13

13/64”

20.6 mm

12

54/64”

21.4 mm

11.5

57/64”

22.6 mm

11

61/64”

24.2 mm

10.5

1”

25.4 mm

10

1-3/64”

26.6 mm

9.6

1-7/64”

28.2 mm

9

1-11/64”

29.8 mm

Row size

Imperial

Metric

30

3-5/16”

85.3 mm

36

3-1/8”

80.7 mm

42

2-15/16”

75.5 mm

48

2-13/16”

71.3 mm

50

2-3/4”

70.2 mm

54

2-11/16”

69.0 mm

56

2-5/8”

66.5 mm

60

2-5/8”

66.5 mm

66

2-9/16”

65.5 mm

72

2-7/16”

62.5 mm

80

2-5/16”

58.8 mm

84

2-3/16”

55.6 mm

80

3”

76.2 mm

2-15/16”

74.6 mm

90

2-15/16”

74.6 mm

2-7/8”

73.0 mm

100

2-7/8”

73.0 mm

2-13/16”

71.1 mm

105

2-27/32”

72.0 mm

110

2-13/16”

71.1 mm

2-3/4”

69.9 mm

120

2-3/4”

69.9 mm

2-11/16”

67.9 mm

135

2-5/8”

66.7 mm

2-9/16”

64.8 mm

150

2-1/2”

63.5 mm

2-1/2”

63.5 mm

165

2-3/8”

60.3 mm

2-7/16”

61.6 mm

180

2-5/16”

58.7 mm

2-3/6”

58.7 mm

56

89

90

90

92

3-5/8"

92.1

64

85

87

87

89

3-1/2"

88.9

72

82

83

84

87

3-7/16"

86.9

80

78

80

81

84

3-3/8"

85.7

88

76

77

77

81

3-1/4"

82.6

100

73

75

75

77

3-1/16"

77.4

113

70

71

72

74

2-15/16"

74.6

125

68

68

70

72

2-7/8"

73

138

65

66

67

70

2-3/4"

69.9

150

63

63

64

68

2-5/8"

66.7

inches

2.5

centimetres (cm)

feet

30

centimetres (cm)

feet

0.3

metres (m)

yards

0.9

metres (m)

miles

1.6

kilometres (km)

AREA

square inches

6.5

square centimetres (cm²)

square feet

0.09

square metres (m²)

acres

0.40

hectares (ha)

VOLUME

cubic inches

16

cubic centimetres (cm³)

cubic feet

0.03

cubic metres (m³)

cubic yards

0.8

cubic metres (m³)

fluid ounces

28

millilitres (mL)

pints

0.57

litres (L)

quarts

1.1

litres (L)

gallons (Imperial)

4.5

litres (L)

gallons (U.S.)

3.75

litres (L)

bushels

0.36

hectolitres (hL)

WEIGHT

ounces

28

grams (g)

pounds

0.45

kilograms (kg)

short tons

0.9

tonnes (t)

TEMPERATURE

Degrees

Degrees

Fahrenheit           (^oF-32)

0.56

Celsius (^oC)

POWER

horsepower

750

watts (w)

horsepower

0.75

kilowatts (kw)

oz./acre

70

g/ha

lb./acre

1.12

kg/ha

bu./acre

0.9

hL/ha

tons/acre

2.24

t/ha

fl. oz./acre

70

mL/ha

pt./acre

1.4

L/ha

qt./acre

2.8

L/ha

gal./acre

11.2

L/ha

gal./acre (U.S.)

9.35

L/ha

plants/acre

2.47

plants/ha

oz./gal.

6.2

mL/L

lb./gal.

0.1

kg/L

oz./sq.ft.

305

g/m²

lb./sq.ft

4.9

kg/m²

oz./ft.row

93

g/m row

lb./ft.row

1.5

kg/m row

ft./sec.

0.3

m/s

m.p.h.

1.6

km/h

p.s.i.

6.9

kPa

1

Imperial gallon = 4 quarts = 8 pints = 160 fluid ounces = 10 pounds of water = approximately 1.2 U.S. gallons

1

U.S. gallon = .8345 or approximately 5/6 Imperial gallon = 8.3 pounds

1

Imperial pint = 20 fluid ounces = 570 mL

1

U.S. pint = 16 fluid ounces = 475 mL

1

pound = 16 ounces

1

tablespoon = 3 teaspoons = 14 mL

2

tablespoons = 1 fluid ounce = 28 mL

1

pound in 100,000 gallons of water = 1 ppm (part per million)

1

mile = 5,280 feet = 1,760 yards

1

yard = 3 feet = 36 inches

1

foot = 12 inches

1

acre = approximately 209 by 209 feet or 43,560 square feet

1

square yard = 9 square feet

1

square foot = 144 square inches

1

mile an hour = 88 feet a minute

1

cubic yd = 27 cubic feet