Inch vs Inches

When to use each in English, with meaning, register, and examples.

Inch

Top 1,000 (very common)B2noun

Inches

Top 2,000 (common)
Most common: Inch
 InchInches
Pronunciation🇬🇧 /["/ɪntʃ/"]/🇺🇸 /["/ɪntʃ/"]/🇬🇧 //ɪnʧɪz//🇺🇸 //ɪnʧɪz//
MeaningA small measure of length, equal to 1/12 of a foot.A unit of measure equal to 2.54 centimeters.
ExampleThe carpenter measured the wood and cut it to exactly one inch.The table is 30 inches long.
RegisterNeutralNeutral
How commonTop 1,000 (very common)Top 2,000 (common)
CEFR levelB2-
Part of speechnoun
Collocationsinch by inch, one inch, three inchesinches in length, measured in inches, several inches
Antonymsfoot, yardmiles, feet, yards
Common mistakesConfusing inches with centimeters., Incorrectly using 'inches' as a singular form., Mistaking 'inch' for other units like feet or yards.Confusing inches with centimeters when converting measurements., Using 'inches' without specifying the context, like height or length., Incorrect pluralization, saying 'inch' when referring to a measurement greater than one.
Usage notesUse 'inch' in most contexts involving measurements. It is common in everyday speech and writing, especially in the U.S. However, in scientific contexts, metric units are often preferred.Used in both everyday conversation and technical contexts. More common in the US than in metric-using countries. Avoid mixing inches with metric units in formal writing.

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Inches

Frequently asked questions: Inch vs Inches

What's the difference between Inch and Inches?

Inch: A small measure of length, equal to 1/12 of a foot. Inches: A unit of measure equal to 2.54 centimeters.

Which is more common: Inch and Inches?

Inch is the most common in everyday English.

Can you show an example of each?

Inch: The carpenter measured the wood and cut it to exactly one inch. Inches: The table is 30 inches long.

Can I use Inch and Inches interchangeably?

Not always. Inch and Inches are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.