Odds · converter · country table
1 in 8 billion, in percent
1 in 8 billion is 0.0000000125%. But that is a population share. The odds of being born in a given country are much larger — India is about 1 in 6.
Four ways to write it
| Notation | Value |
|---|---|
| Fraction | 1 / 8,000,000,000 |
| Decimal | 0.000000000125 |
| Percent | 0.0000000125% |
| Scientific | 1.25 × 10⁻¹⁰ |
Convert any odds
Enter the denominator — the N in “1 in N” — to get the percentage, and the other way round.
Large denominators are shown in scientific notation. A country's birth share can be converted by entering N = 100 ÷ share.
The real odds, by country
These are the twelve largest shares of annual births. The denominator is calculated from births, not population.
| Country | Share of births | Odds |
|---|---|---|
| 🇮🇳 India | 17.44% | 1 in 6 |
| 🇨🇳 China | 7.10% | 1 in 14 |
| 🇳🇬 Nigeria | 5.75% | 1 in 17 |
| 🇵🇰 Pakistan | 5.22% | 1 in 19 |
| 🇨🇩 Democratic Republic of the Congo | 3.44% | 1 in 29 |
| 🇮🇩 Indonesia | 3.36% | 1 in 30 |
| 🇪🇹 Ethiopia | 3.18% | 1 in 31 |
| 🇺🇸 United States | 2.70% | 1 in 37 |
| 🇧🇩 Bangladesh | 2.62% | 1 in 38 |
| 🇧🇷 Brazil | 1.92% | 1 in 52 |
| 🇪🇬 Egypt | 1.85% | 1 in 54 |
| 🇹🇿 Tanzania | 1.83% | 1 in 55 |
Why the two numbers differ
1 in 8 billion divides one person by the whole population. The odds of being born somewhere divide that country's births by all births. The first is a scale; the second is a probability. Mixing them up is the most common mistake in articles about this phrase.