Three Hundred and Ninety-Nine in Numbers

How to write 399 in words

The number 399 is written “three hundred and ninety-nine” in British English. Notice the word “and”: British English places it between the hundreds and the rest of the group. American English usually leaves it out. The hyphen in ninety-nine is not optional – every compound number from twenty-one to ninety-nine is hyphenated.

Because 399 is below one thousand it is a single group: name the hundreds, add "and", then name the remaining tens and units. That gives “three hundred and ninety-nine”.

In running text the number is normally lowercase: “the fee is three hundred and ninety-nine pounds”. At the start of a sentence, in a heading, or on a legal document it takes capitals: Three Hundred and Ninety-Nine. Formal documents often give both forms together, for example “three hundred and ninety-nine (399)”, so that a reader can check one against the other.

5 words · 25 letters

Three Hundred and Ninety-Nine in figures

To turn “three hundred and ninety-nine” back into digits, work group by group. Each group word (billion, million, thousand) marks a block of three digits. The result is 399, or 399 without separators.

How to write 399 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.

• With pence: add the pence after the pounds – “Three hundred and ninety-nine pounds and fifty pence only” for £399.50 – or write the pence as a fraction, “Three hundred and ninety-nine pounds 50/100”.
• US check: “Three hundred ninety-nine 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 three hundred and ninety-nine only”, with the figure written Tk. 399/=.

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.

399 in British and American English

This is one of the numbers where the two spellings differ. British English keeps “and” after the hundreds; American English generally drops it.

Both are correct in their own country and both are understood everywhere. For a UK cheque, contract or exam, use the British form. See British vs American English numbers for the full comparison.

399 in Bangla (বাংলায় ৩৯৯)

In Bangla, 399 is written ৩৯৯ using Bengali digits, and in words it is তিনশো নিরানব্বই. 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.

On a cheque or invoice written in Bangla the amount reads তিনশো নিরানব্বই টাকা মাত্র (“তিনশো নিরানব্বই taka only”). In English on the same cheque it is Taka three hundred and ninety-nine only – see How to write a cheque in Bangladesh.

Common mistakes when writing 399

• Missing the hyphen. three hundred and ninety nine is a very common misspelling. Write three hundred and ninety-nine.
• Dropping “and”. three hundred ninety-nine is American usage. In British English write three hundred and ninety-nine.
• Pluralising the group words. It is hundred, never “hundreds”, “thousands” or “millions” after a number.
• Mixing words and figures. In running text keep to one style: three hundred and ninety-nine or 399, not 399 (three hundred and ninety-nine) unless it is a legal document.

Other ways to write 399