In physics, the dyne (symbol "dyn", from Greek δύναμις (dynamis) meaning power, force) is a unit of force specified in the centimetregramsecond (CGS) system of units, a predecessor of the modern SI. One dyne is equal to exactly 10 µN. Equivalently, the dyne is defined as "the force required to accelerate a mass of one gram at a rate of one centimetre per second squared":
The dyne per centimetre is the unit traditionally associated with measuring surface tension. For example, the surface tension of distilled water is 72 dyn/cm at 25°C (77°F)^{[1]}; in SI units this would be 72 mN/m.
newton (SI unit) 
dyne  kilogramforce, kilopond 
poundforce  poundal  

1 N  ≡ 1 kg·m/s²  = 10^{5} dyn  ≈ 0.10197 kp  ≈ 0.22481 lb_{f}  ≈ 7.2330 pdl 
1 dyn  = 10^{−5} N  ≡ 1 g·cm/s²  ≈ 1.0197×10^{−6} kp  ≈ 2.2481×10^{−6} lb_{f}  ≈ 7.2330×10^{−5} pdl 
1 kp  = 9.80665 N  = 980665 dyn  ≡ g_{n}·(1 kg)  ≈ 2.2046 lb_{f}  ≈ 70.932 pdl 
1 lb_{f}  ≈ 4.448222 N  ≈ 444822 dyn  ≈ 0.45359 kp  ≡ g_{n}·(1 lb)  ≈ 32.174 pdl 
1 pdl  ≈ 0.138255 N  ≈ 13825 dyn  ≈ 0.014098 kp  ≈ 0.031081 lb_{f}  ≡ 1 lb·ft/s² 
The value of g_{n} as used in the official definition of the kilogramforce is used here for all gravitational units. 
