1,000,000,000 in Words
How to write and spell the number 1,000,000,000.
1,000,000,000 in words
one billion
Capitalised: One Billion
How to say it
To read 1,000,000,000 out loud, break it into groups of three digits from the right and name each group with its place value (thousand, million, and so on). That gives one billion.
When writing it on a cheque, capitalise each word: One Billion.
Spell another number
The number to words converter writes any number in words, including decimals and a cheque-style amount.
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Frequently asked questions
How do you write 1,000,000,000 in words?+
1,000,000,000 in words is written as "one billion".
How do you write 1,000,000,000 on a cheque?+
On a cheque you would write "One Billion" for the amount in words, capitalising the start of each word.