Number To Words

Spell-likes an integer or decimal number in English using one of three modes: Cardinal (one, two, three...), Ordinal (first, second, third...), or Currency (N dollars and N cents). Supports values from negative up to just below one trillion, with proper handling of irregular ordinals and decimals.

1. Type a number in the Number input (e.g. 42 or -3.14). 2. Choose Cardinal, Ordinal, or Currency from the Mode dropdown. 3. Click Convert to spell out the number. 4. Empty, non-numeric, or out-of-range input triggers an error toast. 5. Click Copy to copy the spelled-out text.

Cardinal handles scales thousand, million, billion (up to ±1e12 exclusive) and emits 'negative' for negatives. Ordinal applies irregular mappings (one→first, two→second, three→third, five→fifth, eight→eighth, nine→ninth, twelve→twelfth), turns -y endings into -ieth, otherwise appends -th; decimals fall back to the floored cardinal + 'th'. Currency splits into dollars and cents joined by 'and', with singular/plural forms. Decimal cardinals read each fractional digit individually after 'point'.