What are your actual odds of winning the lottery?
Most lottery players have a strong intuition about their odds, but the gap between that intuition and reality is surprisingly large. Enter your game and playing habits to see your actual probabilities and how they compare to familiar life events.
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UK lottery odds: all games compared
The UK National Lottery runs four main jackpot games, each with different odds, prize structures, and ticket prices. The table below shows the jackpot odds for each as published in the official game rules by Allwyn (the lottery operator).
| Game | Jackpot odds | Ticket price | Draw days |
|---|---|---|---|
| Lotto | 1 in 45,057,474 | £2.00 | Wed & Sat |
| EuroMillions | 1 in 139,838,160 | £2.50 | Tue & Fri |
| Set for Life | 1 in 15,339,390 | £1.50 | Mon & Thu |
| Thunderball | 1 in 8,060,598 | £1.00 | Tue, Wed, Fri, Sat |
How lottery odds compare to everyday events
The most useful way to understand lottery odds is to compare them to other probabilities. Being struck by lightning in any given year is roughly 1 in 300,000, making it approximately 150 times more likely than winning the Lotto jackpot in a single play. Sharing a birthday with a stranger is 1 in 365. Being left-handed is roughly 1 in 9. The lottery jackpot is one of the least likely events a person will encounter in everyday life.
| Event | Probability |
|---|---|
| Lotto jackpot (one ticket) | 1 in 45,057,474 |
| EuroMillions jackpot | 1 in 139,838,160 |
| Being struck by lightning (UK, per year) | 1 in 300,000 |
| Being ambidextrous | 1 in 100 |
| Sharing a birthday with a stranger | 1 in 365 |
| Being left-handed | 1 in 9 |
| Rolling a 6 on a die | 1 in 6 |
Set for Life lottery odds
Set for Life offers a jackpot prize of £10,000 per month for 30 years, rather than a lump sum. The jackpot odds are 1 in 15,339,390, making it significantly better odds than Lotto or EuroMillions, though still astronomically unlikely on any single play. The prize structure is unusual: the top prize is effectively a £3.6 million annuity rather than a traditional lump sum. Set for Life draws take place on Monday and Thursday each week, and tickets cost £1.50. The game launched in 2019 and has produced multiple jackpot winners. In terms of expected value per ticket, Set for Life and Thunderball offer the best odds among UK National Lottery games, though all games return significantly less than the ticket price in expected value.
Thunderball lottery odds
Thunderball has the best jackpot odds of any UK National Lottery game at 1 in 8,060,598, and the lowest ticket price at £1.00. The jackpot prize is capped at £500,000, which is substantially lower than Lotto or EuroMillions. Thunderball draws run four times per week (Tuesday, Wednesday, Friday, and Saturday), giving players the most frequent opportunities to play of any UK lottery game. The structure reflects a deliberate trade-off: more frequent draws with better individual odds but a smaller prize ceiling. For players who prefer more participation for a fixed weekly spend, Thunderball offers more plays per pound spent than any other UK National Lottery game.
What does the lottery return per pound spent?
Lotto returns approximately 53p for every £1 spent across all prize tiers. EuroMillions returns slightly more, around 55p per £1. This is the expected value calculation across all draws, including all prize tiers from the jackpot down to the smallest match prizes. The implied "house edge" of 45 to 47% is substantially higher than most forms of gambling: roulette has a house edge of around 2.7% (European) and slot machines typically 5 to 15%. The lottery is not a rational investment vehicle. The standard economic argument for lottery participation is the entertainment value of the possibility of winning, rather than the expected financial return. Whether £2 for a week of daydreaming is worth it is a personal valuation that economics cannot answer.
Frequently asked questions
Proportionally, yes, but in absolute terms still negligibly. Buying 10 Lotto tickets instead of one improves your odds from 1 in 45,057,474 to 1 in 4,505,747 -- ten times better, but still less than 0.00003% probability of winning. To reach a 1% probability of winning the Lotto jackpot in a single draw, you would need to buy 450,575 tickets at a cost of £901,150. The probability remains extremely low regardless of how many tickets you buy, and the cost of moving the needle meaningfully far exceeds any expected return.
No. The odds of winning the jackpot are the same regardless of how large the jackpot is. What changes with a rollover is the expected value calculation: if the jackpot is £100 million, the expected return per ticket improves, though it is almost never possible to make the lottery a positive expected value bet because the odds are so extreme. At a £100 million jackpot and 1 in 45 million odds, the expected return per £2 ticket is approximately £2.22, technically positive before tax, but this ignores the possibility of sharing the jackpot with multiple winners on a high-rollover draw, which substantially reduces the actual expected return.
No. Each draw is an independent random event. The probability of any individual number being drawn is identical to every other number in every draw. There is no statistical basis for "hot" or "cold" numbers. The apparent patterns in published frequency tables are explained entirely by random variation across a finite sample of draws. If you believe in the gambler's fallacy (that a number "due" to appear soon is more likely to appear), you are mistaken: past draws have no effect on future ones. From an expected value perspective, the only rational strategy is to choose numbers that fewer other players choose, reducing the probability of a shared jackpot if you win, which means avoiding popular combinations like birthdays and sequential numbers.
Yes, by the legal and statistical definition. The UK Gambling Commission regulates the National Lottery under the Gambling Act 2005. Lottery tickets are a form of gambling: you pay a stake for a chance at a prize, and the expected return is less than the stake. The distinction most people make is cultural rather than mathematical: the lottery is perceived as more socially acceptable than casino gambling or sports betting, partly because the prizes are very large and the per-play cost is low. From a harm reduction perspective, the lottery's low stake and infrequent draw structure make it lower-risk than continuous forms of gambling, but the underlying mechanism is the same.
The odds of winning the UK Lotto jackpot are 1 in 45,057,474. This is calculated from the combinatorial mathematics of choosing 6 correct numbers from a pool of 59. Buying two tickets doubles your chance to 2 in 45,057,474, which is still approximately 1 in 22.5 million. Since the Lotto moved from 49 balls to 59 balls in October 2015, jackpot odds increased significantly from 1 in 13,983,816, making wins less frequent but jackpots larger due to more rollovers. (Source: National Lottery official game rules)
The EuroMillions jackpot odds are 1 in 139,838,160, making it the hardest UK lottery game to win. Players must match 5 main numbers from 50 and 2 Lucky Star numbers from 12. This is more than three times harder than the Lotto. However, the EuroMillions minimum jackpot is £17 million (compared to Lotto's typical £4-5 million), and it can roll to a maximum cap of £200 million. The overall odds of winning any EuroMillions prize are 1 in 13. (Source: National Lottery official EuroMillions rules)
The average UK weekly lottery player spends approximately £3-4 per week, which amounts to £156-208 per year, according to the UK Gambling Commission's annual participation statistics. Over a 30-year playing career, a one-ticket-per-draw Lotto player spends approximately £3,120 in total. The expected statistical return on that investment across all prize tiers is roughly £780, meaning the net entertainment cost is around £2,340 over 30 years. (Sources: UK Gambling Commission; ONS Family Spending Survey)
If you invested £2 per week into a stocks and shares ISA returning a historically average 7% annual growth, after 30 years you would have approximately £10,200, based on compound interest calculations using historical FTSE All-Share returns. That compares to a statistical expected return of about £780 from 30 years of Lotto tickets. The comparison oversimplifies: lottery tickets provide entertainment value and the non-zero chance of a life-changing win. Behavioural economics research by Kahneman and Tversky demonstrates that humans systematically overweight tiny probabilities, which partly explains why people play despite unfavourable odds. (Source: Barclays Equity Gilt Study; Kahneman and Tversky, Prospect Theory, 1979)
Lottery odds are calculated using combinatorial mathematics. For any game where you choose K numbers from a pool of N, the number of possible combinations is given by the binomial coefficient: N! / (K! x (N-K)!). For Lotto (6 from 59), this gives 45,057,474 combinations. For games with a bonus ball drawn from a separate pool (like EuroMillions or Thunderball), you multiply the main-draw combinations by the bonus-pool combinations. These are exact mathematical figures, not estimates. The probability of winning with one ticket is 1 divided by the total combinations. (Source: combinatorial probability theory)
Yes, significantly. The odds of being struck by lightning in the UK in any given year are approximately 1 in 700,000, according to the Royal Statistical Society and historical Met Office data. The odds of winning the Lotto jackpot with a single ticket are 1 in 45,057,474, meaning you are roughly 64 times more likely to be struck by lightning. For EuroMillions, the ratio is even more extreme: you are approximately 200 times more likely to be struck by lightning than to win the EuroMillions jackpot. The comparison is not meant to discourage play, but to calibrate expectations about what the odds mean in practice. (Source: Royal Statistical Society; Met Office)
- UK National Lottery official game rules (Allwyn). thenationallottery.co.uk.
- UK Gambling Commission National Lottery Statistics 2024. gamblingcommission.gov.uk.
- ONS data for lightning strike comparison statistics.