Cleave Books
Conversion Calculator for Units of
Show values to . . . significant figures.

pounds & ounces
pounds [lb]
ounces [oz]
kilograms [kg]
grams [g]
milligrams [mg]
On the (first) Pounds & Ounces line, the number of pounds must be
a whole number greater than, or equal to, 1
and the ounces must be less than 16.
(Pounds with decimals can be entered on the 2nd line.)
Unvalued zeros on all numbers have been suppressed.
NO guarantee as to the accuracy of these values is given.
And they should be checked against some other source.
Additional Information
Only in the imperial system of measures are mixed units "allowed".
That is, measurements like
19 feet 4 inches
17 miles 13 yards 2 feet
5 pounds 7 ounces
3 tons 5 hundredweights 2 stones
In the SI or metric system mixed measures are "not allowed", and they are certainly not necessary. Something like
15 metres 78 centimetres 3 millimetres
is expressed as
15.783 metres
and it is so easy with a system which is based on powers of 10. Just a matter of adjusting the decimal point. It can be done on sight, no arithmetic is necessary. Contrast that with trying to do a similar thing in the imperial system.
But do we need to be able to change mixed units into a single unit? Most definitely! Costing depends upon it. So does finding areas and volumes. Using formulas and changing into other systems also require it. So, science, engineering and commerce have to deal with it regularly. It is no wonder that science "went metric" over a 100 year ago.

Perhaps it should be added that, although reference has been made here to the awkward nature of the imperial system, the measuring systems of nearly all other cultures and times have the same underlying fault in their mixed systems

We should be clear where the "fault" lies. It is not in the fact that the imperial system uses measures called pounds and ounces etc., but in the relationships between those measures.
16 ounces = 1 pound
14 pounds = 1 stone
8 stones = 1 hundredweight
Now consider the measurement of
5 stones 2 pounds 7 ounces
To change that into a single measure (for whatever purpose) some arithmetic is needed to get any one of these
5.174107 stones
72.4375 pounds
1159 ounces
IF instead we had
10 ounces = 1 pound
10 pounds = 1 stone
then the above mixed measurement could easily be read off as any of
5.27 stones
52.7 pounds
527 ounces
No contest!
There is a separate note on the abbreviations lb and oz

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Version 1.4