321 billion = 321,000 million. 321 billion is 321,000,000,000 in digits, written 3,21,00,00,00,000 in the Indian system.
How to convert billion to million
million = billion × 1,000
- 1 billion = 1,000 million (and 1 million = 0.001 billion).
- Multiply the amount by the factor: 321 × 1,000 = 321,000.
- Answer: 321 billion = 321,000 million.
Indian and international place values
| Indian | Digits (Indian) | International |
|---|---|---|
| 1 lakh | 1,00,000 | 100 thousand |
| 10 lakh | 10,00,000 | 1 million |
| 1 crore | 1,00,00,000 | 10 million |
| 10 crore | 10,00,00,000 | 100 million |
| 100 crore (1 arab) | 1,00,00,00,000 | 1 billion |
| 1 lakh crore | 1,00,00,00,00,000 | 1 trillion |
Billion to Million table
| Billion (billion) | Million (million) |
|---|---|
| 316 billion | 316,000 million |
| 317 billion | 317,000 million |
| 318 billion | 318,000 million |
| 319 billion | 319,000 million |
| 320 billion | 320,000 million |
| 321 billion | 321,000 million |
| 322 billion | 322,000 million |
| 323 billion | 323,000 million |
| 324 billion | 324,000 million |
| 325 billion | 325,000 million |
| 326 billion | 326,000 million |
| billion | million |
|---|---|
| 1 billion | 1,000 million |
| 2 billion | 2,000 million |
| 5 billion | 5,000 million |
| 10 billion | 10,000 million |
| 50 billion | 50,000 million |
| 100 billion | 100,000 million |
Good to know
1 lakh = 100,000 (1,00,000) and 1 crore = 10 million (1,00,00,000).
1 million = 10 lakh, 1 billion = 100 crore, 1 trillion = 1 lakh crore.
The Indian system groups digits in twos after the first three (15,00,00,000); the international system groups in threes (150,000,000).