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Number to words · British English

One Hundred Billion in Numbers

One Hundred Billion is written 100,000,000,000 in numbers, and 100,000,000,000 in words is “one hundred billion”. Below you will find the spelling, the cheque wording, the place values and the American and Indian forms.

In figures

100,000,000,000

In words

One hundred billion

Cheque: One hundred billion pounds only

100,000,000,000 at a glance

Number
100,000,000,000
In words (British)
one hundred billion
Title Case
One Hundred Billion
American English
one hundred billion
Cheque (UK)
One hundred billion pounds only
Cheque (US)
One hundred billion and 00/100 dollars
Cheque (Bangladesh)
Taka ten thousand crore only
Shorthand
100bn
Indian system
1,00,00,00,00,000 – ten thousand crore
In Bangla
১,০০,০০,০০,০০,০০০ – দশ হাজার কোটি
Ordinal
100,000,000,000th – one hundred billionth
Scientific notation
1 × 10¹¹
Digits
12 digits · even number

How to write 100,000,000,000 in words

The number 100,000,000,000 is written “one hundred billion” in British English.

Because 100,000,000,000 is below one thousand it is a single group: name the hundreds and stop. That gives “one hundred billion”.

In running text the number is normally lowercase: “the fee is one hundred billion pounds”. At the start of a sentence, in a heading, or on a legal document it takes capitals: One Hundred Billion. Formal documents often give both forms together, for example “one hundred billion (100,000,000,000)”, so that a reader can check one against the other.

3 words · 17 letters · 100,000,000,000 = 100 × 1,000,000,000 (one billion)

One Hundred Billion in figures

To turn “one hundred billion” back into digits, work group by group. Each group word (billion, million, thousand) marks a block of three digits. The result is 100,000,000,000, or 100000000000 without separators.

Place value of each digit in 100,000,000,000
hundred billionsten billionsbillionshundred millionsten millionsmillionshundred thousandsten thousandsthousandshundredstensones
100000000000
100,000,000,000———————————

Commas go after every third digit counting from the right: 100,000,000,000. In Britain and the United States this is the standard grouping; in much of Europe the same number appears as 100.000.000.000, and international scientific style uses spaces: 100 000 000 000.

How to write 100,000,000,000 on a cheque

Banks read the amount in words as the legal amount, so it must be exact. Write the pounds in words, add the word pounds, and finish with only so that nothing can be added afterwards.

Pay

£100,000,000,000.00

One hundred billion pounds only

Amount in words · UK cheque

  • With pence: add the pence after the pounds – “One hundred billion pounds and fifty pence only” for £100,000,000,000.50 – or write the pence as a fraction, “One hundred billion pounds 50/100”.
  • US check: “One hundred billion and 00/100 dollars”. American cheques drop the “and” after the hundreds and put it before the cents.
  • Bangladesh, India and Pakistan: the currency word comes first and the amount is counted in lakh and crore – “Taka ten thousand crore only”, with the figure written Tk. 1,00,00,00,00,000/=.
100,000,000,000 in words on a cheque, by currency
CurrencyFiguresAmount in words
Pound sterlingUnited Kingdom£100,000,000,000.00One hundred billion pounds only
US dollarUnited States$100,000,000,000.00One hundred billion and 00/100 dollars
EuroEurozone€100,000,000,000.00One hundred billion euros only
Indian rupeeIndia₹1,00,00,00,00,000.00Rupees ten thousand crore only
Bangladeshi takaBangladeshTk. 1,00,00,00,00,000/=Taka ten thousand crore only
Pakistani rupeePakistanRs. 1,00,00,00,00,000/-Rupees ten thousand crore only

Read the full guide to writing a UK cheque or the guide to writing a cheque in Bangladesh for the layout, the date, and what to do if the words and figures disagree.

100,000,000,000 in British and American English

100,000,000,000 is spelled exactly the same way – “one hundred billion” – in British and American English. The two varieties only differ when a number contains hundreds followed by tens or units, where British English adds “and”. Read more in our guide to British vs American English numbers.

100,000,000,000 in lakh and crore (India, Bangladesh and Pakistan)

In India, Pakistan, Bangladesh and Nepal, large numbers are grouped differently. After the first thousand the digits are grouped in twos, and the units are lakh (100,000) and crore (10,000,000). So 100,000,000,000 becomes 1,00,00,00,00,000, read as “ten thousand crore” – or simply 10,000 crore.

SystemFiguresWords
International100,000,000,000one hundred billion
Indian1,00,00,00,00,000ten thousand crore

On an Indian cheque or invoice the amount reads “Rupees ten thousand crore only”; in Bangladesh it is “Taka ten thousand crore only”. Our lakh and crore conversion guide explains the system in full.

100,000,000,000 in Bangla (বাংলায় ১,০০,০০,০০,০০,০০০)

In Bangla, 100,000,000,000 is written ১,০০,০০,০০,০০,০০০ using Bengali digits, and in words it is দশ হাজার কোটি. Bangla has its own word for every number from one to ninety-nine, and above that it counts in হাজার (thousand), লাখ (lakh) and কোটি (crore), the same grouping used across Bangladesh and India.

সংখ্যায় · In figures

১,০০,০০,০০,০০,০০০

কথায় · In words

দশ হাজার কোটি

On a cheque or invoice written in Bangla the amount reads দশ হাজার কোটি টাকা মাত্র (“দশ হাজার কোটি taka only”). In English on the same cheque it is Taka ten thousand crore only – see How to write a cheque in Bangladesh.

Common mistakes when writing 100,000,000,000

  • Pluralising the group words. It is hundred, billion, never “hundreds”, “thousands” or “millions” after a number.
  • Using shorthand in formal documents. 100bn is fine in a message, but a cheque or contract needs one hundred billion or 100,000,000,000.
  • Miscounting the zeros. 100,000,000,000 has 12 digits. Check the commas: every group between commas should have exactly three digits.

Other ways to write 100,000,000,000

With commas (UK/US)100,000,000,000
Without separators100000000000
With spaces (SI)100 000 000 000
European style100.000.000.000
Shorthand100bn
Indian grouping1,00,00,00,00,000
Scientific notation1 × 10¹¹
Expanded form100,000,000,000
Ordinal100,000,000,000th (one hundred billionth)
As a multiple100 × 1,000,000,000

Half of 100,000,000,000 is 50,000,000,000 (fifty billion).

Numbers near 100,000,000,000

Questions about 100,000,000,000

What is 100,000,000,000 in words?

100,000,000,000 in words is "one hundred billion". In Title Case, as on a formal document, it is "One Hundred Billion". This is the standard British English spelling.

How do you write one hundred billion in numbers?

One hundred billion in numbers is 100,000,000,000 (100000000000 without the comma separators).

How do you write 100,000,000,000 on a cheque?

On a UK cheque write "One hundred billion pounds only" in the amount-in-words box and £100,000,000,000.00 in the figures box. On a US check the wording is "One hundred billion and 00/100 dollars".

How do you write 100,000,000,000 taka in words?

On a Bangladeshi cheque or invoice write "Taka ten thousand crore only" and the figure as Tk. 1,00,00,00,00,000/=. Bangladesh counts in lakh and crore, so the words follow the South Asian system (1,00,00,00,00,000).

Is 100,000,000,000 written differently in American English?

No. 100,000,000,000 is "one hundred billion" in both British and American English, because there is no "and" to add or remove in this number.

What is 100,000,000,000 in Bangla?

100,000,000,000 in Bangla is ১,০০,০০,০০,০০,০০০, written in words as "দশ হাজার কোটি". On a Bangladeshi cheque in Bangla it reads "দশ হাজার কোটি টাকা মাত্র".

How do you write 100,000,000,000 in the Indian numbering system?

In India 100,000,000,000 is written 1,00,00,00,00,000 and read as "ten thousand crore" (10,000 crore). On an Indian cheque you would write "Rupees ten thousand crore only".

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