How it works
Converted amount = amount × 10^(from exponent − to exponent). Million to billion = amount ÷ 1,000.
- Enter an amount, including decimals or a minus sign.
- Choose the scale you have and the scale you want.
- Read the exact conversion and the same number in every unit.
Worked example: 2,500 million ÷ 1,000 = 2.5 billion. The full number is 2,500,000,000 and its scientific notation is 2.5 × 10⁹. It is also 250 crore.
Millions in billions
| Million | Converted value | Full number (international grouping) |
|---|---|---|
| 1 | 0.001 billion | 1,000,000 |
| 10 | 0.01 billion | 10,000,000 |
| 100 | 0.1 billion | 100,000,000 |
| 500 | 0.5 billion | 500,000,000 |
| 1000 | 1 billion | 1,000,000,000 |
| 2500 | 2.5 billion | 2,500,000,000 |
| 10000 | 10 billion | 10,000,000,000 |
| 1000000 | 1,000 billion | 1,000,000,000,000 |
Swipe the table sideways to see the rest.
All examples use short-scale billions and exact decimal values.
Things to consider
- Check whether a source uses short or long scale.
- One lakh is 100,000; one crore is 10,000,000.
- Digit grouping changes presentation, not value.
- Trailing zeros count only zeros at the end of a nonzero integer.
Frequently asked questions
How many millions are in a billion?
On the short scale, one billion is 1,000 million. Both describe the full number 1,000,000,000.
How many zeros are in a billion and a trillion?
One billion is 1 followed by 9 zeros. One trillion is 1 followed by 12 zeros. An amount such as 2.5 billion is 2,500,000,000, with 8 trailing zeros, so the unit's zero count and the full number's trailing zeros are different.
How do I convert million to billion?
Divide the amount in millions by 1,000. For example, 2,500 million is 2.5 billion. To convert billion to million, multiply by 1,000.
What are lakh and crore?
One lakh is 100,000 and one crore is 10,000,000. Ten lakh equal one million; one crore equals ten million; one billion equals 100 crore. Indian grouping places the last three digits together, then groups earlier digits in pairs: 2,500,000,000 becomes 2,50,00,00,000.
What is the difference between short and long scale?
This page uses the short scale common in modern English: million is 10⁶, billion is 10⁹ and trillion is 10¹². On the long scale, billion can mean 10¹². Some languages use milliard for 10⁹ and billion for 10¹². Check the source's meaning before converting.
Results are estimates for general information only, not financial, medical or professional advice.