UK Lotto simulator
See what happens if you buy UK National Lottery Lotto tickets — from 1 to 1,000,000, or until you hit the jackpot. A 3D drum draws both rounds of the night, and every ticket you bought is checked against them.
Buy 10 tickets and check them all against one draw.
Everything runs on this device. Draw results and your history are saved only in this browser.
Results so far
You haven't bought any tickets yet. Draw and the results will add up here.
| Prize | Wins | Odds |
|---|---|---|
| Jackpot£2,000,000 (est.)All 6 numbers | 0Official 1 in 22.5MActual — | Official 1 in 22.5MActual — |
| Match 5 + Bonus£1,000,0005 numbers + the Bonus Ball | 0Official 1 in 3.8MActual — | Official 1 in 3.8MActual — |
| Match 5£1,0005 numbers | 0Official 1 in 72,200Actual — | Official 1 in 72,200Actual — |
| Match 4£504 numbers | 0Official 1 in 1,090Actual — | Official 1 in 1,090Actual — |
| Match 3£103 numbers | 0Official 1 in 48Actual — | Official 1 in 48Actual — |
| Match 2£12 numbers | 0Official 1 in 5.4Actual — | Official 1 in 5.4Actual — |
Every draw is independent and random, and past results never change your chances. This is not a tool for predicting winners. It is for seeing the odds for yourself, and how the losses grow the more you buy.
Using the estimated prizes, the average return is about 40.9% (about £0.82 for 1 ticket). All prizes except the jackpot are the official fixed amounts. The jackpot changes from draw to draw with rollovers and the number of winners, so £2 million is used as an estimate. Each ticket enters both rounds on the same night and is checked against each round separately (so the expected value counts both rounds). Amounts are in pounds, with no currency conversion.
Everything runs on this device. Draw results and your history are saved only in this browser.
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How to use
1. Choose your numbers
In the panel below, choose “Pick my own” under “How to pick”, then tap 6 numbers from 1 to 59. “Quick pick” chooses them for you and “Copy” copies the numbers.
In the panel on the right, choose “Pick my own” under “How to pick”, then click 6 numbers from 1 to 59. “Quick pick” chooses them for you and “Copy” copies the numbers.
2. Choose how many, then draw
Choose how many tickets (1 to 1 million) under “Tickets to buy”, then scroll back up and tap “Buy and draw”. Your tickets appear and the drum spins twice, for Round 1 and Round 2, with 6 balls and the Bonus Ball rolling out one by one each time. When it stops, your tickets are checked against both rounds. Winning tickets get a stamp and the net shows below.
Choose how many tickets (1 to 1 million) under “Tickets to buy” and press “Buy and draw” on the left. Your tickets appear and the drum spins twice, for Round 1 and Round 2, with 6 balls and the Bonus Ball rolling out one by one each time. When it stops, your tickets are checked against both rounds. Winning tickets get a stamp and the net shows below.
3. Keep going, or draw until the jackpot
Choose “Keep going” under “Repeat” to keep drawing with the same number of tickets until you tap “Stop”. “Until jackpot” fast-forwards, stops at the draw that wins the jackpot, and shows how many draws it took and how much you spent.
Choose “Keep going” under “Repeat” to keep drawing with the same number of tickets until you press “Stop”. “Until jackpot” fast-forwards, stops at the draw that wins the jackpot, and shows how many draws it took and how much you spent.
4. See the results so far and the chart
Scroll down to “Results so far” to compare the money spent, money won, net and return rate, the chart of the net over time, and the official and actual odds for each prize. Change “Tickets per week” to see how many years that equals.
In “Results so far” below the draw, compare the money spent, money won, net and return rate, the chart of the net over time, and the official and actual odds for each prize. Change “Tickets per week” to see how many years that equals.
Good for
Seeing how far away the jackpot really is
Choose “Until jackpot” to see how many tickets and how many pounds it took, and how many years it would take buying every week — as if you'd really bought them.
Anyone who has wondered what it would take to win the Lotto jackpot
Checking before you play
With the current rules — £2 a ticket, two rounds a night — see how much of what you spend comes back when you buy 100 or 1,000 tickets, before you spend any real money.
People in the UK, or visiting, who are thinking about playing
Probability lessons and school projects
Buy 1 million tickets a few times and watch the share of Match 2 and Match 3 wins get closer and closer to the official odds. It's also a neat example of how entering two draws changes the odds.
Students and teachers of probability and statistics
Enjoying a TV-style draw
A drum of 59 balls spins and 6 balls and the Bonus Ball roll out one at a time, twice. In full screen, it looks just like the draw on TV.
Families and friends looking for some fun
Good to know before you start
- It doesn't predict winning numbers or suggest “lucky” numbers. Every combination has the same chance.
- You can't buy real tickets here, and there are no links to ticket sellers.
- The jackpot is an estimate of £2 million. Rolldowns after a run of rollovers and currency conversion aren't included.
UK Lotto odds and how this simulator works
Lotto is the UK National Lottery's pick-your-numbers game. You pick 6 numbers from 1 to 59, for 45,057,474 possible combinations. Draws are held twice a week, on Wednesday and Saturday, and since June 2026 each night has two rounds: one £2 ticket enters both. Matches from different rounds don't add up. The odds of a ticket winning the jackpot (all 6 numbers) in either round are about 1 in 22.5 million, so even buying 1 ticket for every draw, that works out to once every 217,000 years or so on average. The odds of winning any prize are about 1 in 4.9, but most of those wins are the £1 Match 2 prize.
For every draw, this simulator first decides the winning numbers for both rounds with your device's cryptographic random numbers (crypto.getRandomValues), then checks all the tickets you bought for that draw. Even with 1 million tickets there are only the night's two rounds, just like the real lottery. The 3D drum only replays numbers that were already decided. Checking runs separately from the screen (in a Web Worker), so the page doesn't freeze even with 1 million tickets. Your numbers and results stay on this device and are never sent anywhere.
FAQ
Common questions about the UK Lotto simulator.
Are my numbers or results sent anywhere?
No. All drawing and counting happens in the browser on this device, and your numbers and results stay only on this device. You can erase them with “Clear results”.
Can it predict which numbers are more likely to win?
No. Each Lotto draw is separate and completely random. Numbers that came up recently, “overdue” numbers, or patterns in the numbers you pick don't change your chances. This simulator is for fun and for understanding the odds, not for predictions.
How are the random numbers generated?
It uses the browser's cryptographic random number generator (crypto.getRandomValues) to pick, without bias, 6 different numbers and a Bonus Ball from 1 to 59, separately for each round. The 3D drum only shows the balls coming out in the order already decided — it never changes the result.
What are the “two rounds”?
Since June 2026, every Wednesday and Saturday draw night has two draws, Round 1 and Round 2. One £2 ticket enters both and is checked against each round on its own: 3 numbers in Round 1 and 3 in Round 2 don't make a Match 6. If a ticket wins in both rounds, it gets both prizes. In the table, the number of wins is the number of tickets that won that prize (a ticket winning the same prize in both rounds counts once, with the prize paid twice).
What prize amounts are used?
Every prize except the jackpot is the official fixed amount (£1 million, £1,000, £50, £10 and £1). The jackpot changes a lot with rollovers and the number of winners, so £2 million is used as an estimate. The rolldown rule, which shares out the jackpot to lower prizes after a run of rollovers, isn't included.
Are taxes included?
No. UK Lotto prizes are tax-free and paid as a lump sum, so the amounts are used as they are, in pounds, with no currency conversion.
What are the expected value and return rate?
With the jackpot at £2 million, the expected value of a £2 ticket is about £0.82, a return rate of about 41%. The more you buy, the closer your winnings get to that share of what you spent — the rest is a loss.
How long does “Until jackpot” take?
The odds are about 1 in 22.5 million, so on average it takes about 22.5 million tickets (about £45 million). Buying 1 million tickets per draw, that's about 23 draws on average, and with bad luck several times more. To quit partway, press “Stop” and the results so far are added.
Won't buying 1,000,000 tickets freeze the page?
No. Checking the tickets runs separately from the screen (in a Web Worker) and finishes while the draw machine spins. “Until jackpot” fast-forwards, and you can stop at any time with “Stop”.
The draw machine isn't showing in 3D.
The 3D drum uses WebGL. On devices or browsers without WebGL, a flat version shows the balls coming out one at a time instead. Results are decided the same way. If “Reduce motion” is turned on in your device settings, the animation is skipped and the result is shown right away.
How are the “years” calculated?
The number of tickets bought is divided by “Tickets per week” × 52 weeks. Lotto is drawn twice a week, on Wednesday and Saturday, so if you buy 1 ticket for every draw, choose “2 tickets”.
Is it free?
Yes, it's free. No sign-up needed, and there are no ads.
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