Conversion of force units

Application for quick and easy conversion of force units:

meganewton (MN)
kilonewton (kN)
newton (N)
kip - force (kipf)
ton - force (tnf)
pound-force (lbf)
ounce - force (ozf)
kilogram-force (kgf)
kilopondio (kp)
grave-force (Gf)