Welcome to the Coin Jar Calculator comment system.

Such a simple idea it makes me jealous to have not thought of it first!
Good work.

When I counted 6 months or so, I had $80+/-. You told me that I've gone up $20. I think that's a fair assessment. Thanks, this is fun, I think I'll grab another handful and see how much it changes

Awesome! With very little effort, I suddenly feel $588 richer.

my 30 lbs is at least $218!

I love it. but please tell that damn bird to stop taking my coins!

Cool! If I were made of money, as my kids my think I am, then I would only have about $1898 left to offer them. After that, I'm outta business.

Does this in any way attempt to correct for the weight of the container ? My coin jar is a glass one gallon jar, so even empty it weighs at least a pound.

Great job. Glad to say I know the guy who made this. James from the barber shop

It was way off. In my case I emptied the jar so nothing was left. The estimator does not take this scenario into account.
I'm not sure why (and how) it can assume from a handful how much would remain anyway.

It just estimates so relax!

Neat concept - pretty accurate in my case.
A couple of suggestions:
* The inputs should be ordered by coin popularity and size. Eg. Quarters are a lot easier to count than dimes. Once the quarters are removed from the handful the dimes are a lot easier to count.
* You should subtract the approximate weight of the jar.
* You should publish your algorithm so others might be able to improve on it!
Cheers,
-Umbrae

...handful the dimes are a lot easier to count.
* You should subtract the approximate weight of the jar.

* You should publish your algorithm so others might be able to improve on it!
Cheers,
-Umbrae

This was an interesting exercise and the estimate was within 1%. Estimate: $75.24, Actual $68.45

Estimated 11.94...Actual 14.44

;o - Totlly cool! Diff was only 'bout $1.49!!! In my favor - yous guyz was only that much short :D Impressive & Fun idea! Tanquooz

Very interesting twist for teaching kids estimation! It would be perfect if this was available in metric and in Canadian coinage... :-)

Actual: 60.00
Estimate: 61.73
Only off by 1.73!

Exact amount. Must be my hand is exactly the correct size!

:mrgreen: This calc was totally right on the money for my coin jar! WOW!!!

Very creative with sound methematical logic.

Excellent application. The estimator guessed that we had $399 worth of coins and we had $378. Glad I finally took the coins in!

I just used a small amount for a test. Actual count was 36.76......your figure was $42.23.....$5.47 too long.

:D
Well...we shall see. You predicted $210.51 on my 14.4 lbs of change. Expense account item #2, $.55 worth of gas to get me to the nearest Coinstar machine. And the final count is...
Yours Truly,
Johnny Dollar

Nope. Came in at just around $140. $70 off! Expense account item #3, $7.99, one bean and rice burrito on the way home. Remarks: This coin jar calculator is a gamble at best.
Yours Truly,
Johnny Dollar

Fun for the whole famned damily !!

Johnny...maybe the Coinstar machine is ripping you off, no?

If you're not using a postal scale or shipping scale or maybe even a food scale I don't think you can get an accurate count. It works perfect for me on non-mix coins but I use a shipping scale to weigh the coin. A half pound to a pound off which is what you could get on a normal scale makes a huge difference.

Well, estimate for my 7.08 lbs of coins was $54.77
Coinstar count was $54.26 before fees.
Less than a 1% margin of error.
:)

Too lazy to count, but sounds about right.
How does it factor in the weight of the container; e.g. my container is heavy paperboard; husband has a huge metal container.

Chris/New York, you do know you don't have to count your coin in the order shown, right?

Does anyone know how to compensate for dampness, a few foreign coins and the odd dead fish?

Estimated: $168.46
Actual: $148.16
18lb 10oz
Sample handful had 12Q, 20D, 7N, 60P
Actual coins was 1D, 296Q, 441D, 250N, 1656P
Haven't worked out the ratios yet.

your comment form was offline for ages.. is it back working now?

Coin jar weight was 21 pounds. -jar
All quarters.
15 coins.
calc said $420.
Real amount $546.

SAMPLE:
pennies - 29
nickels - 8
dimes - 9
quarters - 24
Weight: 6 Lbs even
Estimate @ CoinCalc = $76.79
Actual Qty + value @ cash in: $69.62
pennies - 322
nickels - 139
dimes - 122
quarters - 189

Great!!! estmated at 444.00 and actual was 452.00 awesome!!!!!

Hey,
I was just thinking about this feature before I felt on yours, great !
Then, I was wondering if it's really necessary to ask at least one field to be filled before computing ?
Regards,
John

CoinCalc said $585.06, had 40 lbs. for a total of 588.50!

Coin Calc estimate - $934.13 based on ~58 pounds of coin (no pennies), sample size was 44 dimes, 30 nickels, 61 quarters. Actual - $900.65. Accuracy greater than 96%!!!!

33 Pounds
coincalc estimate $394.41
Actual- $402.69
Difference- $8.28 or 97.9% accurate
Average of 3 real results from comments section- $401.61
Difference- $1.08 or 99.7% accurate
Historical analysis wins!

33 Pounds. coincalc estimate $394.41. Actual- $402.69.Difference-$8.28 or 97.9% accurate. Average of 3 real results from comments section- $401.61. Difference- $1.08 or 99.7% accurate. Historical analysis wins!

$188.38 total estimated value.
$161.14 actual.
There was an obvious lack of quarters in the bottom which accounts for the discrepancy since the sample was taken from the top. I should have thoroughly shaken the jar before sampling.

CoinCalc said $14.58. It was actually $48.12. The discrepancy is that my coin jar weighs only 3 oz. but you can't enter just a fraction of a pound. Or can you?

Coincalc estimate was $1871 and change. Actual amount was $1858 and change. (We had a large collection of only nickels, dimes and quarters.) 99.3% accuracy! Way to go,Coincalc!!

this is how much i have of change 13 something

this is how much change i have $13.66 thanks coin calculator .

:? BOB from WI,
the total weight refers to coins and jar.
you simply estimate the actual weight of the jar, and subtract that from what the total weight is.
as for the fractions, use a decimal point.
3 oz is about 1/5 of a pound or .2

way off it said i had $18 and change and i actually have $54

Drake Lodge: It still does not calculate out. Try again!

It was fairly accurate, it guess about $20 off but it was $400 worth of change so not bad in my book

The calculator said I had $787 in change after counting it I found that I had $775 in change. I don't know how much closer of an estimate you could get!

You said $670
Bank said $635
not bad!!!!! :D

Pretty good estimate I believe. A short way through the counting process at the bank, the machine error-ed. It printed a receipt of the totals at that point which amounted to $156. I knew the weight, so I entered the first receipts values for all the counted coins. The final calculation was about 24 dollars off. The total for 37.0lbs of change was $476, and this calculator totaled about $500; closer to what I thought it would be.

hi whats up

http://euro.coincalc.com/ not working... =X

Very cool 27 pounds of coins worth $311.59 and the calculator only missed by a little over $10. Impressed :mrgreen:

The calculator estimated my stash at $144, and I ended up having $156, but my scale is not real accurate. I thought it was close enough! I had no idea how much it would amount to. I love this calculator!

amazing, just amazing. put in my numbers and the calculator was off by $8.14! no more counting for me, from now on coincalc is my buddy.

This seems like a great concept, except you don't specify what size JAR you are referring to. I have a huge plastic pretzel jar, so it is going to take much more than 7 handfuls of quarters to fill it. (That is the answer I got when I calculated 12 quarters in my random handful.) So maybe you could specify what size jar you mean, such as a quart size Mason jar etc. =)

Pretty close. I had 26.88 in a metal woven container. The calculator estimated $39.27
The calculator has to factor in the weight of the "jar" and even male or female hand.

Pays to pay attention! Jar weight factor is right there at the top, defaults at 3 pounds, mine weighed in at 2 so the calculator is very close with its estimate. Size of hand may still be a factor for better accuracy! Thanks for the calculator!

Seems to work. We will see when I go to cash mine in. It said I have 859 in there we will see. And to the guy who said hand size would make a difference, it wouldnt. It knows the weight of each coin, and then calculates what the handful weighs and then calculates what the entire jug weighs based on the value and weight of your handful.

Very accurate! Calculated value of 51 pounds of coins was $1019 and the actual value was $1026! :D Thanks!

male or female and hand size do not really matter, since all a hand full of coins are is a random sample of coins in the jar. It uses the average of the coins you grabbed by it's weight, then just multiplies this by what the total weight of the jar is. they also assume the jar as nothing or close to it. I use an old 5lb pretzel jug {plastic} it has almost no weight... but can hold,for me, 3 years worth of change.

This is a really awesome little calculator. It was about 3.00 off of the actual total. Thank you very much for taking the time to put this together!

I spent the last 15 years or so dropping coins into an old glass 5-gallon water bottle. It was almost half full. I took sample handfuls and recorded my results. For anyone interested, the average value density was found to be $23.58/kg with a standard deviation of $1.87. These results are for a person that drops all coins into the jar and never takes them out(till now, of course).

Filled a5 gallon water bottle 1/3 full which weighed 58lbs. Came up with $465 and actual is over $550.

4.25lb bag of coins - Estimate was $50.78. Actual total was $50.52 (included one peter piper pizza game token...)

I too have a plastic jar that held 2 lbs of pretzels. My guess is the jar weighs less then a pound. It currently holds 99% quarters the other is 1% dollar coins and some 50 cent pieces the jar is sealed just when i thought it would be filled completely i went to weigh it, the coin line dropped 3 inches. It weighs on scale currently @ 45 lbs. I could not get the calculator to work properly.

Your web app does not work with more than 1LB of coin. With is 181 pennies.

estimate was $10.99, actual was $11.94

The estimate was $105.29. Actual count was $89.13

Prediction was $83.46. Actual count was $79.79.

I counted all the coins in a 10 oz. sample (.625 lb). The estimate was $8.14; the actual amount was $8.06.

Actual was $87.50 and Estimate was $88.25 so it was very close

Estimated 20.62 and there was 18.00 exactly not all that accurate

Estimated was $207.48, actual amount was $208.96. $1.48 difference is pretty darn accurate

We saved for a long time to end up with this much money in coins. After I got the results from your coin jar calculator ($207.65)I took all my coins to a supermarket that has a self-service coin counting machine. The accurate total of my money was $211.08 (off only $3.43 which I think is extremely close!) Of course the supermarket kept $20.69 of it for their fee, but that's okay because I would not sit and count & wrap it for $20.69!

I know there has not been a heavy coin bank count so here it is. Weight was 124lbs , estimate was $1,842 and actual was $1,575. I know it's off but it's still a good estimate.

The coin estimate was $291.62 and the actual total was $303.03. My change weighed 19 pounds. I thought this was pretty accurate. I was only using the site for a good estimate, I wasn't looking for an exact amount. Very satisfied.

26.5 pounds of coins was calculated to be $432.67. Actual amount was 308.92 - 71.4% of the predicted amount.
The difference is that I stored my coins separately before combining in a bag. The last jar in had only quarters so the handful was biased towards quarters which probably contributed to the high predicted value.

I had a military ammo can filled with coins, weighing 53 pounds. I guessed the net weight at 50 pounds and your estimate was $591.75. The bank just reported the official count as $660.08 (plus 3 Canadian quarters) I'd say you did very well..My estimate of the canister weight might have been off some and contributed to the slight under-estimate.

The calculator estimated $207.18 and the actual amount was $225.14, so it was off by about 8.5%. I was using a bathroom scale (not very accurate) and may have over-estimated the weight of the container, but for my purposes, this was certainly close enough. Just wanted to make sure that when I brought my coins to the bank, their total was in the ballpark of the estimate. Well done!

CoinCalc estimated my large coin jar at $161.53. I brought to a CoinStar machine and the actual value was $161.43.
That was ridiculously accurate, wow!
My brother has similar results and was equally amazed. Thanks!

After 4 years of tossing my change daily into my coin jar, I ended up with about 101 pounds! Try lugging THAT to the bank ;)
Coin Jar Calculator estimated my haul at $1381.89
Actual grand total: $1430.19
It is pretty hard to get an accurate weight on that much coin with a bathroom scale so I would say your calculator was pretty accurate! Thanks.

I suggest that you get the weight as close as possible and then grab four handfuls, one at a time. Get the average and tell the banker before he/she dumps the coins in the hopper. I told her I'm guessing $137, the actual amount was $136.98 (and one Canadian quarter).

No! I need one that does AUD!
My 4.8 pound piggybank is full of 5c, 10c and 20c pieces. Money weight is different, but I used the Nickles, Dimes, and Quarters (though I entered a bit less than I actually had in my handful)
So I ended up with roughly $85 AUD. Cool! I in no way think this is accurate, but it's all for fun.

Pretty amazing tool. How true it is I don't know because I haven't cashed them in yet but I took two handfuls once a small one and got 187.9 and then took a large handful after shaking the whole thing and got 187! Pretty amazing.

Pretty darn accurate. The site said 63.91, I just got back from the bank and it was 62.31. So I will use this site again.

Not even close. I had approximately 53 pounds of mixed coins. I grabbed a huge handful (two handfuls, actually - thinking, bigger sample would be more accurate) and based on that sample, 53 pounds calculated out to $931.xx - just returned from TD bank and their machine counted $646.xx

This app is neat but was off it told me 117$ and I got back 83$ but was still neat to guestimate based on handful.

Well I'm impressed. Had a 10 pound bag of change followed the instructions and counted up a handful. It spit out an estimate of $107.15. Headed for the bank $93 exactly, I'd say that's pretty darn close for it being what amounts to an educated guess.. I'll certainly use it again!

The prediction was $246.66. The tellers invariably ask how much I think is in there and are amused by the precise number. She came back and said I must have cheated. The actual total was $240.39.

Having now read some other comments I'm adding to my previous comment. I used a very accurate table top scale and subtracted the container weight. I've done this before with similar results. If the prediction is wildly off you're probably not doing it right.

:D It guessed 209.xx and my total at the bank was 208.xx. I got an accurate weight by using a scale and took a handful of coins and was less than a dollar off.

I was doing this for fun! I have a coin counter jar that is currently at 111.48 and this online estimator got crazy close at 111.68! I am pretty impressed.

I had 56 lbs of coins, mostly silver, very few pennies (that were mistakenly included). Estimate was $944, actual amount was $949. I'd say that's pretty darn close.

Coincalc estimated 187.72 for my 15lb of coins. When I cashed at the bank came out to 187.84... Really accurate. :)

Incredibly close! My coins add up to $436.62

It predicted 202$ and I had 150$. It was fun though.

Predicted $423.75, actual was $200.99--big disappointment after years of anticipation in accumulation stage! This can only be explained by a non-representative sample, I guess, but it really looked representative so I don't get it. Probably a good idea to use both hands to mix everything up really well before you take your hand full of coins. :oops:

I got $83.00 and i didn't know :shock:

I thought I had about $100 in my current job and I was actually pretty close $99.91. Saving up for summer vacation.

For me, it worked exactly because all of the coins in my jar are quarters. Therefore, I just entered a small number of quarters so the calculations worked out to the right number. Clearly, if all of the coins are the same, you will get a more accurate result. The representative sample is a true reflection of the contents of the jar.

This was quite close! It estimated $29.40 and I was just barely over $28.00 dollars. Just try your best to make sure your handful is a good representation of the rest of your jar. Thanks for the fun.

One jar, all silver. The calc said 782.45 at 47 lbs 779.90 at the bank. Well done!

:o) Great job! Estimated value was 266.32 actual value was 321.83. Must have had some quarters hiding in the bottom of the jar.
Thanks for the fun!

Predicted: $139.94
Actual: $125.97
satisfactory for my purposes
I thought I'd never fill that coin eater dino!

Terrible. Just terrible. It estimated 34.32 and it was really 62.54. Not happy nor satisfied. Not fun!

It said it would be $288 and the final count was $279 - amazing!

thanks for your estimate. I bought coins off another and needed an approximate amount to pay them. Never cashed in so not sure how close your app was.
but I am glad to have found your website it made it a lot easier. than counting and rolling :D

Estimated 308
Actual 295
And I forgot to take out the weight of the container, so probably exact

I am a huge fan of coin jar calcuator. Love the new website look!

Do you enter weight of coins or amount of coins? Seems faster to count if it's amount

38.5 lbs. calculator says...$544.16 Bank says $515.76 off by 5.2%

$13.39 per pound

Not sure of the weight, just a "guesstimation." But, about 45 lbs of coins. Calculated $350 actual was a little over $400. Close enough!

Quarters and dimes equal out the same, dollar for dollar. By weight, $5 worth of dimes is the same weight as $5 worth of quarters, so it's the nickels that throw any calculations off a bit, and pennies if you are counting pennies also.

Calculator predicted $396.47. Actual: 414.56. Pretty close!

I got 283 dollars in change...can't wait to find out if it's correct or not.

I never thought about it 💡 but I'm going to start leaving my silver coin jar (no pennies) on a scale for security so if the kids hands get sticky they have to even it out some how a few nickels for a quarter 🤣 at least I wont lose it all

Coin calc estimated about $210 and my coins were just over $161. It was fun to see if it worked.

Estimate: 30.67
Actual: 29.96

This was a small portion of the total coins as my scale couldn't handle all of the weight.

I imagine some of the big discrepancies are due to people including the weight of the container with their coins.

I can't take this seriously. Who came from the random website generator ^_^

If you all want to maximize the dollar amount of a jar only save quarters and dimes. They are worth more per volume than nickels and pennies. Quarters and dimes are worth like 2.5 cents per squared centimeter. Pennies and nickels are worth diddly squat. So use those to get back mostly quarters and dimes and stash those away.

yes. very accurate

I don't understand your site. I have 21.8 lbs of dimes. If I knew how many dimes are in my container, I could just multiple that number times .10.

I just cashed in a 5 gallon water jug full of quarters, nickel and dimes. I was not able to weigh it, but divided it up into 5 pillowcases that I estimated weighed around 30 lbs each. Then based on my estimation, I figured the majority of my coins were quarters (100 lbs), dimes probably made up 25 lbs and nickels 25 lbs. The coin jar estimator said $2612. Took it to the bank...$2865. I thought that was a pretty good estimate, given that I really just guessed at the amount of the different coins.

34.2# bag of coins. The tool estimated $448.28. Actual was $475.69. Off by just under 6%. It did just what I wanted it to do.

Estimated $71.29, got $67.89

Estimated: 32.98
Actual: 33.66

Very nice

Estimated $118, actual $130. My sample handful was off on its quarters-pennies ratio.

If I only grabbed nickels and i know there are no pennies, why would my 4 lb jar calculate to be $18.14? I grabbed no pennies?

The things you do when you have insomnia....
Estimated: $108.20
Actual $110.40
Pretty darn good, though I took a large handful sample of 57 coins (about 8% of the total population) and already separate pennies from the rest of the coins, so I was expecting an accurate result going in. At least now they're separated so I can start to roll them.
Interesting calculator.

$92.77 was the estimate and $92.55 was the actual amount. Too cool 👍

Soooo, about six months and 10 lbs ago, it said I had over $500. I did it a couple times. Now, six months later, and 10 lb more, it's telling me I have $25 less then six months ago?

I have a full 12 oz coffee can full of nickels and dimes which weighs approx 9.8 lbs. Total amount estimated at 132.39. The last time I used this and had the can almost full, like a couple inches from the top the estimate was 108.00 and change. I cashed out at 111.00 and change! Amazing how close this is. Oh, I can still put a couple layers of nickels and dimes in the can. Saving quarters and have 42.50! Pennies about a 1/3 full in a 12 oz can weighs 4.4 lbs for a total of 7.98. Grand total $182.87. I don't need the money right now, so I may get a bigger can for the nickels and dimes. Couldn't do this when my son was growing up, he always took my change. Hmm, I did that to my Dad too, big difference, most of the coins back then still had silver in them.

66lbs estimate 668.99 actual 666.07

So it was pretty close, about $12 off, It said $226.85
Actual amount $214.95
I really thought I had way more money but I'm still saving :)

Estimate 416.80, actual amount 431.60. Pretty accurate I’d say

$3,338,537,412,682,976,487,894,725,104,622,110,543,199,006,792,356,600,131,912,106,103,138,977,105,065,052,737,582,899,171,700,010,524,492,289,694,261,377,222,636,206,030,848.00 is how much my jar is worth

Used a Coin Star machine that ended up jamming. The attendant pulled coin from various areas inside the machine, so I think there was some double counting going on. Estimate was $138.37 for 11#. Coin Star paid me $169.00. Like I said, I think the inaccuracy come from the machine! Thank you!

If you want a more accurate estimate, take more than one handful and average the calculations.

Anyways, it's an ESTIMATE.

USD $138,000,126,888,443,372,151,582,410,706,321,918,091,004,270,485,858,380,939,264.00
Im RICH

The calculator's estimate was $299.34 actual was $270.10.

Had $322.25 worth of quarters, the calculator estimate was $321.60.

Just be aware that its pennies and nickels that affect the calculations. Pre 1965 all Dimes, Quarter, Half Dollars were made of silver and that is why they are the sizes and weights that they are. Even though they are not made of silver today their weights remain the same. if you took five dimes and compared the weight to two quarters or one half dollar they would all weigh the same. Pennies were copper and nickel were steel. So its best to make sure you do multiple handfuls to get the best average of coin distribution per handful. Simple put, if you had ZERO pennies and nickels the calculation of coin jar will be 99.9% accurate.

16.4 lbs mixed change. 12.15 face value of handful...226 estimate...actual 226.01...Pfft, not bad but...As a millennial sjw alexa using mask wearer, It should have been more accurate!...I will NEVER USE THIS SERVICE AGAIN!..I WANT YOUR MANAGERS NAME...Sincerely Karen Karenson

I have 91.6 pounds of change. This was 17 years of me throwing my change in a water jug. It estimated $815.29. Once I figure out how to transport this money to a place to cash it, I'll let you know the exact amount. I think it's going to be my local Indian casino. If I go through my bank, I have to roll it. If I use one of those Cash Star machines, I lose a percentage on the dollar. If I go to the Casino's cashier? They have an industrial machine and it costs me nothing.

I can't help but imagine what I would have saved during times where they didn't use Bank cards everywhere. We don't really live in a "cash" society anymore. I'm shocked I had as much coin as I did. Lol.

noice

Nice site and calculator! Thank you for your help. Not ready to count it but will do a couple more handfuls to get an average.

Nice site and calculator, Thank you! Not ready to count it all but will do a couple more handfuls to get and average.