Weight    
    Ibs to Kilograms divide by 2.205
    Kilograms to lbs multiply by 2.205
    tons to tonnes multiply by  1.016
    tonnes to tons divide by  1.016
    cwts to kilograms multiply by 50.794
    kilograms to cwts divide by 50.794 

     

    Area    
    acres to hectares divide by 2.471
    hectares to acres multiplyby 2.471
    square yards to square metres multiply by 0.8361
    square metres to square yards divide by 0.8361