Thunderball Odds Calculator & Combinations UK
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: June 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 | Approximate chance | Equivalent odds |
|---|---|---|
| 1 unique line | 0.000012406% | 1 in 8,060,598 |
| 7 unique lines | 0.000086842% | 1 in 1,151,514 |
| 14 unique lines | 0.000173684% | 1 in 575,757 |
| 21 unique lines | 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.
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.
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.
Use the Thunderball checker
Before buying any real ticket, you can use the Thunderball checker to check used 5-number + Thunderball combinations on Lottery-Checker’s shared board. Always buy tickets and check results through official authorised channels.
Related pages
- Thunderball checker - check used 5-number + Thunderball combinations.
- UK lottery odds calculator
- Avoid duplicate lottery lines guide
- Lottery syndicate duplicate-line planning guide
- EuroMillions Odds Calculator & Combinations UK
- Set For Life Odds Calculator & Combinations UK
- UK Lotto Odds Calculator & Combinations UK
FAQ
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.