What is 85ft² in Square Miles?

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What is 85 Square Feet (85ft²) in Square Miles (mi²)?

What is 85ft² in mi²? Convert 85 Square Feet (85ft²) to Square Miles (mi²) and show formula, brief history on the units and quick maths for the conversion.

Enter Square Feet to convert to Square Miles


Quick Reference for Converting Square Feet to Square Miles

Formula
mi² = ft² / 27878398.81
Quick Rough Maths
To get the Square Miles, divide the number of Square Feet by 27.9 million
Square Feet (ft²) in 1 Square Mile
There are 27878398.81 Square Feet in 1 Square Mile
Square Miles (mi²) in 1 Square Foot
There are 0 Square Miles 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 Mile
/skwɛːˌmʌɪl/
Symbol: mi²
Unit System: Imperial

What is the Square Mile?

The square mile is a unit of area and is an imperial unit with the symbol mi².

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

The Romans established the square mile; computed through a system of feet, paces and marches. The square mile's existence still remains in some places; for example "The Square Mile" is a term often used to describe the very centre of London in the UK (which just so happens to measure 1mi²).


Conversion Tables for Square Feet (ft²) to Square Miles (mi²)