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How many quarters in a cup?
Posted by: Black
Date: July 21, 2014 11:05AM
I have a large quantity of quarters to count. Not finding the answer in a search.... I don't need an exact number, but it would be helpful to know about how many quarters fill an 8-0z container. Thanks!




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Re: How many quarters in a cup?
Posted by: C(-)ris
Date: July 21, 2014 11:12AM
Better way to do it would be by weight with your USB postage scale.



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Re: How many quarters in a cup?
Posted by: Robert M
Date: July 21, 2014 11:12AM
Black,

I wish you'd asked this question last week! My wife and I keep a jar 'o change and I could've filled an 8 oz container with quarters and give you a tally. The problem is it wouldn't be remotely accurate because it's very much depending on how the quarters are placed in the container and the size and shape of the container. Just tossing them in will result in one tally. Neatly placing them in will result in a noticeably different number.

Robert
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Re: How many quarters in a cup?
Posted by: GGD
Date: July 21, 2014 11:20AM
Quote
C(-)ris
Better way to do it would be by weight with your USB postage scale.

That's what I've done in the past. Here are the official weights of coins.

[www.usmint.gov]

But that's when brand new, I would take a sample of say 10 quarters and weigh them to get a baseline and account for scale inaccuracies, and then use simple division to calculate the quantities of larger weights.



Edited 1 time(s). Last edit at 07/21/2014 11:21AM by GGD.
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Re: How many quarters in a cup?
Posted by: Lux Interior
Date: July 21, 2014 11:21AM
I second the weight method if you have the scale.

If not, fill a cup with quarters and count ho many are in it. Shouldn't take that long.
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Re: How many quarters in a cup?
Posted by: MGS_forgot_password
Date: July 21, 2014 11:21AM
Weigh it, each quarter weighs 5.67 grams, according to these guys.

(be sure to account for the weight of the container)

smiling smiley
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Re: How many quarters in a cup?
Posted by: space-time
Date: July 21, 2014 11:42AM
Mail all to me and I will give you exact figures.
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Re: How many quarters in a cup?
Posted by: bazookaman
Date: July 21, 2014 11:45AM
Wow. This is WAY too many responses that aren't a single number.




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Re: How many quarters in a cup?
Posted by: mikebw
Date: July 21, 2014 11:48AM
ALL OF THEM.
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Re: How many quarters in a cup?
Posted by: freeradical
Date: July 21, 2014 11:48AM
Quote
space-time
Mail all to me and I will give you exact figures.

:-)
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Re: How many quarters in a cup?
Posted by: billb
Date: July 21, 2014 11:50AM
approx 180 quarters to a cup
( shaken in to provide an approximation of settling of contents )





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Re: How many quarters in a cup?
Posted by: Filliam H. Muffman
Date: July 21, 2014 11:54AM
It depends on the shape of the cup.



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Re: How many quarters in a cup?
Posted by: cbelt3
Date: July 21, 2014 12:16PM
emoticon-animal-004 Wow ! Billb gets the award for actual experimental measurements ! hail smiley
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Re: How many quarters in a cup?
Posted by: Black
Date: July 21, 2014 12:17PM
Quote
billb
approx 180 quarters to a cup
( shaken in to provide an approximation of settling of contents )


Perfect, thanks!
I tried counting a few times and figured about $100 per 2-cup pyrex once and closer to $80 the second time--- so $90 makes sense.




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Re: How many quarters in a cup?
Posted by: artie67
Date: July 21, 2014 12:21PM
A $10 roll of quarters weigh 8.2 oz. So, roughly $20 per lb.
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Re: How many quarters in a cup?
Posted by: Black
Date: July 21, 2014 12:27PM
My postal scale stopped working reliably a while back (as the reviews predicted when I bought it) and I haven't been able to bring myself to throw more money down that hole.




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Re: How many quarters in a cup?
Posted by: Will Collier
Date: July 21, 2014 12:27PM
The answer is...
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Re: How many quarters in a cup?
Posted by: billb
Date: July 21, 2014 12:34PM
$100.00 in a 24 ounce spaghetti jar two fingers shy of the top
I have a mac mini's worth of quarters waiting on Apple.
I'm losing interest waiting Tim.





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Re: How many quarters in a cup?
Posted by: Dennis R
Date: July 21, 2014 12:36PM
There are four quarters to one cup!smiley-laughing001
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Re: How many quarters in a cup?
Posted by: Filliam H. Muffman
Date: July 21, 2014 01:05PM
One quarter is 0.003419 cups, so the upper limit is $73, assuming your measuring container is a tube the diameter just large enough to fit guarters.



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Re: How many quarters in a cup?
Posted by: Rick-o
Date: July 21, 2014 01:08PM
Quote
Dennis R
There are four quarters to one cup!smiley-laughing001

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Re: How many quarters in a cup?
Posted by: Black
Date: July 21, 2014 01:47PM
Quote
Filliam H. Muffman
One quarter is 0.003419 cups, so the upper limit is $73, assuming your measuring container is a tube the diameter just large enough to fit guarters.
I guess I'm looking for whatever baking term is equivalent to a "loose" cup then.
But I'm pretty happy with Billb's answer of $45 cup.




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Re: How many quarters in a cup?
Posted by: Mini 9
Date: July 21, 2014 02:02PM
CoinStar. Get money deposited into some online account.
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Re: How many quarters in a cup?
Posted by: Black
Date: July 21, 2014 02:06PM
Quote
Mini 9
CoinStar. Get money deposited into some online account.






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Re: How many quarters in a cup?
Posted by: Buzz
Date: July 21, 2014 02:17PM
weighing is the best option after actually counting... the various size, shape, and material components of the vessel holding the coins can dramatically affect the amount of quarters contained therein... maybe I should start taking bids on my last NIB RSUSBPS :-). I bought a bunch during the frenzy, then saw another one awhile later and picked it up as a spare. Initially gave 'em to family and friends, and thankfully all that I'm aware of still work OK. We have one that gets used regularly, and another only occasionally, though it is a convenience, but a weighing coins thread perked the ears of the on atop the Mac Pro. It really boils down to how exact Black desires the count to be.



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Re: How many quarters in a cup?
Posted by: Filliam H. Muffman
Date: July 21, 2014 04:33PM
Quote
Black
Quote
Filliam H. Muffman
One quarter is 0.003419 cups, so the upper limit is $73, assuming your measuring container is a tube the diameter just large enough to fit guarters.
I guess I'm looking for whatever baking term is equivalent to a "loose" cup then.
But I'm pretty happy with Billb's answer of $45 cup.

Yeah, I never was one that enjoyed the "question for the interested student." A real math person could come up with a pretty exact number based on how much water poured out from a 5gal jug if it was completely covering the coins.



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Re: How many quarters in a cup?
Posted by: eustacetilley
Date: July 21, 2014 04:41PM
We're talking about two quantities here- a coin with a certain mass and volume, and a container that only concerns itself with volume.
So we can toss anything concerning mass right out of the window, along with the USB scale that it rode in on.
There's a hard way, and an easy way, to come up with a solution:

The hard way- A cup holds 14.4375 cubic inches, and say for the sake of convenience, and since no other description was given, let's just assume that this particular cup is just a hair's width over 0.955 inches in diameter, and ~15.1178 inches tall. Since a quarter is, by law, ~0.955 inches in diameter, (See what I did there?), and ~0.0689 in thickness, there will be precisely 214.4166 quarters in this filled cup.
Make it 214 even, to account for the thickness of various kinds of hair.
Note that this was the hard way, and all theoretical at this point, anyway.

The easy way- Take a finely graduated and etched measuring volume, we won't call it a cup, since it clearly isn't a cup, because it needs to hold two cups. Let's call it a Pint... cup.
Fill it with precisely one cup of water, and start adding quarters until the meniscus reaches the two cup mark, occasionally swirling to free trapped air bubbles.
Dump, dry, and count the newly cleansed quarters. (Be sure to give the container a thorough washing afterwards; we have no idea where those quarters have been.)

If the answer turns out to be precisely 214 quarters, I will be very much surprised.

Eustace
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Re: How many quarters in a cup?
Posted by: Black
Date: July 21, 2014 05:34PM
Quote
eustacetilley
We're talking about two quantities here- a coin with a certain mass and volume, and a container that only concerns itself with volume.
So we can toss anything concerning mass right out of the window, along with the USB scale that it rode in on.
There's a hard way, and an easy way, to come up with a solution:

The hard way- A cup holds 14.4375 cubic inches, and say for the sake of convenience, and since no other description was given, let's just assume that this particular cup is just a hair's width over 0.955 inches in diameter, and ~15.1178 inches tall. Since a quarter is, by law, ~0.955 inches in diameter, (See what I did there?), and ~0.0689 in thickness, there will be precisely 214.4166 quarters in this filled cup.
Make it 214 even, to account for the thickness of various kinds of hair.
Note that this was the hard way, and all theoretical at this point, anyway.

The easy way- Take a finely graduated and etched measuring volume, we won't call it a cup, since it clearly isn't a cup, because it needs to hold two cups. Let's call it a Pint... cup.
Fill it with precisely one cup of water, and start adding quarters until the meniscus reaches the two cup mark, occasionally swirling to free trapped air bubbles.
Dump, dry, and count the newly cleansed quarters. (Be sure to give the container a thorough washing afterwards; we have no idea where those quarters have been.)

If the answer turns out to be precisely 214 quarters, I will be very much surprised.

Eustace

Well, the goal was to avoid wasting my time counting quarters....




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Re: How many quarters in a cup?
Posted by: space-time
Date: July 21, 2014 06:28PM
Well, the goal was to avoid wasting my time counting quarters....

you don't have to count them; stack them.

Start with stack of 4 coins ($1). Make 2 more stack the same height and put the last 2 stacks on top of each other ($2). So now you have 2 stacks, one with 4 coins and one with 8 coins.

make 2 more stacks like the last one and stack them, that is $4. repeat the process so you end up with stacks worth $8, $16, and so one. when you run out of coins to make tall stacks, make smaller stacks again.

then just add up the numbers.
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Re: How many quarters in a cup?
Posted by: MarkD
Date: July 21, 2014 06:51PM
I take them to my credit union and use the coin machine there. Produces a receipt to be deposited or cash given for the amount of coins. Lots of places will take them in the back and run through a coin machine in the back and do the same thing without cost.
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Re: How many quarters in a cup?
Posted by: billb
Date: July 21, 2014 07:18PM




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Re: How many quarters in a cup?
Posted by: Black
Date: July 21, 2014 07:27PM
Quote
space-time
Well, the goal was to avoid wasting my time counting quarters....

you don't have to count them; stack them.

Start with stack of 4 coins ($1). Make 2 more stack the same height and put the last 2 stacks on top of each other ($2). So now you have 2 stacks, one with 4 coins and one with 8 coins.

make 2 more stacks like the last one and stack them, that is $4. repeat the process so you end up with stacks worth $8, $16, and so one. when you run out of coins to make tall stacks, make smaller stacks again.

then just add up the numbers.
I started something similar but it took way too long.
We're talking about ~$350 here, and I don't need an exact number.




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Re: How many quarters in a cup?
Posted by: Black
Date: July 21, 2014 07:28PM
Quote
MarkD
I take them to my credit union and use the coin machine there. Produces a receipt to be deposited or cash given for the amount of coins. Lots of places will take them in the back and run through a coin machine in the back and do the same thing without cost.

You got this one bill?




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Re: How many quarters in a cup?
Posted by: billb
Date: July 21, 2014 07:46PM
Quote
Black
Quote
MarkD
I take them to my credit union and use the coin machine there. Produces a receipt to be deposited or cash given for the amount of coins. Lots of places will take them in the back and run through a coin machine in the back and do the same thing without cost.

You got this one bill?

Yup, next time I'll let Mark take a cup full to the bank.



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Re: How many quarters in a cup?
Posted by: Mini 9
Date: July 21, 2014 08:53PM
coinstar and done
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Re: How many quarters in a cup?
Posted by: Black
Date: July 21, 2014 09:11PM
Quote
Mini 9
coinstar and done
Assuming 20 minutes ride to the CVS where the machine is, 20 minutes to feed the coins in, and 20 minutes ride home. it would take me less time to count them one by one.




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Re: How many quarters in a cup?
Posted by: Black
Date: July 21, 2014 09:14PM
Oh, hey internet search engines-- here's that answer that you were missing:
Q: How many U.S. quarters fit in an 8 oz cup?
A: Approximately 180, or $45 worth.




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Re: How many quarters in a cup?
Posted by: billb
Date: July 21, 2014 09:38PM
you mean I could have cheated and not counted ?



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Re: How many quarters in a cup?
Posted by: Lux Interior
Date: July 22, 2014 07:37AM
Quote
Black
We're talking about ~$350 here, and I don't need an exact number.

uhhh....

Never mind.
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Re: How many quarters in a cup?
Posted by: rexs
Date: July 22, 2014 01:25PM
As long as you don't need an exact amount , you have about $350 total.

I have the same number of quarters. How many would that be in HO Scale?
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Re: How many quarters in a cup?
Posted by: eustacetilley
Date: July 22, 2014 02:00PM
Quote
rexs
As long as you don't need an exact amount , you have about $350 total.

I have the same number of quarters. How many would that be in HO Scale?

Since stacking is the most efficient means of storage, in terms of the Packing Factor, we will go with the exact $350 amount, which is 1400 Quarters, or ~96.46 inches, or ~8.03833 feet, tall.
Introducing the HO Scale is a little confusing, because no mention is made of which direction the conversion applies, but if we make the assumption that the Quarters are already HO scale, the stack would be ~1.1075 inches tall. Going in the other direction of scaling up, the stack would be ~8401.666 HO inches in height, or 700.1388 HO feet. Roughly 14 HO Standard Boxcars.

It's much better to use the Smoot. A stack of 1400 quarters is precisely 1.4397 Smoots. (A measurement is Smoots is always precise, if not necessarily accurate.)
I'm sure that there is an online calculator somewhere that converts from HO Standard Boxcars to Smoots, but I'll be damned if I'm going to go looking for it.

Eustace
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Re: How many quarters in a cup?
Posted by: Speedy
Date: July 22, 2014 04:56PM
One Smoot:



One Boxcar:





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