How Many Millions Are in a Billion?
There are 1,000 millions in 1 billion. 1 billion is 1,000,000,000 and 1 million is 1,000,000, so dividing one by the other leaves 1,000. Going back the other way, 1 million is 0.001 billion.
The working
1 billion is 1,000,000,000 — 10⁹. 1 million is 1,000,000 — 10⁶. Subtracting the exponents gives 10³, which is 1,000.
So to turn billions into millions, multiply by 1,000: 7 billion is 7,000 million. To turn millions back into billions, divide by the same 1,000.
A useful sanity check when the numbers get large: count the zeros. Billion carries 9 and Million carries 6, and the difference — 3 — is exactly the number of zeros in the answer.
Billion to Million
| Billion | Million |
|---|---|
| 1 Billion | 1,000 Million |
| 2 Billion | 2,000 Million |
| 5 Billion | 5,000 Million |
| 10 Billion | 10,000 Million |
| 25 Billion | 25,000 Million |
| 50 Billion | 50,000 Million |
| 100 Billion | 100,000 Million |
| 500 Billion | 500,000 Million |
| 1,000 Billion | 1,000,000 Million |
Convert any amount
Indian system
International system
Frequently asked questions
How many millions make 1 billion?
1,000. 1 billion is 1,000,000,000; divide that by 1,000,000 and 1,000 is what is left.
How many millions are in 10 billions?
10,000. Every extra billion adds another 1,000 millions.
How do I convert millions back into billions?
Divide by 1,000. For example, 3,000 million is 3 billion.
Is that the same in India and Pakistan?
Yes. Lakh, crore, arab and kharab carry the same values across India, Pakistan, Bangladesh, Nepal and Sri Lanka. The difference is habit, not arithmetic: Pakistani and Urdu usage keeps counting in arab and kharab, while Indian English tends to stay in crore and say "lakh crore" for the very large figures.