What is 420ft² in Square Kilometres?

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What is 420 Square Feet (420ft²) in Square Kilometres (km²)?

What is 420ft² in km²? Convert 420 Square Feet (420ft²) to Square Kilometres (km²) and show formula, brief history on the units and quick maths for the conversion.

Enter Square Feet to convert to Square Kilometres


Quick Reference for Converting Square Feet to Square Kilometres

Formula
km² = ft² / 10763910.42
Quick Rough Maths
To get the Square Kilometres, divide the number of Square Feet by 10.8 million
Square Feet (ft²) in 1 Square Kilometre
There are 10763910.42 Square Feet in 1 Square Kilometre
Square Kilometres (km²) in 1 Square Foot
There are 0 Square Kilometres in 1 Square Foot

Unit Information

Square Foot
/skwɛːˌfʊt/
Symbol: ft²
Unit System: Imperial

What is the Square Foot?

The square foot is a unit of area and is an imperial unit with the symbol ft².

One square foot is equal in area to a square with edges one foot in length.

It is used a lot in expressing the internal size of a house, apartment, office or other properties so is a useful unit to understand.

Square Kilometre
/skwɛːˌˈkɪləˌmiːtə,kɪˈlɒmɪtə/
Symbol: km²
Unit System: SI

What is the Square Kilometre?

The square kilometre is a unit of area and is a multiple of the square metre; an SI derived unit. It has the symbol km².

A square kilometre is equal to the area of a square with edges 1km long. There are 1,000,000 square metres in a square kilometre.

Square kilometres are often used to describe expansive areas of land due to the large unit size.


Conversion Tables for Square Feet (ft²) to Square Kilometres (km²)