APPENDICES

CONVERSION FACTORS

LENGTH:

1 inch = 2.54 centimetres

1 foot = 30.48 centimetres

1 yard = 91.44 centimetres

1 mile= 1.61 kilometres

1 nautical mile (U. K.) = 1853.18 metres

1 nautical mile (international) = 1852 metres

AREA:

1 square foot = 0.093 square metre

1 square yard = 0.836 square metre

1 acre = 0.405 hectare

VOLUME:

1 cubic foot = 0.023 cubic metre

CAPACITY:

I gallon (Imperial) - 4.55 litres

1 seer (80 tolas) = 0.937 litre

1 Madras measure = 1.77 litres

WEIGHT:

1 tola = 11.66 grams

I chhatak = 58.32 grams

1 seer = 933.10 grams

1 maund = 37.32 kilograms

1 palam = 34.99 grams

1 seer (24 tolas) = 279.93 grams

1 viss = 1.40 kilograms

1 maund (Madras) = 11.20 kilograms

1 candy = 223.94 kilograms

1 ounce = 28.35 grams

1 pound = 453.59 grams

1 hundredweight = 50.80 kilograms

1 ton = 1016.05 kilograms

TEMPERATURE:

T Fahrenheit = 9/5 (T centigrade) + 32

LENGTH:

10 millimetres = 1 centimetre

100 centimetres = 1 metre

1000 metres = 1 kilometre

1852 metres = 1 nautical mile (International)

AREA:

100 square millimetres = 1 square centimetre

10,000 square centimetres = 1 square metre or centiare

100 square metres = 1 are

100 ares - 1 hectare

100 hectares or 1,000,000 square metres = 1 square kilometre

VOLUME:

1,000,000 cubic centimetres = 1 cubic metre

CAPACITY:

l000 millilitres = 1 litre 1000 litres = 1 kilolitre

WEIGHTS:

1000 milligrams = 1 gram

1000 grams = 1 kilogram

100 kilograms = 1 quintal

1000 kilograms = 1 tonne

200 milligrams = 1 carat

ABBREVIATIONS FOR METRIC UNITS

(1) DECIMAL MULTIPLES AND SUBMULTIPLES:

Prefix

Value in terms of Unit

Abbreviation

kilo

1000

k

centi

0.01 (10-2)

c

milli

0.001 (10-3)

m

micro

0.000001 (10-6)

u

(2) WEIGHTS:

Denomination

Value

Abbreviation

tonne

1000 kg

t

quintal

100 kg

q

kilogram

1kg

kg

gram

l g

g

milligram

1 mg

mg

carat

200 mg

c

(3) CAPACITY:

kilolitre

1000 1

kl

litre

1 1

l

millilitre

1 ml

ml

(4) VOLUME:

cubic centimetre

cm3

cm3

cubic millimetre

mm3

mm3

(5) LENGTH:

kilometre

1000 m

km

metre

1 m

m

centimetre

1 cm

cm

millimetre

1 mm

mm

micron

1/1000 mm or

um

--

10-2 mm

--

(6) AREA:

square kilometres

1,000,000 m3

km3

square metre

1 m2

m2

square centimetre

1 cm2

cm2

square millimetre

1 mm2

mm2

(7) LAND MEASURE:

are

100 m2

a

hectare

100 a

ha

centiare

m2

ca

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