Managing Livestock Manures 4: Managing Manure on Organic Farms

Appendix 3. Conversion factors


Volumes

  • 1 imperial gallon (gall) = 0.0045 cubic metre (m3)
    1 m3 = 220 gall

  • 1 imperial gallon (gall) = 4.55 litres (l)
    1 litre = 0.22 gallons

Length

  • 1 foot (ft) = 0.31 metre (m)
    1 m = 3.28 ft

Speed

  • 1 mile per hour (mph) = 1.61 kilometres per hour (km/h)
    1 km/h = 0.62 mph

  • 1 mile per hour (mph) = 0.45 metres per second (m/s)
    1 m/s = 2.24 mph

Application rates

  • 1 imperial gallon per acre (gall/ac) = 0.011 cubic metres per hectare (m3/ha)
    1 m3/ha = 90 gall/ac

  • 1 ton per acre (ton/ac) = 2.50 tonnes/hectare (t/ha)
    1 t/ha = 0.40 ton/ac

Area

  • 1 acre (ac) = 0.405 hectares (ha)
    1 ha = 2.47 ac

Nutrients

  • 1 unit per acre (unit/ac) = 1.25 kilograms/hectare (kg/ha)
    1 kg/ha = 0.8 units/ac

  • 1 kg P = 2.29 kg P2O5
    1 kg P2O5 = 0.44 kg P
    1 kg K = 1.20 kg K2O
    1 kg K2O = 0.83 kg K
    1 kg S = 2.50 kg SO3
    1 kg SO3 = 0.40 kg S
    1 kg Mg = 1.66 kg MgO
    1 kg MgO = 0.60 kg Mg

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