Lbf

Product of avoirdupois pound and standard gravity

The standard values of acceleration of the standard gravitational field (g_n) and the international avoirdupois pound (lb) result in a pound-force equal to 32.174049 ⁠lb⋅ft/s⁠ (4.4482216152605 N). $${\displaystyle {\begin{aligned}1\,{\text{lbf}}&=1\,{\text{lb}}\times g_{\text{n}}\\&=1\,{\text{lb}}\times 9.806\,65\,{\tfrac {\text{m}}{{\text{s}}^{2}}}/0.3048\,{\tfrac {\text{m}}{\text{ft}}}\\&\approx 1\,{\text{lb}}\times 32.174\,049\,\mathrm {\tfrac {ft}{s^{2}}} \\&\approx 32.174\,049\,\mathrm {\tfrac {lb{\cdot }ft}{s^{2}}} \\1\,{\text{lbf}}&=1\,{\text{lb}}\times 0.453\,592\,37\,{\tfrac {\text{kg}}{\text{lb}}}\times g_{\text{n}}\\&=0.453\,592\,37\,{\text{kg}}\times 9.806\,65\,{\tfrac {\text{m}}{{\text{s}}^{2}}}\\&=4.448\,221\,615\,2605\,{\text{N}}.\end{aligned}}}$$