a number you should memorize
 

if you are going to be buying old foreign silver coins then here is a conversion factor for troy ounces to grams = 0.03215..... its easy to get weight in grams, usually, for european coins, but not ounces, and all our spot prices tend to come in ounces.

Re: a number you should memorize
 

Plus if or when silver hits the moon prices will be set in grams so it will appear to be a real steal.:wink:

Re: a number you should memorize
 

easier to remember 1 troy ounce = 31.1 grams

Re: a number you should memorize
 

Avoirdupois is a weight system, utilized by the <?xml:namespace prefix = st1 ns = "urn:schemas-microsoft-com:office:smarttags" /><st1:country-region><st1:place>United States</st1:place></st1:country-region> and <st1:country-region><st1:place>England</st1:place></st1:country-region>, for measuring commodities except precious metals, precious stones and medicines. The unit weight is the pound and is equivalent to 16 ounces.


Troy weight is a system of measurement for precious metals, precious stones etc. where a pound is equivalent to 12 ounces. The name "<st1:City><st1:place>Troy</st1:place></st1:City>" is derived from <st1:place><st1:City>Troyes</st1:City>, <st1:country-region>France</st1:country-region></st1:place>, the city where the system was first used.

Re: a number you should memorize
 

Gosh, how much would a ton of GOLD cost in US $ today at $664 an ounce?

Re: a number you should memorize
 

I use this at work a lot. Simple and very handy!

http://joshmadison.com/software/convert/

http://joshmadison.com/software/convert/convertAni.gif

Re: a number you should memorize
 

A ton (short ton/2000lb , not metric) is 29,166.6667 troy ounces @ 664/oz = $19,366,666.90.
I think.

Re: a number you should memorize
 

PS - apparently a tonne of gold is not much bigger than a toaster oven:



<TABLE borderColor=#2f61ac cellSpacing=0 cellPadding=0 align=right border=1><CENTER><TBODY><TR><TD>https://www.indiabullion.com/images/goldtonne.gif </TD></TR></CENTER><TR><TD bgColor=#b1d6ff height=3></TD></TR></TBODY></TABLE>Gold is traditionally weighed in Troy Ounces (31.1035 grammes). It has a specific gravity of 19.3, meaning that it is 19.3 times heavier than water. So gold weighs 19.3 kilograms per litre. With the density of gold at 19.32 g/cm3, a troy ounce of gold would have a volume of 1.64 cm3. A tonne of gold would therefore have a volume of 51, 760 cm3, which would be equivalent to a cube of side 37.27cm (Approx. 1' 3'').


https://www.indiabullion.com/gold_history.php

Re: a number you should memorize
 

:offtopic::offtopic::offtopic:

Not on topic.......But comes in handy.

For tipping at restaurants.

Under $30 bill. Round up to nearest dollar. Multiply by 2. Insert decimal point one place to the right.
Example,,,,, Bill equals 17.43
Round to 18
times 2 = 36
Insert decimal 3.60 is tip amount
This will keep you around the 20% mark.

Over $30.00 bill. Move decimal one place to the left. Multiply remainder by 2. That is tip amount.
Example,,,,,,,, Bill equals 127.56
Move decimal to left one place 12
Multiply remainder by 2 24.00 is tip amount
This will keep you in the 17 - 21% range.

Re: a number you should memorize
 

I dont leave 20 unless they do a good job, I am in the midwest and 15 is expected

you do that easy, just move decimal, and add half again to that number.

as I have gotten older my mental math is way better. I can do multiplication in my head now thats far more complicated than what I could when I was younger. sometimes if I am anxious about something I do math in my head to settle. is that crazy? :no_ma:

Re: a number you should memorize
 

I have a TI89 graphing calculator; just define _troz as 31,104 grams and divide by the unit to get a scalar result in troy oz.

Then again, I'm a bit of a nerd.

As for mental math, I find it's just as easy just to keep a pen handy and work it out on a napkin.

Re: a number you should memorize
 

Sheesh...too much to remember.
I just take 10% of the bill x 2
Much simpler for me.

Re: a number you should memorize
 

Here is my favorite conversion website I use:

http://www.convert-me.com/en/