At a glance
- Birthday numbers have the same chance of being drawn as any others. The catch is elsewhere: lots of people play them.
- Since the game moved to 59 balls (October 2015), the six numbers drawn were all 31 or under on 15 nights. On those nights the jackpot was won 9 times out of 15 — against about 1 in 6 the rest of the time.
- When it is won on a "birthday night", it is split between more winners: 1.67 on average, against 1.15.
Birthday numbers are drawn like any other
Birthday numbers are drawn like any otherA birthday line uses only numbers from 1 to 31, because that is how many days a month has. Since October 2015, that leaves out 28 of the 59 balls.
That does not make the line less likely to win: every set of six has the same chance, 1 in 45,057,474. But it changes who you share with if you do win.
What happens on "birthday nights"
We looked at every UK Lotto draw since the switch to 59 balls on 10 October 2015 and split them in two:
| Draw nights since Oct 2015 | Draws | Jackpot won | Winners when won | Average share |
|---|---|---|---|---|
| All six numbers ≤ 31 | 15 | 9 (60%) | 1.67 | £5.0m |
| At least one number above 31 | 1,129 | 175 (15.5%) | 1.15 | £8.1m |
Fifteen nights is a small sample, so read the percentages with care. But the direction is clear, and it matches what happens in other lotteries: when the winning line looks like a birthday line, somebody out there usually has it — and often more than one person.
The record for sharing is older and not about birthdays: on 14 January 1995, the line 7 – 17 – 23 – 32 – 38 – 42 was held by 133 winners, who took £122,510 each. Popular lines are shared lines.
So what should you do with your birthday line?
Nothing changes your odds. If you like your dates, keep them. Two things are worth knowing, though:
- Mixing in a number above 31 does not make you more likely to win, but it makes it less likely that you would share the jackpot with lots of people who had the same idea.
- Your own line has a story. Enter it in My numbers to see every night since 1994 it would have won something.
Test your birthday numbers
- Open My numbers for UK Lotto.
- Enter your 6 dates (numbers 1 to 31).
- Choose the full history.
As an example, the line 3 – 7 – 12 – 19 – 25 – 31 would have paid out on 463 nights since 1994. Its best result: Match 4, £152, on 29 June 2024.
Go further
- Have my Lotto numbers ever won? — three real lines through 30 years of draws
- UK Lotto high vs low numbers — how often the top half of the board comes up
- Check your Lotto numbers against every draw since 1994
FAQ
Are birthday numbers less likely to win the Lotto?
No. Every combination has the same chance, 1 in 45,057,474 for the jackpot since October 2015. The difference is in how many people you might share a prize with.
How often are all six Lotto numbers 31 or under?
Rarely: on 15 of the 1,144 draws since October 2015, about 1.3% of nights. That is close to the 1.6% you would expect by chance.
Why is the jackpot won more often on those nights?
Because many players choose dates. When the winning line only uses numbers 1 to 31, it is more likely that at least one ticket, somewhere, matches it.
Can I check a birthday line I have played for years?
Yes. My numbers runs it against every draw since 19 November 1994 and shows each night it would have won, with the real prize paid.
Is this based on real draw data?
Yes. Every figure comes from the Fetix archive of UK Lotto draws, synced after each draw. Figures as of 25 September 2026.
Disclaimer
UK Lotto is a game of chance. Fetix does not sell tickets and does not promise any winnings.