›› Measurement unit: zettameter

Full name: zettametre

Plural form: zettameters

Symbol: Zm

Alternate spelling: zettametres

Category type: length

Scale factor: 1.0E+21

›› SI unit: metre

The SI base unit for length is the metre.
1 metre is equal to 1.0E-21 zettameter.

Valid units must be of the length type.
You can use this form to select from known units:

Convert zettameter to

The SI prefix "zetta" represents a factor of 10²¹, or in exponential notation, 1E21.

So 1 zettametre = 10²¹ metre.