How do you write 1,001 in words?

One thousand one. In British English, "one thousand and one".

What is the ordinal of 1,001?

One thousand first, written 1001st.

1,001 in words

One thousand one

Number (1–3,999 for numerals)

Roman numeral

1,001 is written "one thousand one". British English inserts "and" before the final part, giving "one thousand and one"; American English leaves it out.

Where each word comes from

1,000 + 1 = 1,001
Digit	Place	Worth	Spoken as
1	thousands	1,000	one thousand
1	ones	1	one

The same number, other ways

In words (US): One thousand one
In words (UK): One thousand and one
Ordinal: 1001st — one thousand first
Roman numeral: MI
Digits: 1,001

Writing it on a cheque

On a cheque the amount line reads "One thousand and one and 00/100" — or "One thousand and one only" in Indian and much of Commonwealth practice. The fraction or the word "only" exists to stop anyone appending digits after what you wrote. Draw a line through any space left over for the same reason.

Common questions

How do you write 1,001 in words?: One thousand one. In British English, "one thousand and one".
What is the ordinal of 1,001?: One thousand first, written 1001st.

1,001 in Roman numerals MI
998 in words nine hundred ninety-eight
999 in words nine hundred ninety-nine
1,000 in words one thousand
1,002 in words one thousand two
0 in words zero
8 in words eight
11 in words eleven
12 in words twelve
13 in words thirteen
15 in words fifteen
19 in words nineteen
20 in words twenty

Sources

Calculated on this page — At One Place

How these figures are compiled and checked