Number to Ordinal Converter
Turn numbers into ordinals like 1st, 2nd, and 3rd.
Numbers into ordinals
Turning a number into its ordinal form looks simple until the exceptions bite: 1st, 2nd, 3rd, but 11th, 12th, and 13th. This tool applies the rules correctly every time.
Enter 1, 2, 3, 11, 21 and it returns 1st, 2nd, 3rd, 11th, 21st. It handles a whole list at once, which is handy for rankings, dates, and generated text.
Correct and private
The conversion runs in your browser, so nothing you enter is uploaded.
Frequently Asked Questions
What is an ordinal?
A number showing position in a sequence — first, second, third — written as 1st, 2nd, 3rd, and so on.
How are the suffixes chosen?
Most numbers take th, but 1, 2, and 3 take st, nd, rd — except the teens 11, 12, 13, which all take th.
Can I convert a list?
Yes. Enter several numbers separated by spaces or commas and it returns each in ordinal form.
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