Online Area Units Converter
How to Convert from Square Foot (US Survey) to Square Mile [mi^2]

How to Convert from Square Foot (US Survey) to Square Mile [mi^2]

Learn how to accurately convert area measurements from square foot (US survey) to square mile using this online unit conversion tool designed for land surveying and mapping applications.

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Square foot (US survey) to Square mile [mi^2] Conversion Table

Square foot (US survey) Square mile [mi^2]

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.
Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.
Square foot (US survey) to Square mile [mi^2] Conversion Table
Square foot (US survey) Square mile [mi^2]

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What Is This Tool?

This tool enables precise conversion from square foot (US survey), a unit widely used in U.S. cadastral and legal land descriptions, to square miles, which are commonly applied to express larger land areas such as cities and counties.

How to Use This Tool?

  • Enter the area value in square foot (US survey)
  • Select square foot (US survey) as the from-unit
  • Choose square mile [mi^2] as the to-unit
  • Click convert to see the result in square miles

Key Features

  • Converts area values between square foot (US survey) and square mile units
  • Supports land surveying and legal property area calculations
  • Provides official conversion based on exact survey foot definitions
  • Suitable for real estate, GIS, and geographic data interpretation

Examples

  • 10,000 square foot (US survey) converts to approximately 0.0003587 square mile
  • 500,000 square foot (US survey) equals about 0.017935 square mile

Common Use Cases

  • Converting legal land parcel areas to express in larger administrative regions
  • Relating historical survey-foot measurements to modern square mile units
  • Analyzing property sizes within the context of cities or counties
  • Supporting geographic information system (GIS) land area calculations

Tips & Best Practices

  • Ensure inputs use the exact US survey foot to maintain conversion accuracy
  • Understand the difference between survey foot and international foot to avoid errors
  • Use precise values especially when converting large land areas
  • Verify results when interpreting data for legal or official purposes

Limitations

  • The US survey square foot differs slightly from the international square foot
  • Conversion accuracy relies on using the precise survey foot definition
  • Small conversion factors mean small input errors can cause noticeable output differences

Frequently Asked Questions

What is the square foot (US survey) used for?
It is mainly used in U.S. land surveying and legal property descriptions, especially where historical survey measurements are important.

How many square meters are in a square foot (US survey)?
A square foot (US survey) is exactly equal to (1200/3937)² square meters, approximately 0.092903403 m².

Why convert from square foot (US survey) to square mile?
Converting to square miles allows relating smaller parcel areas to larger geographic or administrative regions like cities or counties.

Key Terminology

Square Foot (US survey)
A unit of area based on the square of the U.S. survey foot, used mainly in legal land descriptions and cadastral surveys.
Square Mile [mi^2]
An imperial and U.S. customary area unit representing the area of a square with sides one international mile long.
Conversion Rate
The factor used to convert from square foot (US survey) to square mile, specifically 1 square foot (US survey) equals 3.5870207759843e-8 square mile.

Quick Knowledge Check

What is the definition of a square mile in this conversion?
What is a key use case for the square foot (US survey)?
Why is using the exact definition of the survey foot important?