Conversion Factors
- 1 lbm = 0.45359237 kg
- 1 lbf = 4.4482216152605 N
- 1 ft = 0.3048 m
- 1 mile = 1.609344 km
- 1 nmi = 1.852 km
- 1 slug = 1 \(\mathrm{lbf} ~ \mathrm{s}^2 / \mathrm{ft} \approx\) 14.5939029 kg
References
Fortran Code
module conversion_factors
use, intrinsic :: iso_fortran_env, only: wp => real64 !double precision
implicit none
real(wp),parameter :: one = 1.0_wp
real(wp),parameter :: lbm2kg = 0.45359237_wp ! exact
real(wp),parameter :: lbf2N = 4.4482216152605_wp !
real(wp),parameter :: ft2m = 0.3048_wp !
real(wp),parameter :: mile2km = 1.609344_wp !
real(wp),parameter :: nmi2km = 1.852_wp !
real(wp),parameter :: slug2kg = lbf2N/ft2m ! ~ 14.593902937206362
real(wp),parameter :: kg2lbm = one/lbm2kg ! ~ 2.2046226218487757
real(wp),parameter :: N2lbf = one/lbf2N ! ~ 0.2248089430997105
real(wp),parameter :: m2ft = one/ft2m ! ~ 3.280839895013123
real(wp),parameter :: km2mile = one/mile2km ! ~ 0.621371192237334
real(wp),parameter :: km2nmi = one/nmi2km ! ~ 0.5399568034557235
real(wp),parameter :: kg2slug = one/slug2kg ! ~ 0.06852176585679176
end module conversion_factors