Converter: How to Write Out Number 640.509 in Words, US American English, Number Converted (Spelled Out) in 8 Different Letter Cases

Decimal number 640.509 in words, (US) American English

six hundred forty and five hundred nine thousandths


~ or, simpler:


six hundred forty point five hundred nine


~ or, even simpler:


six hundred forty point five zero nine


Letter case 2 of 8
640.509 SPELLED OUT IN: UPPERCASE
ALL UPPERCASE LETTERS:

SIX HUNDRED FORTY AND FIVE HUNDRED NINE THOUSANDTHS


~ or, simpler:


SIX HUNDRED FORTY POINT FIVE HUNDRED NINE


~ or, even simpler:


SIX HUNDRED FORTY POINT FIVE ZERO NINE


Six Hundred Forty and Five Hundred Nine Thousandths


~ or, simpler:


Six Hundred Forty Point Five Hundred Nine


~ or, even simpler:


Six Hundred Forty Point Five Zero Nine


Letter case 4 of 8
640.509: Sentence case
Capital letter to start the sentence:

Six hundred forty and five hundred nine thousandths


~ or, simpler:


Six hundred forty point five hundred nine


~ or, even simpler:


Six hundred forty point five zero nine


Six Hundred Forty And Five Hundred Nine Thousandths


~ or, simpler:


Six Hundred Forty Point Five Hundred Nine


~ or, even simpler:


Six Hundred Forty Point Five Zero Nine


Letter case 6 of 8
640.509: camelCase
Spaces and punctuation removed,
first letter lower case,
subsequent words first letters uppercase:

sixHundredFortyAndFiveHundredNineThousandths


~ or, simpler:


sixHundredFortyPointFiveHundredNine


~ or, even simpler:


sixHundredFortyPointFiveZeroNine


Letter case 7 of 8
640.509: hyphen-case
punctuation - removed
spaces - replaced - by - hyphens:

six-hundred-forty-and-five-hundred-nine-thousandths


~ or, simpler:


six-hundred-forty-point-five-hundred-nine


~ or, even simpler:


six-hundred-forty-point-five-zero-nine


Letter case 8 of 8
640.509: snake_case
punctuation _ removed
spaces _ replaced _ by _ underscores:

six_hundred_forty_and_five_hundred_nine_thousandths


~ or, simpler:


six_hundred_forty_point_five_hundred_nine


~ or, even simpler:


six_hundred_forty_point_five_zero_nine


The decimal number 640.509 written out in: 'lowercase', 'UPPERCASE', 'Title Case', 'Sentence case', 'Start Case', 'camelCase', 'hyphen-case' and 'snake_case'.

Notes on Letter Cases used to write out in words the number above:

1: Lowercase: only lowercase letters are used. Example: 'seventy-six and two tenths'.


2: Uppercase: only uppercase letters are used. Example: 'SEVENTY-SIX AND TWO TENTHS'.


3. Title Case: first letter of each word is capitalized, except for certain short words, such as articles, conjunctions and short prepositions, 'a', 'an', 'the', 'and', 'but', 'for', 'at', 'by', 'to', 'or', 'in', etc. Example: 'Seventy-Six and Two Tenths'.


4. Sentence case: only the first letter of the first word is capitalized. Example: 'Seventy-six and two tenths'.


5. Start Case: first letter of each word is capitalized without exception. Example: 'Seventy-Six And Two Tenths'.


6. Camel Case: text has no spaces nor punctuation and first letter of each word is capitalized except for the very first letter in the series. Example: 'seventySixAndTwoTenths'.

Pascal Case: See the Camel Case above, but the first letter is also capitalized. Example: 'SeventySixAndTwoTenths'.


7. Hyphen Case: text has no spaces nor punctuation and the words are delimited by hyphen. Example: 'seventy-six-and-two-tenths'. Hyphen Case can be lowercase or uppercase.


8. Snake Case: text has no spaces nor punctuation and the words are delimited by underscore. Example: 'seventy_six_and_two_tenths'. Snake Case can be lowercase or uppercase.


Notes on Writing Out Numbers:

1: It's correct to hyphenate all compound numbers from twenty-one (21) through ninety-nine (99). The hyphen is the minus sign, as in 'thirty-four' (34).


2: In American English, unlike British English, when writing out natural numbers of three or more digits, the word 'and' is not used after 'hundred' or 'thousand': so it is 'one thousand two hundred thirty-four' and not 'one thousand two hundred and thirty-four'.


3. Do not use commas when writing out in words numbers above 999: so it is 'one thousand two hundred thirty-four' and not 'one thousand, two hundred thirty-four'.


4. Use commas when writing in digits numbers above 999: 1,234; 43,290, etc.


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Converter: Integer & Decimal Numbers to Words in (US) American English

Entered numbers are written out (converted, spelled out) in words in (US) American English in: (1) lowercase (2) UPPERCASE (3) Title Case (4) Sentence case (5) Start Case (6) camelCase (7) Hyphen-Case (8) Snake_Case.

How to write out numbers in words in (US) American English

1. How to convert natural numbers (positive integers) to (US) American English words, how to write them out (spell them out)?

1.1. To know how to write a number in words we must know the place value of each digit.

1.2. Notes:

Full article: how to write out integer and decimal numbers in words in (US) American English words (spell out numbers), using letters instead of numerals

2. When to write out numbers in words?

Full article: how to write out integer and decimal numbers in words in (US) American English (spell out numbers), using letters instead of numerals