“Micrometers” or “Micrometres”—What's the difference?

Usage by country

Where each spelling is used

Of the 12 countries below, 10 prefer “micrometers” and 0 prefer “micrometres”. Usage levels are out of 100; the more common spelling in each country is in bold.

Usage level out of 100 (if available).
Country	micrometers	micrometres	Preference
United States	100	0	“micrometers”
United Kingdom	72	28	“micrometers”
India	84	16	“micrometers”
Philippines	100	0	“micrometers”
Canada	90	10	“micrometers”
Australia	68	32	“micrometers”
Liberia	0	0	Not enough data
Ireland	100	0	“micrometers”
New Zealand	79	21	“micrometers”
Jamaica	100	0	“micrometers”
Trinidad & Tobago	100	0	“micrometers”
Guyana	0	0	Not enough data

Usage

Examples in context

Real sentences for each spelling. Hover an example to copy it.

“micrometers”

…measure to be approximately 174.2 micrometers (lengthwise) by 104 micrometers(width) in
…thin fibers of around 12-16 micrometers for quality fiber, and what…
…near infrared wavelength of 2 micrometers, it is calculated to be…
…to few to tens of micrometers.
…it must be under 18.5 micrometers in diameter and be at…
…near 100 Jy at 5 micrometers.
…for anything from a few micrometers to 0.5 mm.
…is necessary; large grains, 35 micrometers or larger, lead to weak…
Bacteria-sized particles, below 0.5 micrometers, pass through the ostia and…
…distances on the order of micrometers.

“micrometres”

…all are generally under 100 micrometres in size, and are, therefore,…
…a wavelength of a few micrometres, even though the optics community…
…ellipsoid, measuring 7.5–9 by 7.5–9 micrometres.
…merozoites measure 10 x 10 micrometres.
Typical filtration is to 2 micrometres, but really depends on reservoir
…off in flux beyond 1.13 micrometres with the VLT.
…non-motile, Gram-negative, irregular-shaped cocci, 0.5-1.5 micrometres in size.
…band from 1.05 to 4.8 micrometres.
…surface roughness less than 10 micrometres and was expected to last…
…of up to several hundred micrometres and very high aspect ratios.

Examples are Wikipedia snippets under the CC ShareAlike 3.0 license.

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