These on-line calculators
were originally put together for my own use whilst betting and laying
horse and football markets.
Some of them convert odds or other information into something a little
more useful, whilst others were designed for a specific strategy.

I hope you find these free
calculators interesting, and hopefully, a refreshing change from the usual free
on-line calculators that show the staking for trading bookies free bets, or the
returns from winning bets on multiples.

Calculators are positioned to the left of your screen so that you can
minimise your screen and place them alongside your Betfair market.

Please bear in mind that all betting
and laying just within an exchange carries risk.
The only way to trade risk free is to use a bookie for the bet end of a trade.
I expect that you will probably be well aware of that by now.
In the write-up for each calculator, I try to highlight
in red
the risks / problems that I have had when using that particular calculator.
You may of course have other unforeseen problems.

Warning :-
The owner of this web site cannot be held responsible for any losses incurred
whilst using any calculator or spreadsheet associated with this web site.

Exact Goals odds . . . . .
A guide to . . . . . How
many goals do the markets expect will be scored ?
We all look at Match Odds to see which team is most likely to win, but where do
we go from there ?
If there was one, I have no doubt at all that an Exact Goals market in Betfair
would be the 2nd thing to look at, but there is no such market.
The best we can do at present is look at Under / Over Goals, Correct Score, BTTS,
etc..
To help us to trade a game, Betfair put several markets on the same screen, but how do you
weigh things up across those markets ?.

Betfair doesn't have a market for the Exact Number of goals to be scored.
We can use Correct Score to work out Exact Goal odds, but the normal
Correct Score market bunches odds together for scores with 4 goals or
more, with scores shown for such as 4-0, 0-4, 5-0, 0-5, 1-4, 4-1, 2-3,
3-2, etc. in 2 separate Correct Score markets, one for Home scores and
another for Away scores.

The result of that is that
we can work out accurate Exact Goals odds for 0, 1, 2, or 3 goals if we
use only the normal Correct Score market, but for bigger scores, things
get more complicated.
To look at Exact Goal odds for 4, 5, 6, or more goals we would need to
look at 2 more Correct Score markets as well.
Also, in games with poor liquidity, there can be big gaps between bet and lay
odds in Correct Score markets, or even no odds at all.

To get around those problems, we can use the Under / Over
goals markets which usually have smaller gaps between bet and
lay odds.
For example :-
If you bet Under 1.5 goals and bet Over 2.5 goals, and you have
bet everything except 2 goals.
Using those 2 bits of information, we can work out the odds for
2 goals.
We can of course do the same for other exact numbers of goals.

In the calculator below,
input bet or lay odds to see both bet and lay odds for Exact Goals. The column on the right shows the odds used to work out the Exact
Number of Goals odds, but to understand how the odds have been worked
out, a bit of reverse logic is required.
For example :- If we BET EVERYTHING EXCEPT the scores containing ONE
goal, that is the same as LAYING one goal.
LAY EVERYTHING EXCEPT the scores containing ONE goal, and that is the
same as BETTING one goal.

To see only Bet odds, input only the LAY odds from your Under / Over
Goals markets, + both bet and lay odds for 0-0.
To see only Lay odds, input only the BET odds from your Under / Over
Goals markets, + both bet and lay odds for 0-0.

Note that we do not need Over 0.5 odds. Also, we don't need
Under 8.5 odds (for odds for 9 goals).
0-0 odds from Correct Score can be used instead of Under 0.5 Goals
odds.

A quick way to see what
score will have the Favourite odds is to look in Betfair and compare the
Over goal odds of one market with the Under goal odds of the market
above.
For example compare Over 1.5 with Under 2.5.
If the odds of both are less than 2.0, the goals in between will be the
favourite in your Exact Goals market.
In that example, if Over 1.5 and Under 2.5.odds were both less than 2.0,
then 2 goals would be the favourite odds. . . .
in red
in the calculator.
If it is odds-on that there will be more than 1.5 goals and odds-on that
there will be less than 2.5 goals, the indications are that there will
be 2 goals.

You do not need inputs in all the cells, . . . . .
. just enough for you to see the shape of your market.
The
favourite odds
will be in red.
Compare the 2nd and 3rd fav odds.
2nd fav odds smaller than 3rd fav odds may indicate that the markets
expect "Favourite or less" goals in your game.
3rd fav odds smaller than 2nd fav odds may indicate that the markets
expect "Favourite or more" goals, a higher scoring game.

Note that to bet or lay Exact Goals using the Under / Over Goals
markets
will be costly in commission as your 2 stakes will be split across 2
separate markets.
To bet or lay Exact Goals, it costs less in commission to Dutch the scores that add
up to your number of goals in the normal Correct Score market .. . .
BUT the normal Correct Score market only covers up to 3 goals of course
. . . . with 4, 5, 6, etc. goals being split across 3 Correct Score
markets.
The Exact Goals odds produced by this calculator are only approximate
odds, based on a 100% book percentage.

The Exact Goals video below demonstrates the
calculator.
The result of the game in the video was Bristol City 4 - 1 Crystal
Palace, . . . 5 goals.
For a bigger view, click on the small 4 cornered icon, bottom right of
the YouTube screen.

Combined or "Coupled" odds.
Use this calculator to show the Combined Odds of up to 10 runners.
You may be using a staking plan spreadsheet, betting or laying
one runner at a time, but decide you need to bet or lay more than one runner in
your race or game.
Dutch your bets or lays and you can use the Combined Odds of your runners for just one row of input in your
spreadsheet for all your runners.
Any kind of Dutching - - - - Dutching with a set stakes limit, Dutching to a
profit target, etc., will work ok with Combined Odds.
Input the odds of your Dutched runners into this calculator and then use the
Combined Odds for a single odds entry in your staking plan.
Follow this link for a selection of Dutching spreadsheets

The balanced staking of Dutching returns the same profit or loss if you hit a
winner or a loser.
If you are not Dutching your stakes, Combined Odds
isn't going to work for you, as your profit or loss for each runner will
not be equal.

Expected Losing Sequence . . . .
E.L.S.
Use this calculator to work out (estimate)
how many consecutive losers you can expect to hit in your trades.
From your records of past results, or your estimate of the number of
winners you expect to hit, input your number of bets and winners.
The calculator shows the E.L.S. based on the those figures.
Note that for the same strike rate, a big sample will show a bigger
E.L.S. than a small sample.

I came across the
calculation for "Expected losing sequence" whilst browsing the Internet
quite some time ago, so put a small spreadsheet together.
I added a Profit & Loss calculation so that potential P & L can be
worked out for bets at different odds.
Input your commission rate and Average Odds for your bets.
The P & L part of the calculator has zero influence on the E.L.S. part,
so if you change your odds, the E.L.S will be unaffected..

To arrive at the net profit
on the right in the green highlighted cell, each bet has been treated
as an individual bet.
Commission has been taken off everything in the "Win" cell, and then the
losses deducted from those winnings.
For example, if we were to place one bet per day for 100 days, 100 bets,
and hit 60 individual winners and 40 losers :-
We would pay commission on each of those 60 bets, and then deduct the 40
losing stakes.
That is how the P & L has been worked out.

Bet
an exchange accumulator.
Use this calculator to bet an accumulator at Exchange Odds.
To use this calculator, you will need time between each of your races or games
so that you know the result of one before you bet the next.
Input odds and a starting stake.
After each event finishes, input the result as a One for hitting a winner, or
Zero, or leave it blank for hitting a loser, and the calculator shows the next
stake.
To see the potential total payout if you were to hit all winners, enter all odds
and with all results as winners.
Commission is built into this calculator.
To see what bookie odds pay, enter your bookie odds and set commission to zero.

Need to bet
more than one runner in your race ?
Put any old odds into the calculator for your race to show the Next Stake for your next runner.
Dutch your runners to a Set Stakes Limit of that amount and then
overtype in the
calculator with Combined Odds for a single line of input in this
calculator.

Betfair Queue
. . . . plus, "Where is the money going ?"
Use this calculator to see what is, or is not being bet, and what is or is not
being layed, . . . . . before or after you place a bet or lay.
Use this calculator to see where you are in the Betfair queue.
. . . . How close you are to getting your stakes matched.

The graph that Betfair provide
for each runner shows where the odds have already
been. . . . That's history.
This calculator was designed as an indicator for where the odds could be most
likely to go next using the same information, but presented in a different
way.

Betfair queue
position :-
Name your team, horse etc..
From the Betfair graph, input the amount waiting, the "To Bet", or "To Lay" into
the calculator from the blue or pink columns in the Betfair's graph info.
Also input the "Traded" amount. . . Enter that number in the "Original Traded"
cell in the
calculator.
Then, refresh the Betfair graph by clicking on another runner and then clicking
your runner again.
Input the "Traded" amount but this time in the "Current Traded" cell in the calculator.
Keep refreshing your runner and updating the "Current Traded" cell in the calculator.

The
calculator will show how much is still left to match, and how much has
been matched since you started updating the calculator.
I am unable to show negative numbers in red text, so if the word "Negative"
pops up, your Current Traded amount has exceeded the "Target Traded" amount.
When you see a negative in the "Still left to match" column, your bet or
lay should be matched, or a bit earlier if other traders have cancelled
their trade.

Where might the odds go
next ?
Set your own percentage limit and
this calculator indicates whether the odds may be about to move up or down based
on your inputs.
Update the "Traded" amount in the Current
Traded grey cells as described above.

If the % Ratio column hits
your Trigger %, an indication will appear with a suggestion as to which
way the odds may be about to move.
That is only an indication that one side has been traded more than the
other and has hit your % Trigger.
No-one can predict the future - - - - - what the odds will do next.
If the odds change
whilst you are doing that, you need to overtype your new odds, plus the
Original Waiting & Original Traded amounts in the calculator..
Then carry on updating the "Traded" amount in the Current
Traded grey cells as before.

To cut down on typing by
50% or so, input your odds and only the Originally Traded amount. .
. . . and ignore the Original To Bet, To Lay amounts.
Leave those blank..
Then just update the "Current Traded" amount in the grey cell.
You will get less information, but speed things up with less effort.

Horses.
Look for a race with 3 horses with odds in single figures, and all the
others at big odds. - - The betting suggests that it is a 3 horse
race.
If one or more of the first 3 in the betting shorten, the odds of the
other one or 2 must lengthen to maintain Betfair's near 100% book
percentage.
If one or more of those 3 odds get bigger, the other one or 2 must get
shorter.
The only thing that will prevent that is the odds of the outsiders
moving instead of the 3 shorter priced runners.

Football Match Odds.
Use this calculator with a Match Odds football market to monitor all 3
outcomes.

To keep pace with a market, it may be best to use this calculator well before
Race Time, or Kick-Off, when the odds are not moving quickly.
I have had problems in very big markets . . . . One
selection that may appear to be very quiet, can suddenly make a move, having
been hit by a very big bet or lay.
I found that smaller markets that I expected might be more volatile,
proved a little more reliable.
Use this method as an odds movement indicator, and you will still have your ups and downs. . . . . . Does
anyone really know where the odds will move next ?

The video below describes a
spreadsheet version of this calculator.
How to use it as an indicator of potential odds movements is described
in the 2nd half of the video, and especially towards the end.
For a bigger view, click on the small 4 cornered icon, bottom right of
the YouTube screen.

Insurance Bet or Lay stake to include
commission. If you need to place an insurance bet in a separate market from your
main trade, there will be commission to pay if you hit a winner with
your Insurance Bet or Lay.
If you are insuring for a large amount, you could lose quite a bit due
to commission deductions in that separate market.
The calculator below shows the stake required to win your chosen amount,
including commission deductions.

Input bet or lay odds and
the Target £ amount you need to win with a winning bet or a successful
lay.

Dutch 3 Lays and L.T.D. (Lay The Draw) Exit strategy.
Place one or more Lays in a Match Odds football market and use this
calculator to show the Lay stakes required to equalize the whole trade
for an equal profit or loss whatever the result.
This is the equivalent of a "Green Up" button that you may have seen in
trading software, but this is a Dutching method, not a bet and lay Hedge
green-up.

You may find other uses for
this Dutching calculator.
Below, (later this week) will be a Lay The Draw exit strategy which can be used if the odds of
the Draw don't lengthen after the first goal.
Note that this strategy is aimed at damage limitation rather than an
exit to profit, and it is also high risk, if the score gets to 1 - 1 at the "Wrong" time. Instructions.
The calculator has 3 sections at the bottom, one for each of the 2 teams
and the Draw.
Name your teams and draw half way down the calculator.
Input odds and stakes of your lays in the 3 bottom sections.
The current position of your trade for each of the 3 outcomes is shown
at the top in the middle.

To see the Dutching stakes
required to equalize your trade, enter the current odds in the yellow
cells.
A range of odds and stakes are shown.
Top left in yellow
shows the the profit or loss if you place the stakes shown on the yellow
row next to your odds inputs.
The "If Layed" columns in the middle part of the calculator show profit
or loss if you lay amounts shown at those odds.
Lay the odds and stakes shown on the yellow row, and your profit or loss
should be that shown top left of the calculator.
Lay the odds and stakes in the pink cells, and P & L will be slightly
different from the top left yellow cells.

Insurance
Bet.
The Insurance Bet odds & stake facility is provided for use with Lay The Draw
trades if you place an insurance bet on 0-0, or something else.
Input odds and stake, and bet profit will be added to the P & L of the
left - most section of the calculator, but taken off P & L for the
middle & right sections.
That allows the calculator to show 0 - 0 bet profit in Correct Score combined
with lay liabilities in Match Odds.
If a goal goes in and your 0 - 0 insurance bet becomes a loser, delete
only the bet odds and the calculator will then see the 0 - 0 bet stake as a losing bet
stake.
The bet stake will now be deducted from all 3 sections of the
calculator, not just middle & right hand sections.
If you are not using an insurance bet, or not even doing an L.T.D.
trade, leave the bet odds & stake blank.

L.T.D
Exit strategies.
This is nothing new. I read about this method years ago in a forum
somewhere and put a spreadsheet together for my own use to show the
staking.
We have layed the Draw and the outsider of the 2 teams scores the first
goal.
The odds of the Draw go down instead of up, so we cannot bet the Draw to
exit to profit.
We have several options, . . . do nothing and hope for more goals, bet
to exit our trade and take the hit of a losing trade, or start to Dutch
the 2 teams in Match Odds, hoping for an early equalizing goal that gets
the score to 1-1 so that we can make a clean exit with little or no
financial damage. 1.
Dutch Match Odds exit strategy if we are expecting
an equalizing goal from the
favourite team :-

With the score at
1-0 or 0-1, Lay the winning team for a chunk of what would be an
equalizing lay at the current odds.
Look for to break even if that team wins, or perhaps an
acceptable loss.

At a score of 1-1,
lay both teams at the current odds to Dutch all 3 outcomes to
equalize the whole trade.

Problems can occur if we have layed the winning team, but the
score remains 1-0 or 0-1 well into the 2nd half of the game.
After about 65 minutes or so, if a goal goes in to get the score to 1-1,
the odds of the 2 teams may not be small enough for a good exit without
too much damage.
Also, a goal very late in the game that gets the score to 1-1 may not
leave enough time for the Match Odds market to reform before the final
whistle.
If that happens, there will not be time to trade out.
Perhaps a speculative lay of the current score, 1-0 or 0-1 at very short
odds may help as that could be done very cheaply at very short odds.
A very late goal would see profit from that lay, but if no later goal is
scored, the payout on 1-0 or 0-1 can be quite small.

2.
Try this
- - -
Dutch Match Odds
exit strategy with insurance :-
If we lay a little less on the Winning team, we can place a lay towards
the end of the game when the lay odds are very small.
That will cover a very late goal from the Favourite Team :-

If we anticipate that there may NOT be
an equalizing goal from the
Favourite Team (Liverpool in the 2nd video below) :-

With the score at
1-0 or 0-1, Lay the winning team for slightly less than an
equalizing amount at the current odds.
In video 2 below, lay Watford for £10 instead of £11.63.

If the score remains
1-0, we could lay Watford again very late in the game at odds of
1.05 for £60 at odds of 1.05 for zero loss against the Draw, and
a
loss of only -£0.20 against a win for Watford.

If
we lay very late in the game, there would be no need to lay
Liverpool at all as there would be a very big profit from our
successful lays of the Draw and Watford against a very late
Liverpool win.

In the video, Liverpool scored an
equalizer soon after the first Watford goal to get the score to 1-1.

At that
point, with the score at 1-1 & after laying Watford for £10 instead of £11.63,
lay the 2 teams at the odds shown in the video.
Lay Watford £8.49 at odds of 7.40 & Liverpool £51.14 at odds 1.76 - - - - for a
loss against all 3 outcomes of close to
-£0.38.whatever the result.

Video 1. This old video describes a spreadsheet version of this
Dutch 3 Lays calculator.
Apologies for the poor sound quality.
Please turn up your volume.
Video 2 describes an L.T.D Dutching exit strategy that can be used with
this calculator.
To demonstrate the
exit strategy, odds are used from a
game that was already in progress, so no lays were actually placed.
Odds in the video are :- The Draw pre kick-off Lay 4.5. After one
goal, Watford Lay 2.72, Liverpool Lay 3.05, and at a score of 1-1,
Watford Lay 7.4, Liverpool Lay 1.76.
For a bigger view, click on the small 4 cornered icon, bottom right of
the YouTube screen.

A
graph showing the number of Ticks
moved.
I put this together in an attempt to see more clearly how odds interact.
Follow this link - - Opens in another window.
If something goes up, something else must come down to maintain the near
100% book percentage of Betfair markets.
This method of displaying Tick movements makes it easier to see how one set of odds
are moving in relation to others.

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