Wednesday, July 25, 2012

Unit conversion chart



Introduction: Units may be written in full or using the agreed symbols, but no other abbreviation may be used. The letter ‘s’ is never added to symbols to indicate the plural form. A full stop is not written after symbols for units unless it occurs at the end of a sentence. When unit symbols are combined as a quotient

e.g. metre per second, it is recommended that they may be written as m/s or better still as ms^-1. Three decimal signs are used commonly internationally and they are the full point, followed by the mid-point and lastly the comma. The full point sometimes is used as a sign of multiplication and the comma for spacing the digits in large numbers; we shall be on the safe side if we use the mid-point for decimals.

Basic units of measurement: the unit of measure for length is metre and it is denoted by the letter ‘m’. The unit of measure for mass is kilogram and it is denoted by the symbol ‘kg’. The unit of measure for time is second and it is denoted by the symbol‘s’.

Unit conversion chart
1. Units of weight: SI unit for weight is kg and let us understand unit weight through weight conversions  chart. Following are the units of weight and weight  conversions chart
(i) 10 milligrams = 1 centigram 10 mg = 1 cg
(ii) 100 centigram = 1 gram 100 cg = 1 g
(iii) 100 grams = 1 kilogram 1000 g = 1 kg
(iv) 100 kilograms = 1 quintal
(v) 10 quintals = 1 metric tonne
2. Units for volume: The SI unit of volume is cubic metres (m^3). Litre is also sometimes used as the unit of volume. Following are the units of volume and volume conversions:
(i) 1 cm^3 = 1 ml = 1 cm × 1 cm × 1 cm = 10 mm × 10 mm × 10 mm = 1000 mm^3
(ii) 1 litre = 1000 ml = 1000 cm^3
(iii) 1 m^3 = 1 m × 1 m × 1 m = 100 cm × 100 cm × 100 cm = 10^6 cm^3 = 1000 litre = 1 kilolitre
(iv) 1 dm^3 = 1000 cm^3
(v) 1 m^3 = 1000 dm^3
(vi) 1 km^3 = 10^9 m^3
3. Units of length: The SI unit of length is metre.Following are the unit of length and length conversions:
(i) 10 millimetres = 1 centimetre 10 mm = 1 cm
(ii) 100 centimetres = 1 metres 100 cm = 1 m
(iii) 1000 metres = 1 kilometre 1000 m = 1 km
4. Square and cubic units
1 cm^2 = 100 mm^2 1 cm^3 = 1000 mm^3
1 m^2 = 10000 cm^2 1 m^3 = 1000000 cm^3
1 litre = 1000 cm^3
1 m^3 = 1000 litres
1 hectare = 10000 m^2.

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