421 lakh = 0.0421 billion. 421 lakh is 42,100,000 in digits, written 4,21,00,000 in the Indian system.
How to convert lakh to billion
billion = lakh × 0.0001
- 1 lakh = 0.0001 billion (and 1 billion = 10,000 lakh).
- Multiply the amount by the factor: 421 × 0.0001 = 0.0421.
- Answer: 421 lakh = 0.0421 billion.
Shortcut: dividing by 10,000 gives the same result as multiplying by 0.0001.
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 |
Lakh to Billion table
| Lakh (lakh) | Billion (billion) |
|---|---|
| 416 lakh | 0.0416 billion |
| 417 lakh | 0.0417 billion |
| 418 lakh | 0.0418 billion |
| 419 lakh | 0.0419 billion |
| 420 lakh | 0.042 billion |
| 421 lakh | 0.0421 billion |
| 422 lakh | 0.0422 billion |
| 423 lakh | 0.0423 billion |
| 424 lakh | 0.0424 billion |
| 425 lakh | 0.0425 billion |
| 426 lakh | 0.0426 billion |
| lakh | billion |
|---|---|
| 1 lakh | 0.0001 billion |
| 2 lakh | 0.0002 billion |
| 5 lakh | 0.0005 billion |
| 10 lakh | 0.001 billion |
| 50 lakh | 0.005 billion |
| 100 lakh | 0.01 billion |
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).