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# What is the SI unit for diameter of an object?

Updated: 8/11/2023 Wiki User

12y ago

Diameter is measured linearly so officially, it would be meters. However any unit derived from the meter (cm, mm, etc.) would also be acceptable. New: Let's start off with the smallest practical metric unit of length, the millimerte (mm).

One inch contains 25.4 mm.

10 mm is equal to one centimetre (cm) or 2.54 inches

100 cm is equal to one metre (m) or 1.09 yards

1000 m is equal to one kilometre (km) or 0.62 miles Wiki User

14y ago  Study guides

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11y ago

a kilometer or a meter

143

143? Wossat?

The Earth's diameter would be quoted in kilometres (km).

Incidentally the metre was originally chosen as a fraction of the planet's polar circumference - not bad given the difficulty of measuring that at the time1 Then it became related to a standard bar kept in Paris. Now it's a multiple of wavelengths of light of a certain frequency - I don't know which but think it may be of sodium.   Wiki User

6y ago

The question does not make sense. The phrase "inch dia to meter" is nonsense. Further more, if it was a failed edit of "inch to diameter" it still does no make sense. That is like asking to convert inch to length.   Wiki User

6y ago

It doesn't matter whether you measure a diameter, or something else. To convert inches to metric units, you can:* Multiply by 25.4, to convert to mm

* Multiply by 0.0254, to convert to meters   Wiki User

11y ago

SI unit of length is meter

Of which the millimetre and kilometre are the "preferred" divisions and multiples respectively, not centimetres.   Wiki User

12y ago

Diameter is a length or distance. The unit of length is the meter.   Wiki User

13y ago

'Diameter' is just a length. In metric units, it can be millimeters, centimeters, meters, kilometers, etc.   Wiki User

12y ago

Diameter is a length. The basic SI unit of length is the meter.   Wiki User

8y ago

meter   Wiki User

11y ago

centimeters   Earn +20 pts
Q: What is the SI unit for diameter of an object?
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