Calculators
Odds to Percentage Converter: 1 in N and Per Million
Type odds as 1 in N, a percent or a count per million. The converter shows the other two forms and a plain sentence for the same chance.
Out of 1,000,000,000 tries, about 29.9 succeed. For an even chance you need about 23,183,098 tries; for 95%, about 100,195,680.
About as likely as a fair coin landing heads 25.0 times in a row, or one die showing a six 9.7 times in a row.
How it is calculated
Source: OLG game conditions checked Oct 29, 2026
Three ways to write one chance
| Form | What it says | Where you see it |
|---|---|---|
| 1 in N | One winning outcome among N equal outcomes | Game conditions and official odds tables |
| Percent | How many times out of a hundred | Everyday comparisons, news, school math |
| Per million | How many times out of a million | Very small chances, like jackpots |
All three forms describe the same chance. Only the way it is written changes.
From 1 in N to percent
percent = one hundred ÷ N; per million = one million ÷ N
Example: For example: 1 in 8 = 12.5% = 125,000 in a million.
From percent back to 1 in N
N = one hundred ÷ percent
Example: For example, in 1 in 8 = 12.5% = 125,000 in a million: one hundred ÷ the percent gives N, the number in the 1 in N form.
Real lottery odds to try
| Event | Published odds | Source |
|---|---|---|
| Lotto Max jackpot, 7 of 7 | 1 in 33,446,140 per play | Lotto Max game conditions |
| Daily Keno, ten-number pick, all ten match | 1 in 2,147,181 | OLG Daily Keno game conditions |
Paste either value into the converter above to see the percent and the count per million. For odds of any prize tier, use the lottery odds calculator.
Odds in vs odds to
1 in N – chance
- Counts all outcomes: one winning, the rest losing
- Used in the Lotto Max and Daily Keno game conditions
- This is the form the converter reads
1 to N – win to losses
- Compares one winning outcome with N losing ones
- 1 to N is the same chance as 1 in N+1
- Convert it to 1 in N first
Words on this page
- Odds
- A way to write a chance, usually as 1 in N on lottery tickets and game conditions.
- Probability
- The chance of an event as a share of all outcomes, from zero (never) to one (always).
- Percent
- Probability multiplied by one hundred.
- Per million
- How many times an event happens, on average, in a million equal tries.
- Odds written 1 to N
- One winning outcome compared with N losing ones, written 1 to N.
Sources
- OLG – Daily Keno past results and odds · checked Oct 29, 2026
- OLG – Lotto Max Game Conditions · checked Oct 29, 2026
- WCLC – Lotto Max Game Conditions, in effect 2026-04-10 · checked Oct 29, 2026
- OLG – Conditions de jeu du Lotto Max · checked Oct 29, 2026
- Loto-Québec – Conditions de jeu du Lotto Max, en vigueur le 2026-04-10 · checked Oct 29, 2026
- OLG – Daily Keno Game Conditions · checked Oct 29, 2026
- OLG – About Daily Keno · checked Oct 29, 2026
Questions
How do I convert lottery odds to a percentage?
Divide one hundred by N from the 1 in N form. For example: 1 in 8 = 12.5% = 125,000 in a million. The converter above does this for any game and also shows the count per million.
What does 1 in a million odds mean?
On average, one outcome in a million equal outcomes is the winning one. It does not mean a win comes after a million tries – each draw is separate. See the rarity scale for comparisons.
Is 1 to N the same as 1 in N?
No. 1 to N counts one win against N losses, so it equals 1 in N+1. The gap matters for small N and almost disappears for jackpot odds such as 1 in 33,446,140.
What is the Lotto Max jackpot chance as a percent?
The official odds are 1 in 33,446,140 per play. Type that value into the converter above to see it as a percent and per million – it is a tiny fraction of a percent.