NumbersAbout 100 billion
A hundred billion is ten thousand crore. In the traditional Indian names it is one kharab. It is a 1 followed by 11 zeros.
100 billion in other units
The same amount can be named in thousands, lakhs, millions, crores or billions. Divide by the size of the unit: a thousand has 3 zeros, a lakh 5, a million 6, a crore 7, a billion 9 and a trillion 12.
| Unit | 100 billion is |
|---|---|
| Thousands | 100,000,000 |
| Lakhs | 1,000,000 |
| Millions | 100,000 |
| Crores | 10,000 |
| Billions | 100 |
| Trillions | 0.1 |
Where the commas go
In the Indian system the first comma comes after three digits from the right and then after every two: 1,00,00,00,00,000. In the international system a comma comes after every three digits: 100,000,000,000. The digits are the same in both. The Indian form has 5 commas and the international form has 3.
Place value
100 billion has 12 digits. Its leading digit, 1, is in the ten thousand crores (kharab) place in the Indian system, which the international system calls the hundred billions place. Every place after it holds a zero.
How big is 100 billion?
- In time. 1,00,00,00,00,000 seconds make 3,170 years, 357 days, 9 hours, 46 minutes and 40 seconds. Counting aloud from 1 at one number a second, without a break, would take that long to reach 100 billion.
- In minutes. 1,00,00,00,00,000 minutes are 190,258 years, 274 days, 10 hours and 40 minutes.
- In money. 1,00,00,00,00,000 paise are ₹1,000,000,000. 1,00,00,00,00,000 one-rupee coins are, of course, ₹1,00,00,00,00,000, written on a cheque as "Rupees Ten Thousand Crore Only".
- In length and weight. 1,00,00,00,00,000 metres are 100,000,000 km, and 1,00,00,00,00,000 grams are 100,000,000 kg, which is 100,000 tonnes.
Ten times more and ten times less
Ten times 100 billion is 10,00,00,00,00,000 (1 lakh crore), which is 1 trillion. One tenth of it is 10,00,00,00,000 (1,000 crore), which is 10 billion. Each step adds or removes one zero.
Mistakes to avoid
- Count the zeros before you write: 100 billion has 11. One zero too many makes it ten times larger.
- Do not mix the comma styles in one number. Write 1,00,00,00,00,000 or 100,000,000,000.
- In words, the unit stays singular after a number: "100 billion", not "100 billions".
Common questions
How many zeros are there in 100 billion?
100 billion is written 1,00,00,00,00,000. It has 11 zeros and 12 digits in all.
What is 100 billion in lakhs and crores?
100 billion is 10,000 crore. In lakhs it is 1,000,000 lakh, in crores 10,000 crore and in millions 100,000 million.
How do you write 100 billion in words?
In the Indian system: ten thousand crore. In the international system: one hundred billion. In Hindi: एक खरब.