Eight Hundred and Forty in Numbers

How to write 840 in words

The number 840 is written “eight hundred and forty” 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.

Because 840 is below one thousand it is a single group: name the hundreds, add "and", then name the remaining tens and units. That gives “eight hundred and forty”.

In running text the number is normally lowercase: “the fee is eight hundred and forty pounds”. At the start of a sentence, in a heading, or on a legal document it takes capitals: Eight Hundred and Forty. Formal documents often give both forms together, for example “eight hundred and forty (840)”, so that a reader can check one against the other.

4 words · 20 letters · 840 = 8.4 × 100 (one hundred)

Eight Hundred and Forty in figures

To turn “eight hundred and forty” back into digits, work group by group. Each group word (billion, million, thousand) marks a block of three digits. The result is 840, or 840 without separators.

How to write 840 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 – “Eight hundred and forty pounds and fifty pence only” for £840.50 – or write the pence as a fraction, “Eight hundred and forty pounds 50/100”.
• US check: “Eight hundred forty 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 eight hundred and forty only”, with the figure written Tk. 840/=.

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.

840 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.

840 in Bangla (বাংলায় ৮৪০)

In Bangla, 840 is written ৮৪০ using Bengali digits, and in words it is আটশো চল্লিশ. 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 আটশো চল্লিশ টাকা মাত্র (“আটশো চল্লিশ taka only”). In English on the same cheque it is Taka eight hundred and forty only – see How to write a cheque in Bangladesh.

Common mistakes when writing 840

• Dropping “and”. eight hundred forty is American usage. In British English write eight hundred and forty.
• 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: eight hundred and forty or 840, not 840 (eight hundred and forty) unless it is a legal document.

Other ways to write 840

Half of 840 is 420 (four hundred and twenty).