Normalise or normalize?
In American English write normalize; in British and Commonwealth English, normalise. normalise is a verb meaning “Non-Oxford British English standard spelling of normalize”; normalize is a verb meaning “To make normal, to bring into alignment with an established standard”. In written English (wordfreq, 2021 data) normalize is about 4.9 times as common as normalise.
What is the difference between normalise and normalize?
| normalise | normalize | |
|---|---|---|
| Part of speech | verb | verb |
| Meaning | To make normal, to bring into alignment with an established standard To consider normal, to treat as standard in the face of older norms | |
| Example | none recorded | There is little hope that the two countries will normalize relations; their governments seem to hate each other and would just as soon stay… |
| Forms | normalises, normalising, normalised | normalizes, normalizing, normalized |
| Pronunciation | not recorded | /ˈnɔː.mə.laɪz/ /ˈnɔɹ.mə.laɪz/ /ˈnoː.mə.lɑɪz/ |
| Region | UK | no label |
| In writing | about once in every 5 million words | 1.0 times per million words |
Sources: normalise and normalize in the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Every current meaning of normalise and normalize
normalize
- 1
To make normal, to bring into alignment with an established standard
There is little hope that the two countries will normalize relations; their governments seem to hate each other and would just as soon stay on bad terms
- 2
To consider normal, to treat as standard in the face of older norms
- 3
To format in a standardized manner, to make consistent
We'll need to normalize these statements before we can compare them
- 4
To become normal; to return to a normal state
- 5
To reduce the variations by excluding irrelevant aspects
After we properly normalize the measurements with respect to age, gender, geography and economic considerations, there remains little evidence of a difference between the two…
- 6
To return a set of points (switches) to the normal position
- 7
To return to the normal position from the reverse position
- 8
To subject to normalization; to eliminate redundancy in (a model for storing data)
Source: the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); obsolete, archaic, dialect and rare senses left out.
Which is more common, normalise or normalize?
normalise appears about once in every 5 million words; normalize 1.0 times per million words.
normalise about once in every 5 million wordsnormalize 1.0 times per million words
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How many people search normalise vs normalize?
“normalise vs normalize” is searched about 20 times a month on Google and 10 on Bing in the United States. Google counts close variants of a query together (“normalize vs normalise”, “normalise or normalize”).
Sources: Google Ads keyword data through DataForSEO and Microsoft Advertising keyword data through DataForSEO, the average month from September 2025 to August 2026.