Conversion factors
Schedule 11 Conversion factors
(regulation 88)
Column 1 Item | Column 2 Unit of measurement | Column 3 Unit of measurement | Column 4 Conversion Factor |
|---|---|---|---|
Length | |||
1 | mile | metre | 1 609.344 |
2 | chain | metre | 22 × 0.914 4 |
3 | yard | metre | 0.914 4 |
4 | link | metre | 22 × 0.914 4/100 |
5 | foot | metre | 0.914 4/3 |
6 | inch | metre | 0.914 4/36 |
Area | |||
7 | square yard | square metre | (0.914 4)2 |
8 | square foot | square metre | (0.914 4)2/9 |
9 | square inch | square metre | (0.914 4)2/(9 × 144) |
10 | acre | square metre | 4 840 × (0.914 4)2 |
11 | rood | square metre | 1 210 × (0.914 4)2 |
12 | perch | square metre | 30.25 × (0.914 4)2 |
Mass | |||
13 | ton | kilogram | 2 240 × 0.453 592 37 |
14 | short ton (sh tn) | kilogram | 2 000 × 0.453 592 37 |
15 | hundredweight (cwt) | kilogram | 112 × 0.453 592 37 |
16 | quarter (qr) | kilogram | 28 × 0.453 592 37 |
17 | stone | kilogram | 14 × 0.453 592 37 |
18 | pound (lb) | kilogram | 0.453 592 37 |
19 | ounce (oz) | kilogram | 0.453 592 37/16 |
20 | dram (dr) | kilogram | 0.453 592 37/256 |
21 | grain (gr) | kilogram | 0.453 592 37/7 000 |
22 | slug | kilogram | 32.174 × 0.453 592 37 |
23 | troy ounce (oz tr) | kilogram | 480 × 0.453 592 37/7 000 |
24 | pennyweight (dwt) | kilogram | 24 × 0.453 592 37/7 000 |
Volume | |||
25 | cubic yard | cubic metre | (0.914 4)3 |
26 | cubic foot | cubic metre | (0.914 4)3/27 |
27 | cubic inch | cubic metre | (0.914 4)3/466 56 |
28 | gallon (gal) | cubic metre | 4.546 09 × 10–3 |
29 | quart (qt) | cubic metre | 4.546 09 × 10–3/4 |
30 | pint (pt) | cubic metre | 4.546 09 × 10–3/8 |
31 | gill | cubic metre | 4.546 09 × 10–3/32 |
32 | fluid ounce (fl oz) | cubic metre | 4.546 09 × 10–3/160 |
33 | fluid drachm (fl dr) | cubic metre | 4.546 09 × 10–3/1 280 |
34 | minim (min) | cubic metre | 4.546 09 × 10–3/76 800 |
Velocity and speed | |||
35 | mile per hour (mile/h or mph) | metre per second | 1 609.344/3 600 |
36 | mile per hour (mile/h or mph) | kilometre per hour | 1.609 344 |
37 | foot per minute (ft/min) | metre per second | 0.304 8/60 |
Work and energy | |||
38 | kilocalorie (kcal) | joule | 4.186 8 × 103 |
39 | calorie (cal) | joule | 4.186 8 |
40 | British thermal unit (Btu) | joule | 1 055. 056 |
Power | |||
41 | horsepower (hp) | watt | 745.7 |
Pressure | |||
42 | millimetre of mercury (mm Hg) | pascal | 133.322 19 |
43 | millibar (mb or mbar) | pascal | 100 |
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