litre - gallon, kilometre - ?

MILE
List of words for the clue litre - gallon, kilometre - ? from the crossword:
UNIT POUND KILOGRAM INCH CENTEMETRE ACRE PETROL MARATHON KM KLICK KILOMETER HECTARE YARD METRE LITER RETAIL MAGNUM L PINTS
WordClue
ACRElitre - gallon, hectare - ?
INCHlitre - gallon, centemetre - ?
UNITcarat or gallon
YARDlitre - gallon, metre - ?
FARADunit of capacitance
HERTZSI unit for frequency
LITREmile - kilometre, gallon - ?
METREgallon - litre, yard - ?
MONTHunit of time dividing the year
OUNCEunit of mass
PENNYunit of currency in various countries
POUNDlitre - gallon, kilogram - ?
QUARTunit of volume
GALLONkilometre - mile, litre - ?
HECTAREmile - kilometre, acre - ?
KILOGRAMgallon - litre, pound - ?
MARATHON42.195 kilometre road race
STERLINGpound
KILOMETREgallon - litre, mile - ?
CENTEMETREgallon - litre, inch - ?
POUNDlitre - gallon, kilogram - ?
YARDlitre - gallon, metre - ?