Pond Size:
Length		foot = yard/(3) inch = yard/(36) centimetre = metre/(100) metre = metre yard = yard
Width		foot = yard/(3) inch = yard/(36) centimetre = metre/(100) metre = metre yard = yard
Depth		foot = yard/(3) inch = yard/(36) centimetre = metre/(100) metre = metre yard = yard
Sides		sheer = l*w*d steep = (l*w*d)/2 shallow = (l*w*d)/3
gives you:
Surface area		sq foot = sqyard/(3*3) sq inch = sqyard/(36*36) sq centimetre = sqmetre/(100*100) sq metre = sqmetre sq yard = sqyard
Volume		cu foot = cuyard/(3*3*3) cu inch = cuyard/(36*36*36) cu centimetre = cumetre/(100*100*100) litre = cumetre/(10*10*10) cu metre = cumetre cu yard = cuyard
Capacity		UK gallon = v*219.96965 litre = v*1000 US gallon = v*264.17
Weight		pound = v*2204.6 UK ton = v*0.9842 kilogram = v*1000 tonne = v US ton = v*1.1023