Million to billion

1 million = 0.001 billion

Type a value in million (M) to get billion (B) straight away. Both units belong to indian number units, measured here against the one.

FromTo0.001

1 M = 0.001 B

Formula

B = M × 0.001

One million is 0.001 billion, so multiply by that factor. You can also divide by 1,000, the number of million in one billion. Here M is the value in million and B is the result in billion.

Worked example: 3 million × 0.001 = 0.003 billion.

Million to billion table

million (M)	billion (B)
1 M	0.001 B
2 M	0.002 B
3 M	0.003 B
4 M	0.004 B
5 M	0.005 B
6 M	0.006 B
7 M	0.007 B
8 M	0.008 B
9 M	0.009 B
10 M	0.01 B
15 M	0.015 B
20 M	0.02 B
25 M	0.025 B
30 M	0.03 B
40 M	0.04 B
50 M	0.05 B
60 M	0.06 B
75 M	0.075 B
100 M	0.1 B

Everyday million in billion

What it is	M	B
ten lakh	1 M	0.001 B
a startup seed round	3 M	0.003 B
one crore	10 M	0.01 B
ten crore	100 M	0.1 B
one billion	1,000 M	1 B

Quick estimate in your head

Divide by 10^3: move the decimal point 3 places left.

Watch out for

Billion here is the short scale, 10⁹. Older British usage once meant 10¹².

About the units

Million (M). 1,000,000 (10⁶), equal to 10 lakh. Used for international figures.

Billion (B). 1,000,000,000 (10⁹), equal to 100 crore. The short-scale billion used today.

Going the other way, 1 billion is 1,000 million.

Questions

How many billion are in 1 million?

1 million is 0.001 billion, and 1 billion is 1,000 million.

How do I convert million to billion?

Use B = M × 0.001. For example, 3 million × 0.001 = 0.003 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 billion in billion?

1,000 M is 1 B.

Source for the conversion factor: RBI glossary and Indian numbering conventions.

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