Writing numbers in legal contracts.

Why both words and figures

The paired form is an error-control device. A single mistyped digit can change $250,000 into $25,000 or $2,500,000; the written words make the intended amount unambiguous and hard to alter. By long convention, where the words and figures in a contract disagree, the words generally prevail — which is exactly why the words must be written carefully.

The standard format

Write the amount in words first, then the figure in parentheses immediately after: "the sum of Two Hundred Fifty Thousand Dollars ($250,000)". Capitalize the spelled-out amount (it's common practice in contracts), keep the figure in standard grouping, and make sure the two match to the cent. For amounts with cents, carry them through both forms.

Spell out fully — no shorthand

Formal contracts don't use "250K" or "$250k". Shorthand is fine in a chat message, never in an executed agreement, because abbreviations are ambiguous and easy to dispute. Write "Two Hundred Fifty Thousand", in full. The converter produces the complete spelled-out form for any figure, which you then pair with the numeral.

Consistency across the document

Use the same convention every time a number appears: the same capitalization, the same words-then-figure order, and the same currency wording. If the contract is governed by US norms, follow the American style (no "and" inside the number); for UK or Indian contracts, the "and" convention applies. Decide once and hold to it. See using "and" in number words for that distinction.

Currency and jurisdiction

State the currency explicitly — "US Dollars", "Pounds Sterling", "Indian Rupees" — rather than relying on a symbol alone, especially in cross-border agreements where "$" is ambiguous. For Indian-rupee contracts, write amounts in the lakh/crore system the parties will recognise.