Thunderball Odds Calculator | Combinations & Cost
This page explains the Thunderball combination total, lets you calculate the top-prize chance for any number of unique lines, and shows why duplicate planned lines reduce useful coverage when players plan together.
Last reviewed: July 2026
How many Thunderball combinations are possible?
Number selection
5 numbers from 1 to 39 + 1 Thunderball from 1 to 14.
Combination formula
C(39,5) × 14
Total full combinations
8,060,598
Thunderball uses 5 main numbers from 1 to 39 and 1 Thunderball from 1 to 14. The bonus part is selected separately from the Thunderball range. The total number of full top-prize combinations is 8,060,598.
Thunderball 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.
| Lines covered | Estimated ticket cost | Approximate chance | Equivalent odds |
|---|---|---|---|
| 1 unique line | £1.00 | 0.000012406% | 1 in 8,060,598 |
| 7 unique lines | £7.00 | 0.000086842% | 1 in 1,151,514 |
| 14 unique lines | £14.00 | 0.000173684% | 1 in 575,757 |
| 21 unique lines | £21.00 | 0.000260527% | 1 in 383,838 |
How the calculation works
For one unique line, the chance is:
1 ÷ 8,060,598 × 100
For several unique lines, the chance is:
number of unique lines ÷ 8,060,598 × 100
Example: with 7 unique Thunderball lines, the top-prize chance is 7 ÷ 8,060,598 × 100 = 0.000086842%.
Calculate your chance by number of unique lines
Enter any number of unique 5-number + Thunderball lines from 1 to 8,060,598 to calculate the approximate top-prize chance and estimated ticket cost.
This calculator assumes every line is unique. Repeated lines do not cover another possible combination. It shows the chance of matching the full top-prize combination only, not the chance of winning any smaller prize. Cost is an estimate using £1 per Thunderball line; official channels and prices always prevail.
Why unique Thunderball lines matter
If several Thunderball players use favourite numbers, repeats can happen quickly. Checking the shared board first helps the group cover different full 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 Thunderball results and plan new lines
The Thunderball results checker compares lines saved on this browser, or 1-7 lines you type for a one-off check, with the latest published draw. After checking the result, use the shared board to plan new 5-number + Thunderball combinations and avoid lines already marked here.
Related pages
Continue with the Thunderball checker, compare other games, or read how repeated lines affect useful coverage.
Frequently asked questions
Are these the chances of winning any prize?
No. They show the chance of matching the full top-prize combination only. Smaller prize tiers have different 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.