Games and odds · free tool

Lottery formula calculator: what the maths says

Lottery formulas work on past draws: add the digits, find the gaps, count the numbers that have not appeared. A past draw does not change the next one, so every formula ends by choosing a set like any other. The arithmetic is on the page: a full match is 1 in 1,39,83,816, and it takes 96,92,843 tries before a win is likelier than not.

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Prizes your lottery pays, in ₹ (leave 0 where there is no prize)

The example prizes are built so that a ticket returns about half its price on average: the jackpot adds 25% of the price, the next three prizes 10%, 10% and 5%. It is an illustration, not any lottery’s table. Type the prizes your own lottery states, and note that a shared jackpot pays less than its headline figure.

1 in 1,39,83,816chance of the jackpot with one ticket (all 6 of 49 numbers)
1 in 54chance of winning any prize with one ticket
49.6%of the ticket price comes back on average
₹50average loss on one ticket
₹5,038expected loss over 100 tickets at ₹100
1 in 1,39,839chance of at least one jackpot in 100 tickets
96,92,843tickets before a jackpot is more likely than not

A ticket of 6 numbers from 49 faces 1,39,83,816 equally likely draws, so the jackpot is 1 in 1,39,83,816. At ₹100 a ticket and the prizes shown, about 49.6% of the price comes back on average: ₹50 lost per ticket, or ₹5,038 lost over 100 tickets. Every set of 6 numbers, 1, 2, 3, 4, 5, 6 included, has exactly the same chance.

Every result for a ticket of 6 numbers from 49
Numbers matchedWaysChanceOne inExample prizeAdds to the average return
610.0000072%1,39,83,816₹35,00,00,000₹25
52580.0018%54,201₹5,40,000₹10
413,5450.097%1,032₹10,000₹10
32,46,8201.77%57₹280₹5
218,51,15013.2%7.6none–
157,75,58841.3%2.4none–
060,96,45443.6%2.3none–

Practise with pretend money

Draws use your browser’s random numbers and the figures above. There is no money in it, and it is not any lottery’s draw: it shows how many tickets it takes before anything happens, and how rarely the big prizes come.

The cost is fixed by the prizes and the ticket price, not by the method. With the example prizes about 49.6% of a ticket’s price comes back, so a ticket loses about ₹50, and 100 tickets lose about ₹5,038 whichever formula chose them.

The calculator runs in your browser and sends nothing anywhere, so you can try any numbers you like.

Common questions

Can a formula or calculator pick the numbers that will come up?

No. It can only choose which numbers you play, and every choice has the same chance. For a three-digit number a clever guess and a random guess are both 1 in 1,000, and the calculator’s figures hold whichever method made the guess.

Why do formulas built on past draws not work?

A formula that adds digits, counts gaps or tracks missing numbers fits a pattern to a finished list. The next draw is made fresh, so it owes nothing to that list. The formula’s pick is one set among many equal ones, no better than a random pick.

Is one set of lottery numbers likelier than another?

No. Every set of the same size has exactly the same chance, 1 in 1,39,83,816 for 6 from 49, and 1-2-3-4-5-6 is no rarer than a set picked with care. What can differ is how many other people played the same numbers, which changes how a shared jackpot is split.

How many tickets until a jackpot is likelier than not?

For 6 from 49, 96,92,843 tickets, which is about 26,556 years of one ticket a day. A hundred tickets give a 1 in 1,39,839 chance of a jackpot and cost ₹10,000 at ₹100 each.

What does the average cost of a ticket mean?

It is what a ticket loses over very many tickets, not what the next one will do. Most tickets win nothing and a few win a lot, so the average is a summary of a very uneven spread.

More on the lottery odds

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