Unit Conversion Factors

In each case here, given a value in the units mentioned first in the name, you should multiply by the given constant to produce the equivalent quantity measured in the units that appear second in the name. More...

Macros
#define	SimTK_RADIAN_TO_DEGREE   5.729577951308232087679815481410517033240547246656432154916024386e+1L
	Convert radians to degrees. More...
#define	SimTK_DEGREE_TO_RADIAN   1.745329251994329576923690768488612713442871888541725456097191440e-2L
	Convert degrees to radians. More...
#define	SimTK_NS_TO_S   1e-9L
	Convert nanoseconds to seconds. More...
#define	SimTK_S_TO_NS   1e9L
	Convert seconds to nanoseconds. More...
#define	SimTK_KCAL_TO_KJOULE   4.184L /* exact */
	Convert Kcal to Kjoule (also Kcal/mol to Kjoule/mol). More...
#define	SimTK_KJOULE_TO_KCAL   2.390057361376673040152963671128107074569789674952198852772466539e-1L
	Convert Kjoule to Kcal (also Kjoule/mol to Kcal/mol). More...
#define	SimTK_DALTON_TO_GRAM   1.66053886e-24L
	Convert atomic mass unit (amu, Dalton) to g. More...
#define	SimTK_E_TO_COULOMB   SimTK_CHARGE_OF_PROTON_IN_SI
	Convert proton charge units to Coulombs. More...
#define	SimTK_EV_TO_JOULE   SimTK_CHARGE_OF_PROTON_IN_SI
	Convert electron volts to Joules. More...

Detailed Description

In each case here, given a value in the units mentioned first in the name, you should multiply by the given constant to produce the equivalent quantity measured in the units that appear second in the name.

You can perform the reverse conversion by dividing by the constant, or by using another conversion constant with the names reversed if one is supplied here.

Macro Definition Documentation

#define SimTK_RADIAN_TO_DEGREE   5.729577951308232087679815481410517033240547246656432154916024386e+1L

Convert radians to degrees.

uncertainty

approximation of an exact quantity

See also

SimTK_DEGREE_TO_RADIAN

#define SimTK_DEGREE_TO_RADIAN   1.745329251994329576923690768488612713442871888541725456097191440e-2L

Convert degrees to radians.

uncertainty

approximation of an exact quantity

See also

SimTK_RADIAN_TO_DEGREE

#define SimTK_NS_TO_S   1e-9L

Convert nanoseconds to seconds.

uncertainty

exact

See also

SimTK_S_TO_NS

#define SimTK_S_TO_NS   1e9L

Convert seconds to nanoseconds.

uncertainty

exact

See also

SimTK_NS_TO_S

#define SimTK_KCAL_TO_KJOULE   4.184L /* exact */

Convert Kcal to Kjoule (also Kcal/mol to Kjoule/mol).

uncertainty

exact

See also

SimTK_KJOULE_TO_KCAL

#define SimTK_KJOULE_TO_KCAL   2.390057361376673040152963671128107074569789674952198852772466539e-1L

Convert Kjoule to Kcal (also Kjoule/mol to Kcal/mol).

uncertainty

approximation of an exact quantity

See also

SimTK_KCAL_TO_KJOULE

#define SimTK_DALTON_TO_GRAM   1.66053886e-24L

Convert atomic mass unit (amu, Dalton) to g.

This is 1/NA (NA=avogadro's number).

uncertainty

28e-32

See also

SimTK_AVOGADROS_NUMBER

#define SimTK_E_TO_COULOMB   SimTK_CHARGE_OF_PROTON_IN_SI

Convert proton charge units to Coulombs.

This is the same as the conversion from electron volts to Joules, and both are just the charge of a proton in SI units.

See also

SimTK_CHARGE_OF_PROTON_IN_SI

SimTK_EV_TO_JOULE

#define SimTK_EV_TO_JOULE   SimTK_CHARGE_OF_PROTON_IN_SI

Convert electron volts to Joules.

This is the same as the conversion from proton charge units to Coulombs, and both are just the charge of a proton in SI units.

See also

SimTK_CHARGE_OF_PROTON_IN_SI

SimTK_E_TO_COULOMB