Billion to trillion
1 billion = 0.001 trillion
Type a value in billion (B) to get trillion (T) straight away. Both units belong to indian number units, measured here against the one.
1 B = 0.001 T
Formula
T = B × 0.001
One billion is 0.001 trillion, so multiply by that factor. You can also divide by 1,000, the number of billion in one trillion. Here B is the value in billion and T is the result in trillion.
Worked example: 1 billion × 0.001 = 0.001 trillion.
Billion to trillion table
| billion (B) | trillion (T) |
|---|---|
| 1 B | 0.001 T |
| 2 B | 0.002 T |
| 3 B | 0.003 T |
| 4 B | 0.004 T |
| 5 B | 0.005 T |
| 6 B | 0.006 T |
| 7 B | 0.007 T |
| 8 B | 0.008 T |
| 9 B | 0.009 T |
| 10 B | 0.01 T |
| 15 B | 0.015 T |
| 20 B | 0.02 T |
| 25 B | 0.025 T |
| 30 B | 0.03 T |
| 40 B | 0.04 T |
| 50 B | 0.05 T |
| 60 B | 0.06 T |
| 75 B | 0.075 T |
| 100 B | 0.1 T |
Everyday billion in trillion
| What it is | B | T |
|---|---|---|
| 100 crore | 1 B | 0.001 T |
| a mid-size listed company | 5 B | 0.005 T |
| 1,000 crore | 10 B | 0.01 T |
| 10,000 crore | 100 B | 0.1 T |
| one trillion | 1,000 B | 1 T |
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.
- Trillion here is the short scale, 10¹². In Indian terms that is 1 lakh crore.
About the units
Billion (B). 1,000,000,000 (10⁹), equal to 100 crore. The short-scale billion used today.
Trillion (T). 10¹², equal to 1 lakh crore. Used for GDP and national budgets.
Going the other way, 1 trillion is 1,000 billion.
Questions
How many trillion are in 1 billion?
1 billion is 0.001 trillion, and 1 trillion is 1,000 billion.
How do I convert billion to trillion?
Use T = B × 0.001. For example, 1 billion × 0.001 = 0.001 trillion.
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 trillion in trillion?
1,000 B is 1 T.
Source for the conversion factor: RBI glossary and Indian numbering conventions.
Related conversions
- trillion to billion
- billion to crore
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- trillion to crore
- crore to trillion
- billion to lakh