Lotto Odds Calculator

Lotto odds calculator for the UK Lotto: the chance of matching 2 to 6 numbers per line, and your odds over a year of lines and draws.

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Two draws a week for a year = 104.

Your odds

Odds per line–
As a percentage–
Chance across all your lines and draws–
Lines needed for a 50% chance–
Jackpot odds in this game–

Odds of matching exactly m of k numbers = C(k, m) × C(n − k, k − m) ÷ C(n, k), times the same sum for the bonus drum. Bonus balls drawn from the main drum (UK Lotto, Irish Lotto, Oz Lotto, Lotto Max) aren't covered here. Formats checked November 2026.

A lotto odds calculator turns 6 from 59 into something you can picture. The UK Lotto jackpot is 1 in 45,057,474 per line. Matching three numbers is 1 in 96, and matching two, which wins a free Lucky Dip, is about 1 in 10. The free calculator above gives the chance for every result and over any number of lines and draws.

The Lotto is drawn on Wednesdays and Saturdays, six numbers from 59, with a bonus ball drawn from the same drum.

Lotto odds calculator: every prize

Match Odds per line
6 (jackpot) 1 in 45,057,474
5 + bonus ball 1 in 7,509,579
5 1 in 144,415
4 1 in 2,180
3 1 in 96.2
2 (free Lucky Dip) 1 in 10.3

The bonus ball only matters if you’ve matched five. Because it comes out of the main drum, the calculator leaves that one tier aside and covers all the others.

Putting 1 in 45 million in context

For an even chance at the jackpot you’d need around 31 million different lines, about £62 million at £2 a line. If you bought one line a second, it would still take 17 months to cover every combination. Play two lines a draw for a year and your chance of the jackpot is about 1 in 217,000. Your chance of matching three at least once in that year is about 89%.

That’s the useful way to read the odds: the small prizes are regular, the big ones aren’t really part of the plan. For numbers, the UK Lotto number generator does Lucky Dips, and the lottery odds calculator compares Lotto with Thunderball, EuroMillions and the rest.

The Lotto is entertainment with very long odds. Play with spare change, not savings. BeGambleAware.org is free and confidential if it stops being fun.

Frequently asked questions

What are the odds of winning the UK Lotto?

The jackpot is 1 in 45,057,474 per line. Matching 3 numbers is 1 in 96, and 2 numbers (a free Lucky Dip) about 1 in 10.

What are the odds of matching 4 numbers on the Lotto?

About 1 in 2,180 per line.

How many tickets for a 50% chance at the jackpot?

About 31 million different lines, half of every possible combination.

Does the bonus ball change the jackpot odds?

No. It only decides the 5 + bonus prize, which is 1 in 7,509,579.

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