1 Acre = 0.4047 Hectares
1 Hectare = 2.471 Acre
1 Sq. Cm = 0.155 Sq. In
1 Sq. In = 6.4516 Sq. Cm
1 Sq. Foot = 0.0929 Sq. Mt
1 Sq. Metre = 10.7639 Sq. Feet
1 Sq. Km = 0.386 Sq Mile
1 Sq. Mile = 2.58999 Sq. Km
1 Sq. Yard = 0.836 Sq. Mt
1 cm = 0.3937 In
1 In = 2.54 cm
1 Foot = 0.3048 m
1 m = 3.2808 Foot
1 km = 0.6214 Miles
1 Mile = 1.6093 km
1 m = 1.0936 Yards
1 Yard = 0.9144 m
1 BTU = 252.0 Calories
1 Calorie = 0.003968 BTU
1 BTU 1055.06 Joules
1 Joule 0.000948 BTU
1 Calorie 4.186 Joules
1 Joule 0.238892 Calories
1 English horsepower (hp) = 550ft*lbf/s = 745.7 Watt
1 metric horsepower (german: PS pferdestärke, french: CV cheval-vapeur)
=75kpm/s = 735.5 W
1 Fl. Oz. 0.0284 L
1 L 35.1961 Fl. Oz.
1 UK Gall. 1.2 US Gall.
1 US Gall 0.83333 UK Gall.
1 UK Gall. 4.546 L
1 L 0.220 UK Gall
1 L 1.7598 Pt.
1 Pt. 0.5680 L
1 Cub. Mt. 1.308 Cub. Yd.
1 Cub. Yd. 0.764 Cub. Mt.
1 UK Pint 20 fl. oz
1 US Cup 8 fl. oz
1 US Pint 2 Cups = 16 fl. oz
1 Gram = 0.0352 Oz
1 Ounce = 28.3495 g
1 Cwt = 50.8023 Kg
1 Kg = 0.0197 Cwt
1 Kg = 2.204 Lb
1 Lb = 0.45408 Kg
1 Lb = 0.071429 St
1 St = 14 Lb
1 Tonne = 0.9842 Tons
1 Ton = 1.016 Tonnes