Tool to convert a number written in letters (with words) into a number written in digits (with 1,2,3,4,5,6,7,8,9,0). Reading numbers in letters is sometimes complicated.

Words in Numbers - dCode

Tag(s) : Numeral System

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⮞ Go to: Number in Letters

⮞ Go to: Word's Value

Numbers are particular words (or compound words) which have a writing in letters (`ONE`, `TWO`, `THREE`, etc.) but also, more commonly a dedicated writing in numbers (`1`, `2`, `3`, etc).

Numerical writing is used for its simplicity (more abbreviated notation) and its ease of understanding, it is also the preferred mathematical writing.

Conversion is based on English writing rules. The writing of numbers in whole letters in English follows some syntactic rules. dCode reads the words and recomposes the numbers.

__Example:__ `one hundred twenty-three` corresponds to `123`

zero | 0 |

one | 1 |

two | 2 |

three | 3 |

four | 4 |

five | 5 |

six | 6 |

seven | 7 |

eight | 8 |

nine | 9 |

ten | 10 |

eleven | 11 |

twelve | 12 |

thirteen | 13 |

fourteen | 14 |

fifteen | 15 |

sixteen | 16 |

seventeen | 17 |

eighteen | 18 |

nineteen | 19 |

twenty | 20 |

twenty-one | 21 |

twenty-two | 22 |

twenty-three | 23 |

twenty-four | 24 |

twenty-five | 25 |

thirty | 30 |

forty | 40 |

fifty | 50 |

sixty | 60 |

seventy | 70 |

eighty | 80 |

ninety | 90 |

hundred | 100 |

thousand | 1000 |

million | 1000000 |

billion | 1000000000 |

another number? | use the form on top of this page! |

To write large numbers, in typography, it is advisable to put a comma every thousand, but this notation is ambiguous in computing, so not recommended in this domain.

dCode provides another tool for writing numbers into letters.

To read large numbers, divide the number into groups of three digits (starting from the right). Then read each group using the corresponding words, adding the name of the appropriate power of ten (thousand, million, billion, etc.) between each group.

Beyond billions, it is better to use the scientific notation, if it is not the case, here is a table of the names of the big numbers:

billion | 1000000000 | 9 zeros |

trillion | 1000000000000 | 12 zeros |

quadrillion | 1000000000000000 | 15 zeros |

quintillion | 1000000000 000000000 | 18 zeros |

sextillion | 1000 000000000 000000000 | 21 zeros |

septillion | 1000000 000000000 000000000 | 24 zeros |

octillion | 1000000000 000000000 000000000 | 27 zeros |

nonillion | 1000 000000000 000000000 000000000 | 30 zeros |

decillion | 1000000 000000000 000000000 000000000 | 33 zeros |

undecillion | 1000000000 000000000 000000000 000000000 | 36 zeros |

dodecillion | 1000 000000000 000000000 000000000 000000000 | 39 zeros |

tredecillion | 1000000 000000000 000000000 000000000 000000000 | 42 zeros |

quattuordecillion | 1000000000 000000000 000000000 000000000 000000000 | 45 zeros |

quindecillion | 1000 000000000 000000000 000000000 000000000 000000000 | 48 zeros |

sexdecillion | 1000000 000000000 000000000 000000000 000000000 000000000 | 51 zeros |

septendecillion | 1000000000 000000000 000000000 000000000 000000000 000000000 | 54 zeros |

octodecillion | 1000 000000000 000000000 000000000 000000000 000000000 000000000 | 57 zeros |

novemdecillion | 1000000 000000000 000000000 000000000 000000000 000000000 000000000 | 60 zeros |

vigintillion | 1000000000 000000000 000000000 000000000 000000000 000000000 000000000 | 63 zeros |

infinity | 1000000000 …infinity… 000000000 | infinity of zeros |

Among the greatest numbers with a name, there are also more exotic names like the `gogol` which is worth $ 10^{100} $ that is the number 1 followed by 100 zeros or the gogolplex which is worth $ 10^{10^{100}} $ or the number 1 followed by a gogol of zeros.

When writing currencies (euros, dollars, etc.) some subunits can be used, like the cents `0.01`, or in India the `lakh` is worth `100000`

A comma is sometimes positioned every 3 digits to the left of the decimal point (especially for large numbers, so that they are easy to read).

The international system of units recommends the use of ` ` (thin space).

dCode avoids writing numbers with commas because they cause computer problems (for a computer, a number should never commas)

Cardinal numbers, such as `one`, `two`, `three`, etc., indicate a quantity or value (1, 2, 3, etc.).

Ordinal numbers, like `first`, `second`, `third`, etc., indicate order or position in a sequence.

dCode retains ownership of the "Words in Numbers" source code. Except explicit open source licence (indicated Creative Commons / free), the "Words in Numbers" algorithm, the applet or snippet (converter, solver, encryption / decryption, encoding / decoding, ciphering / deciphering, breaker, translator), or the "Words in Numbers" functions (calculate, convert, solve, decrypt / encrypt, decipher / cipher, decode / encode, translate) written in any informatic language (Python, Java, PHP, C#, Javascript, Matlab, etc.) and all data download, script, or API access for "Words in Numbers" are not public, same for offline use on PC, mobile, tablet, iPhone or Android app!

Reminder : dCode is free to use.

The copy-paste of the page "Words in Numbers" or any of its results, is allowed (even for commercial purposes) as long as you credit dCode!

Exporting results as a .csv or .txt file is free by clicking on the *export* icon

Cite as source (bibliography):

*Words in Numbers* on dCode.fr [online website], retrieved on 2024-09-13,

- Words into Number Converter
- Numbers into Words Converter
- Letters to Numbers Encryption
- Calculate Word Value
- What is the writing in digits of a number? (Definition)
- How to convert a number from letters to figures?
- How to write numbers in letters?
- How to read big numbers?
- Where to set commas in numbers?
- What is the difference between cardinal numbers and ordinal numbers?

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https://www.dcode.fr/writing-words-numbers

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