Annex I Units of Measure: Code elements listed by quantities - UNECE
Annex I Units of Measure: Code elements listed by quantities - UNECE
Annex I Units of Measure: Code elements listed by quantities - UNECE
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<strong>Code</strong>s for <strong>Units</strong> <strong>of</strong> <strong>Measure</strong> used in International Trade<br />
<strong>Units</strong> <strong>of</strong> <strong>Measure</strong>: <strong>Code</strong> <strong>elements</strong> <strong>listed</strong> <strong>by</strong> <strong>quantities</strong><br />
Quantity<br />
Level<br />
Cat.<br />
Use<br />
Id.<br />
Name<br />
Conversion factors to SI<br />
units<br />
(1 unit equals)<br />
Represen.<br />
Symbol<br />
Cross<br />
ref.<br />
1 hour 3600 s h 83<br />
time 1 day 86 400 s d 84<br />
1S kilosecond ks 85<br />
1S millisecond ms 86<br />
1S microsecond µs 87<br />
1S nanosecond ns 88<br />
2 week 89<br />
2 month 90<br />
2 year a 91<br />
2 tropical year 31 556 926 s a trop 92<br />
angular velocity 1 radian per second rad/s 93<br />
angular acceleration 1 radian per second squared rad/s² 94<br />
velocity 1 metre per second m/s 95<br />
phase velocity 1S kilometre per hour 0,277 778 m/s km/h 96<br />
group velocity 1S millimetre per second mm/s 97<br />
1S centimetre per second cm/s 98<br />
1M metre per minute m/min 99<br />
1 knot 0,514 444 m/s kn 100<br />
2 foot per minute ft/min 101<br />
2 inch per second (vibration) in/s 102<br />
2 inch per second (linear<br />
speed)<br />
in/s 103<br />
2 foot per second 0,304 8 m/s (exactly) ft/s 104<br />
2 mile per hour 0,447 04 m/s (exactly) mile/h 105<br />
acceleration 1 metre per second squared m/s ² 106<br />
acceleration <strong>of</strong> free fall 1S gal 0,01m/s² (exactly) Gal 107<br />
acceleration due to<br />
gravity<br />
1M milligal mGal 108<br />
2 foot per second squared 0,304 8 m/s² (exactly) ft/s ² 109<br />
2 inch per second squared<br />
(acceleration)<br />
2 inch per second squared<br />
(vibration acceleration)<br />
in/s 2 110<br />
in/s 2 111<br />
curvature 1 reciprocal metre m -¹ 112<br />
Periodic and related<br />
phenomena<br />
frequency 1 hertz Hz 114<br />
1S kilohertz kHz 115<br />
1S megahertz MHz 116<br />
1S terahertz THz 117<br />
1S gigahertz GHz 118<br />
rotational frequency 1 reciprocal second s -¹ 119<br />
Recommendation 20 149
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