Kilogram-force per square centimetre

A kilogram-force per centimetre square (kgf/cm2), often just kilogram per square centimetre (kg/cm2), or kilopond per centimetre square (kp/cm2) is a deprecated unit of pressure using metric units. It is not a part of the International System of Units (SI), the modern metric system. 1 kgf/cm2 equals 98.0665 kPa (kilopascals). It is also known as a technical atmosphere (symbol: at).

Kilogram-force per square centimetre
Soviet-made pressure gauges using kgf/cm2
General information
Unit ofPressure
Symbolkgf/cm2, at
Conversions
1 kgf/cm2 in ...... is equal to ...
   SI units   98.06650 kPa
   FPS units   14.22334 psi

The kilogram-force per square centimetre remains active as a measurement of force primarily due to older pressure measurement devices still in use.

This use of the unit of pressure provides an intuitive understanding for how a body's mass can apply force to a scale's surface area i.e.kilogram-force per square (centi-)metre.

In SI units, the unit is converted to the SI derived unit pascal (Pa), which is defined as one newton per square metre (N/m2). A newton is equal to 1 kg⋅m/s2, and a kilogram-force is 9.80665 N, meaning that 1 kgf/cm2 equals 98.0665 kilopascals (kPa).

In some older publications, kilogram-force per square centimetre is abbreviated ksc instead of kg/cm2.

Pressure units
Pascal Bar Technical atmosphere Standard atmosphere Torr Pound per square inch
(Pa) (bar) (at) (atm) (Torr) (lbf/in2)
1 Pa — 1 Pa = 10−5 bar 1 Pa = 1.0197×10−5 at 1 Pa = 9.8692×10−6 atm 1 Pa = 7.5006×10−3 Torr 1 Pa = 0.000145037737730 lbf/in2
1 bar 105 — = 1.0197 = 0.98692 = 750.06 = 14.503773773022
1 at 98066.5 0.980665 — 0.9678411053541 735.5592401 14.2233433071203
1 atm ≡ 101325 ≡ 1.01325 1.0332 — 760 14.6959487755142
1 Torr 133.322368421 0.001333224 0.00135951 1/760 ≈ 0.001315789 — 0.019336775
1 lbf/in2 6894.757293168 0.068947573 0.070306958 0.068045964 51.714932572 —
1 at = 98.0665 kPa
≈ 0.96784 standard atmospheres
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