Metric Conversion Factors

Linear Measurements

Table 1: Metric Conversion Factors* (Approximate)

Metric Unit	Metric to Imperial	Imperial Unit	Imperial to Metric	Metric Unit
centimetre (cm)	x 0.39	inch	x 2.54	centimetre (cm)

*EXAMPLE: To convert centimetres to inches, multiply by 0.39; conversely, to convert inches to centimetres, multiply by 2.54. CAUTION: Herbicide labels are in metric units only. Conversion between the Metric and Imperial system may result in confusion. It is recommended to use metric units only.

Area Measurements

Metric Unit	Metric to Imperial	Imperial Unit	Imperial to Metric	Metric Unit
square metre (m2)	x 1.2	square yard	x 0.84	square metre (m2)
hectare (ha)	x 2.5	acres	x 0.4	hectare (ha)

Liquid Volume Measurements

Metric Unit	Metric to Imperial	Imperial Unit	Imperial to Metric	Metric Unit
Volume litre (L)	x 0.22	Volume gallon	x 4.55	Volume litre (L)

Air Pressure Measurements

Metric Unit	Metric to Imperial	Imperial Unit	Imperial to Metric	Metric Unit
Pressure kilopascals (kPa)	x 0.14	Pressure psi	x 6.9	Pressure kilopascals (kPa)

Weight Measurements

Metric Unit	Metric to Imperial	Imperial Unit	Imperial to Metric	Metric Unit
gram (g)	x 0.04	ounce (oz)	x 28.35	gram (g)
kilogram (kg)	x 2.2	pound (lb)	x 0.454	kilogram (kg)

Agriculture Scale Measurements

Table 6: Metric Conversion Factors, Agriculture (Approximate)

Metric Unit	Metric to Imperial	Imperial Unit	Imperial to Metric	Metric Unit
litres per hectare (L/ha)	x 0.089	gallons/acre	x 11.23	litres per hectare (L/ha)
litres per hectare (L/ha)	x 0.357	quarts/acre	x 2.81	litres per hectare (L/ha)
litres per hectare (L/ha)	x 0.71	pints/acre	x 1.41	litres per hectare (L/ha)
millilitres per hectare (mL/ha)	x 0.014	fluid ounces (fl. oz)/acre	x 70.22	millilitres per hectare (mL/ha)
kilograms per hectare (kg/ha)	x 0.89	pounds (lb)/acre	x 1.12	kilograms per hectare (kg/ha)
grams per hectare (g/ha)	x 0.014	ounces (oz)/acre	x 70	grams per hectare (g/ha)