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Number → Words
One billion
Standard American English spelling
Ordinal Form
1000000000th
One billionth
Number Format
1,000,000,000
1.00 × 10^9
On the written amount line of a check, write:
ONE BILLION AND 00/100
Always write the full amount in words on a check to prevent fraud. The “AND 00/100” indicates zero cents.
| Number | In Words |
|---|---|
| 100,000 | One hundred thousand |
| 500,000 | Five hundred thousand |
| 1,000,000 | One million |
| 1,000,000,000you | One billion |
1,000,000,000 in words is written as "One billion". This is the standard English spelling used in formal writing, checks, and legal documents.
On a check, write "ONE BILLION AND 00/100" on the amount line. The "AND 00/100" part represents zero cents. Always capitalize and write it clearly to avoid fraud.
1,000,000,000 as an ordinal number is "1000000000th" (written: "one billionth"). Ordinal numbers indicate position or rank in a sequence.
The number 1,000,000,000 is spelled: One billion. In British English, "and" is often inserted after hundreds (e.g., "one hundred and five"), but in American English it is typically omitted.