“Millimeters” or “Millimetres”

Language

Millimeters and millimetres are both English terms.

Usage

Millimeters is predominantly used in 🇺🇸 American (US) English (en-US) while millimetres is predominantly used in 🇬🇧 British English (used in UK/AU/NZ) (en-GB).

In terms of actual appearance and usage, here's a breakdown by country, with usage level out of 100 (if available) 👇:

Term	US	UK	India	Philippines	Canada	Australia	Liberia	Ireland	New Zealand	Jamaica	Trinidad & Tobago	Guyana
millimeters	100	55	75	98	79	50	0	61	54	85	87	83
millimetres	0	45	25	2	21	50	0	39	46	15	13	17

• In the United States, there is a preference for "millimeters" over "millimetres" (100 to 0).
• In the United Kingdom, there is a preference for "millimeters" over "millimetres" (55 to 45).
• In India, there is a preference for "millimeters" over "millimetres" (75 to 25).
• In the Philippines, there is a preference for "millimeters" over "millimetres" (98 to 2).
• In Canada, there is a preference for "millimeters" over "millimetres" (79 to 21).
• In Australia, there is no clear preference between "millimeters" and "millimetres", with usage levels of 50 vs. 50.
• In Liberia, there is not enough data to determine a preference between "millimeters" and "millimetres".
• In Ireland, there is a preference for "millimeters" over "millimetres" (61 to 39).
• In New Zealand, there is a preference for "millimeters" over "millimetres" (54 to 46).
• In Jamaica, there is a preference for "millimeters" over "millimetres" (85 to 15).
• In Trinidad & Tobago, there is a preference for "millimeters" over "millimetres" (87 to 13).
• In Guyana, there is a preference for "millimeters" over "millimetres" (83 to 17).

Examples

Below, we provide some examples of when to use millimeters or millimetres with sample sentences.

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