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Old 09-14-2018, 12:06 PM   #1
tucanroman
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Calculate ROI manualy

Hello 2+2, little question. I am needing to calculate my ROI by myself because I need to do it from 2 different bankrolls.

I tried this: https://www.calkoo.com/es/retorno-de-la-inversion-roi

But it doesn't seem to work. I played 111 3,5 STTs at PS with -20% ROI. I played 2 $3 STTs at 888 with 500% ROI

When I add investment of 111x3,5(PS) + 6(888). And put my profits of -67.xx it gives me -135. ROI. But PS itself is -20% ROI on HM2. and 888 has positive profits

How do I calculate it properly?? thanks a lot
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Old 09-14-2018, 01:27 PM   #2
sixfour
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Re: Calculate ROI manualy

So you lost 70 cents 111 times and won $15 twice for a - $47.70 return. Your investment was $3.50 111 times and $3 twice, which is an $394.50 investment, so as I've run out of room in the back of the *** packet is about -12%
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Old 09-14-2018, 01:28 PM   #3
Kurn, son of Mogh
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Re: Calculate ROI manualy

Are you forgetting to add the rake to your investment?

In other words, are the PS 3.5 STTs, 3.25 + 0.25 or are they something like 3.5 + 0.35?
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Old 09-14-2018, 01:28 PM   #4
ArtyMcFly
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Re: Calculate ROI manualy

ROI% = (Total cashes minus total buyins)/total buyins, or net profit (or loss) divided by total buyins.

So (for example) if you paid $400 in buyins, and cashed for $333, your ROI would be (333-400)/400 = minus 16.75%

The big ROI on 888 is barely gonna dent your overall number, because you apparently only played 2 games on that site and they were at a slightly lower buy-in anyway.
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Old 09-14-2018, 01:43 PM   #5
statmanhal
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Re: Calculate ROI manualy

You invested 388.5 at PS with an ROI of -20% so your profit was -77.7. You made a 30 profit at 888 with a 6 investment. So your total profit is -47.7 with a total investment of 394.5.

ROI =- 47.7/394. 5=-12.1%

What sixfour said doing it another way
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Old 09-14-2018, 01:49 PM   #6
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Re: Calculate ROI manualy

Quote:
Originally Posted by ArtyMcFly View Post
The big ROI on 888 is barely gonna dent your overall number, because you apparently only played 2 games on that site and they were at a slightly lower buy-in anyway.
Yeah, but the profit was huge (relatively), so it can makes a big difference depending on how youi calculate . It's a question of averaging profit vs averaging ROI.
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Old 09-14-2018, 01:55 PM   #7
tucanroman
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Re: Calculate ROI manualy

Yes lol, I just played 2 stts on 888 because of the ddos attack. I was playing only 888 and started on PS just because of that problem that was there for like 8 days. I don't trust 888 until they fix it 100%

Thanks guys I will use this tonight after session to calculate it in my "eat meat again" challenge. Yesterdays I was so mentaly roast after a big session that I just couldn't figure out how to get the number.

Why does the web page does it wrong? I put the 39x.xx investemnt and the -67.xx profits and it shows -135.xx ROI

888 profits are around 20 not 30
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Old 09-14-2018, 03:22 PM   #8
sixfour
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Re: Calculate ROI manualy

A 500% ROI on a $3 donkament is $15. If you have played two at that rate, you have made $30. We can't say why whatever tool you are using is correct or wrong if you don't know yourself, we're assuming you're calculating the individual sites right
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Old 09-14-2018, 06:37 PM   #9
statmanhal
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Re: Calculate ROI manualy

One aspect not yet mentioned is sample size.

To be 90% confident you are a winning player, 100 or so tournaments is adequate if your limited sample ROI is 20% or better; but for a lower initial ROI, say 10%, a sample size of 300 or more is required. If your initial ROI is negative, first get it turned around before worrying about sample size.
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Old 09-14-2018, 08:51 PM   #10
tucanroman
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Re: Calculate ROI manualy

500 wasn't the actual number, but something like that, I think profits there were 24.xx

statmanhal: I tryed this as a way of having some little montly money but I think it did not worked out. I will do it anyway but in the 180's where my ROI is 22% in almost 2k sample
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Old 09-14-2018, 10:41 PM   #11
statmanhal
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Re: Calculate ROI manualy

I should have noted that the sample sizes I posted were for a STT, which the OP referred to. Since the variance is much greater for MTTs, a much larger sample size will be required.
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Old 09-15-2018, 04:59 PM   #12
tucanroman
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Re: Calculate ROI manualy

2k sample size for 180's is enough? I think I read here it was 1k. I lost my last years data when my HDD died in march, I use this almost 2k sample from poker pro labs. I can't find the way to see the complete sample from where I started the $1's 180's by october 2017
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Old 09-17-2018, 09:07 PM   #13
tucanroman
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Re: Calculate ROI manualy

Guys I don't understand this

I will put the exact numbers. Since I started the challenge I played:

- 15 SNG $4.50. I spend on this $67.5, and winnings are 158.08 (net winnings 90.58)
- 52 SNG $1. I spend on this $52, and winnings are 39.82 (net winnings -12.18)

So winnings: 158.08 + 39.82 = 197.9
So cost: 67.5 + 52 = 119.50

So, winnings divided cost: 119.50 / 197.9 = 1.656
So, my ROI is 165.6 % as it make no "math sense" it probably is 65.6%

Aproved??
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Old 09-17-2018, 09:18 PM   #14
tucanroman
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Re: Calculate ROI manualy

Well.. big problem now :P

I did todays numbers and ROI is 5.794

It would be 479.4% ??
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Old 09-17-2018, 10:30 PM   #15
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Re: Calculate ROI manualy

Look at Arty's equation:

Quote:
Originally Posted by ArtyMcFly View Post
ROI% = (Total cashes minus total buyins)/total buyins, or net profit (or loss) divided by total buyins.
Quote:
Originally Posted by tucanroman View Post
- 15 SNG $4.50. I spend on this $67.5, and winnings are 158.08 (net winnings 90.58)
- 52 SNG $1. I spend on this $52, and winnings are 39.82 (net winnings -12.18)

(197.9-119.5) / 119.5
78.4 / 119.5
65.6%
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Old 09-17-2018, 10:54 PM   #16
tucanroman
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Re: Calculate ROI manualy

Thanks! I didn't understand how to convert the 1,xx to % now I do!
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Old 09-18-2018, 08:12 AM   #17
ArtyMcFly
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Re: Calculate ROI manualy

It's pretty intuitive really. ROI means Return on Investment.
Your return is your net profit (or loss), and your investment was your buy-ins. Just divide R by I to find out the percentage.
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