

Regional Usage

Japan, India, and South Korea commonly use kg/cm² on pressure gauges, tire markings, and boiler certifications. European and American practice favors bar or PSI. When sourcing equipment internationally, always verify which unit the nameplate uses.

Tire Pressure Context

A typical passenger car tire is 30–35 PSI = 2.1–2.5 kg/cm² = 2.1–2.4 bar. Heavy truck tires run 80–120 PSI = 5.6–8.4 kg/cm². Bicycle road tires can reach 120 PSI = 8.4 kg/cm². Always follow the vehicle manufacturer's specification, regardless of which unit is printed on the gauge.

Frequently Asked Questions

• How many PSI is 1 kg/cm²?

  1 kg/cm² = 14.22334 PSI. This comes from 1 kgf/cm² = 98,066.5 Pa and 1 PSI = 6,894.757 Pa, so the relationship is fixed and not a rough estimate.

• What is kg/cm²?

  Kilogram-force per square centimeter (kgf/cm²) is the pressure exerted by 1 kilogram of mass on 1 cm² under standard gravity. It is also called a "technical atmosphere" (at), which is why it still appears in older pressure charts.

• Is kg/cm² the same as bar?

  Nearly: 1 kg/cm² = 0.980665 bar. They differ by about 2%, so the units are close enough for rough comparisons but not interchangeable in precision work.

• How do I convert PSI to kg/cm²?

  Divide by 14.22334. For example, 100 PSI ÷ 14.22334 = 7.03 kg/cm², which is a useful check when reading older specifications.

• Is kg/cm² still used?

  Yes — commonly in Japan, India, South Korea, and on legacy industrial equipment worldwide. Many tire gauges, boiler plates, and cylinder specifications still use kg/cm², especially when the original equipment standard has not been updated.

• What is the difference between kgf/cm² and kg/cm²?

  They are the same unit. The "f" makes explicit that it is kilogram-force, a force unit, not kilogram, a mass unit, and in context kg/cm² usually means kgf/cm².