That’s the problem with it really….
No one under 55 really understands imperial that well.
Me? I order things by weight in grams. Ounces and pounds literally mean nothing to me at all. I buy milk and other stuff like that in litres
I would find it hard to go imperial…
It's really straightforward:
weight
437.5 grains in an ounce
16 ounces in a pound
14 pounds in a stone
8 stone in a hundredweight
20 hundredweight in a ton.
money
12 pence in a shilling
20 shillings in a pound
21 shillings in a guinea
So its a piece of piss to calculate things. If something costs 7 pence an ounce and you need to know the cost of 3st 9lbs 3oz you just do the following:
First turn everything into ounces
3st = 3x14x16 ounces = 672oz
9lbs = 9x16 ounces = 144oz
3 oz
Add them together 672 + 144 + 3 = 819 oz
multiply by pence/ounce
819 x 7 = 5,733 pence.
divide by 12 to find number of shillings
5,733/12 = 477.75
0.75 shillings = 0.75 x 12 = 9 pence
Divide 477 by 20 to find number of pounds
477/20 = 23.85
0.85 pounds = 0.85 x 20 = 17 shillings
So 3st 9lbs 3oz at 7 pence an ounce = £23 17s 9d
Couldn't be easier.
Unless you have 23.219 kg at 101p/kg*
23.219 g x 101p/kg = £23 52p
So much easier with the old money...
For people under 55 this is really what we had to do to calculate cost by weight in imperial.
*1d (old penny) = £1/244 1p (new penny) = £1/100 so 7d/oz = 101p/kg