Last Updated: 1 December 2016

[NTM 13,265] Conversion factors53 

53
Where measurements are expressed in a system of units other than the International System of Units (SI), whether pursuant to these Regulations or not—
  • (a)a name and symbol expressed in this Part, or in any publication referred to in this Part, that appears to be similar to the name and symbol of the unit of measurement so used, shall be deemed to be that unit of measurement; and
  • (b)the conversion factors to the International System of Units (SI) stated in this Part shall apply; or
  • (c)where a conversion factor is not stated in these Regulations, the value of the unit of measurement shall be determined from the publication of the Standards Association of Australia entitled Australian Standard 1376-1973 “Conversion Factors” and if the value of the unit of measurement is not therein available, from the publication of the British Standards Institute entitled British Standard 350 — 1974 “Conversion Factors and Tables”, or if the value of the unit of measurement is not therein available from any publication deemed by the Director to be appropriate.

    Conversion Factors

    Physical QuantityUnit of measurementConversion factor to metresSymbol
    lengthinternational
    nautical mile
    micron
    mile
    chain
    yard
    foot
    link
    inch

    1852
    10–6
    1609.344
    22 (0.9144)
    0.9144
    1/3 (0.9144)
    22 (0.9144)/100
    1 (0.9144)/36

    n mile
    μ
    .........................
    ch
    yd
    ft or ‘
    Ik
    in or ”
    square metres
    areasquare yard
    square foot
    square inch
    acre
    rood
    perch
    (0.9144)2
    (0.9144)2/9
    (0.9144)2/1296
    4840 (0.9144)2
    1210 (0.9144)2
    30.25 (0.9144)2
    sq yd or yd2
    sq ft or ft2
    sq in or in2
    ac
    rd
    p
    kilograms
    Masston
    short ton
    hundredweight
    quarter
    stone
    pound
    ounce
    dram
    grain
    slug
    troy ounce
    pennyweight
    2240 (0.453 592 37)
    2000 (0.453 592 37)
    112 (0.453 592 37)
    28 (0.453 592 37)
    14 (0.453 592 37)
    1 (0.453 592 37)
    1/16 (0.453 592 37)
    1/256 (0.453 592 37)
    1/7000 (0.453 592 37)
    32.174 (0.453 592 37)
    480/7000 (0.453 592 37)
    24/7000 (0.453 592 37)
    .........................
    sh tn
    cwt
    qr
    .........................
    lb
    oz
    dr
    gr
    .........................

    oz tr dwt
    cubic metres
    Volumecubic yard
    cubic foot
    cubic inch
    gallon
    quart
    pint
    gill
    fluid ounce
    fluid drachm
    minim
    (0.9144)3
    1/27(0.9144)3
    1/46656 (0.9144)3
    1x 4.546 09 x 10–3
    1/4 x 4.546 09 x 10–3
    1/8 x 4.546 09 x 10–3
    1/32 x 4.546 09 x 10–3
    1/160 x 4.546 09 x 10–3
    1/1280 x 4.546 09 x 10–3
    1/76800 x 4.546 09 x 10–3
    cu yd or yd3
    cu ft or ft3
    cu in or in3
    gal
    qt
    pt
    .........................
    fl oz
    fl dr
    min
    metres per second
    Velocity and
    speed
    knot
    mile per hour
    foot per minute
    463/900
    1609.334/3600
    0.3048/60
    kn
    m/h or mph
    ft/min
    joules
    Work and Energykilocalorie
    calorie
    British thermal unit
    gigaelectronvolt
    megaelectronvolt
    kiloelectronvolt
    electronvolt
    4.1868 x 103
    4.1868
    1055.056
    1.602 189 2 x l0–10
    1.602 189 2 x 10–13
    1.602 189 2 x 10–16
    1.602 189 2 x 10–19
    kcal
    cal
    Btu
    GeV
    MeV
    KeV
    eV
    watts
    Powerhorsepower745.7hp
    pascals
    Pressuremillibar
    millimetre of
    mercury
    100
    133.322 19
    bar
    mmHg
    pascal seconds
    Dynamic
    Viscosity
    poise
    centipoise
    10–1
    10–3
    P
    cP
    square metres per second
    Kinematic
    Viscosity
    stokes
    centistokes
    10–4
    10–6
    St
    cSt
    becquerels
    Activity
    (radionuclides)
    curie3.7 x 1010μCi
    coulombs per kilogram
    Exposure
    (ionising
    radiation)
    roentgen0.258 x 10–3R
    grays
    Absorbed dose,
    Absorbed dose
    index, Kerma,
    Specific energy
    imparted
    (ionising
    radiation)
    10–2rad

[reg 53 am LN 99 of 2016 reg 178, effective 1 December 2016]