Lakh to billion
1 lakh = 0.0001 billion
Type a value in lakh (L) to get billion (B) straight away. Both units belong to indian number units, measured here against the one.
1 L = 0.0001 B
Formula
B = L × 0.0001
One lakh is 0.0001 billion, so multiply by that factor. You can also divide by 10,000, the number of lakh in one billion. Here L is the value in lakh and B is the result in billion.
Worked example: 5 lakh × 0.0001 = 0.0005 billion.
Lakh to billion table
| lakh (L) | billion (B) |
|---|---|
| 1 L | 0.0001 B |
| 2 L | 0.0002 B |
| 3 L | 0.0003 B |
| 4 L | 0.0004 B |
| 5 L | 0.0005 B |
| 6 L | 0.0006 B |
| 7 L | 0.0007 B |
| 8 L | 0.0008 B |
| 9 L | 0.0009 B |
| 10 L | 0.001 B |
| 15 L | 0.0015 B |
| 20 L | 0.002 B |
| 25 L | 0.0025 B |
| 30 L | 0.003 B |
| 40 L | 0.004 B |
| 50 L | 0.005 B |
| 60 L | 0.006 B |
| 75 L | 0.0075 B |
| 100 L | 0.01 B |
Everyday lakh in billion
| What it is | L | B |
|---|---|---|
| one lakh | 1 L | 0.0001 B |
| five lakh | 5 L | 0.0005 B |
| one million | 10 L | 0.001 B |
| a ₹12 lakh salary | 12 L | 0.0012 B |
| one crore | 100 L | 0.01 B |
Quick estimate in your head
Divide by 10^4: move the decimal point 4 places left.
Watch out for
- Indian notation groups digits as 1,00,000; international notation writes the same number as 100,000.
- Billion here is the short scale, 10⁹. Older British usage once meant 10¹².
About the units
Lakh (L). 100,000 (10⁵), written 1,00,000 in Indian notation. Used for salaries and prices in India.
Billion (B). 1,000,000,000 (10⁹), equal to 100 crore. The short-scale billion used today.
Going the other way, 1 billion is 10,000 lakh.
Questions
How many billion are in 1 lakh?
1 lakh is 0.0001 billion, and 1 billion is 10,000 lakh.
How do I convert lakh to billion?
Use B = L × 0.0001. For example, 5 lakh × 0.0001 = 0.0005 billion.
How are lakh and crore written with commas?
Indian notation groups the last three digits, then pairs: 1,00,000 is one lakh and 1,00,00,000 is one crore. Internationally the same numbers are 100,000 and 10,000,000.
How much is one crore in billion?
100 L is 0.01 B.
Source for the conversion factor: RBI glossary and Indian numbering conventions.