UK Lotto Odds Calculator | Prize Tiers & Jackpot Odds
Explore every UK Lotto prize tier for one line, including the chance of any prize, or calculate jackpot odds for several different lines. Choose how many draws to include and see the ticket cost.
UK Lotto prize-tier and jackpot odds calculator
Choose Prize-tier odds for one line per draw, or Jackpot: multiple lines for different complete lines. Both modes calculate the chance across your chosen number of draws and the total ticket cost.
How many UK Lotto combinations are possible?
Number selection
6 numbers from 1 to 59.
Combination formula
C(59,6)
Combinations per round
45,057,474
Current format
Two result rounds per entered line in each draw.
UK Lotto uses 6 main numbers from 1 to 59. There are 45,057,474 possible six-number combinations in one result round. Under the current two-round format, the same entered line is checked against two separate result rounds, each with its own Bonus Ball.
UK Lotto top-prize chance by unique lines
The table assumes every line is different in the same draw. Repeating a line does not cover another possible combination. The approximate chance below is for matching all six numbers in either current Lotto round.
| Lines covered | Estimated ticket cost | Approximate chance | Equivalent odds |
|---|---|---|---|
| 1 unique line | £2.00 | 0.000004439% | about 1 in 22,528,737 |
| 7 unique lines | £14.00 | 0.000031071% | about 1 in 3,218,391 |
| 14 unique lines | £28.00 | 0.000062143% | about 1 in 1,609,196 |
| 21 unique lines | £42.00 | 0.000093214% | about 1 in 1,072,797 |
How the calculation works
For one Lotto result round, the chance is:
unique lines ÷ 45,057,474 × 100
For the current two-round Lotto format, the draw-level chance is:
1 - (1 - unique lines ÷ 45,057,474)²
Example: with 7 unique UK Lotto lines, the chance of matching all six numbers in either round is about 0.000031071%, or about 1 in 3,218,391.
Why unique UK Lotto lines matter
If 21 UK Lotto entries are planned but 5 are repeats, the group has only 16 unique combinations. Repeated lines do not cover extra six-number combinations.
Lottery-Checker cannot improve the official odds of any individual line. The practical benefit is organisation: if a line is already marked as used here, another player can choose a different line and cover a different combination instead of repeating the same one.
Check UK Lotto results and plan new lines
The UK Lotto results checker compares lines associated with this browser, or 1-7 lines you send for a one-off check that is not retained, with both rounds of the latest published draw and each round's Bonus Ball. After checking the result, use the shared board to plan new six-number combinations and avoid lines already marked here.
Related pages
Continue with the UK Lotto checker, compare other games, or read how repeated lines affect useful coverage.
Frequently asked questions
Are these the chances of winning any prize?
Yes. Select Prize-tier odds, then choose Any prize for one line per draw. You can also select an individual prize tier. The separate jackpot mode and unique-line examples cover only the full top-prize match.
What do exactly and at least once mean?
An exact match outcome fixes the number of main matches and the stated special-ball condition in one round. For example, exactly 3 main matches does not include 4 or 5 main matches.
At least once across 10 draws means that the selected exact outcome occurs one or more times during those draws. It does not include outcomes with more matching numbers. The calculator does not calculate a separate chance of matching at least a chosen number of balls.
Any prize combines all paying match outcomes instead of selecting one exact outcome. UK Lotto includes two separate rounds in each paid draw, so the selected outcome can occur in either round.
Why are lower-prize odds limited to one line per draw?
The chance of any prize across several lines depends on which numbers those lines share. A line count alone cannot determine that probability. The calculator therefore uses one line per draw for prize tiers and any-prize odds, and allows multiple different lines only for jackpot odds.
Does avoiding duplicate lines improve my odds?
It does not improve the odds of one individual line. It can help a group avoid repeating the same planned combination and cover more unique combinations.
Does marking a line buy a ticket?
No. Marking a line on Lottery-Checker is only a planning action. It does not buy a ticket or enter anyone into a draw.
Lotto rules and a two-round checking example
A Lotto line contains six different numbers from 1-59. In the current format, compare those same six numbers separately with Round 1 and Round 2. Each round has its own six main numbers and Bonus Ball. You do not select an additional Bonus Ball.
Illustrative numbers, not actual results: your line is 4, 13, 22, 31, 40, 49. If Round 1 is 4, 13, 22, 31, 40, 50 with Bonus Ball 49, that is five main matches plus the Bonus Ball in Round 1. If Round 2 is 4, 8, 13, 17, 22, 26 with Bonus Ball 31, that is three main matches in Round 2. Do not combine matches between rounds, and do not count the Bonus Ball as an extra main match.
Open the Lotto checker or choose the exact date in the Lotto archive. Older draws may use the earlier one-round format: use the rounds published for that date.
Prize-tier probabilities for one line
For one line, the chance of exactly m main matches is C(k, m) × C(n - k, k - m) ÷ C(n, k), where n is the main-ball pool size and k is the number of main balls selected. Multiply by the independent special-ball match probability where applicable. Any-prize odds add the mutually exclusive winning match outcomes within one round.
The chance of any prize across several lines depends on which numbers those lines share. A line count alone cannot determine that probability. The calculator therefore uses one line per draw for prize tiers and any-prize odds, and allows multiple different lines only for jackpot odds.
Jackpot formulas and assumptions
C(n, k) = n! / (k! × (n - k)!)
N = C(59, 6) = 45,057,474
P(at least one six-number match across two rounds) = 1 - (1 - u/N)2
u counts distinct six-number lines for that draw, from 0 to N. This assumes both rounds are independent, all unordered six-number outcomes are equally likely, and the same lines are entered in both rounds. The formula returns a probability. Multiply by 100 for a percentage. The result is slightly below 2u/N because matching in both rounds must be counted only once.
The Bonus Ball is drawn from the 53 numbers remaining after the six main numbers, rather than an independent pool. For exactly m main matches, the chance that the Bonus Ball matches one of the remaining selected numbers is (6 - m)/53. The five-plus-Bonus outcome is a separate winning tier. For d independent draw nights, jackpot mode uses 1 - (1 - u/N)2d.
For a selected tier with per-round probability p, the chance of that outcome at least once in one current Lotto draw is 1 - (1 - p)2. Across d draw nights it is 1 - (1 - p)2d. Any-prize odds first combine winning outcomes within a round, then apply the same two-round formula. Do not add the two-round tier percentages: a line can win different tiers in the two rounds. One £2 line covers both rounds, so the ticket cost is not doubled.
Probabilities are calculated from the game structure, with displayed odds rounded. Prize labels describe the relevant match tier, not expected profit. Raffles, optional extras, jackpot sharing, tax and the present value of annuity payments are outside these calculations. Past results and marks on the shared board do not change the odds.
Prize-tier source: official Lotto game procedures. Standard prize amounts can be affected by the limits and special-draw provisions in those rules. Sources: The National Lottery game summaries and Allwyn's explanation of the two-round Lotto format. See our calculation methodology.