How it's calculated
billions = millions ÷ 1,000
1 billion = 1,000 million. Divide a millions figure by 1,000 to get billions; multiply billions by 1,000 to go back to millions (short-scale).
Common values
| Millions | Billions |
|---|---|
| 500 million | 0.5 billion |
| 1,000 million | 1 billion |
| 2,500 million | 2.5 billion |
| 10,000 million | 10 billion |
Common questions
How many millions are in a billion?
On the short scale, 1,000 million make a billion.
Is the short-scale billion used everywhere?
It is standard in the US and modern UK. Some countries historically used a long-scale billion of a million million.