Choose a Measurement
Select a measurement and convert between different units
Single conversion
To convert from Square Mile (mi2) to Square Millimeter (mm2), use the following formula:
With is the ratio between the base units Square Meter (m2) and Square Foot (ft2).
Let's convert 5 Square Mile (mi2) to Square Millimeter (mm2).
Using the formula:
Therefore, 5 Square Mile (mi2) is equal to Square Millimeter (mm2).
Here are some quick reference conversions from Square Mile (mi2) to Square Millimeter (mm2):
| Square Miles | Square Millimeters |
|---|---|
| 0.000001 mi2 | mm2 |
| 0.001 mi2 | mm2 |
| 0.1 mi2 | mm2 |
| 1 mi2 | mm2 |
| 2 mi2 | mm2 |
| 3 mi2 | mm2 |
| 4 mi2 | mm2 |
| 5 mi2 | mm2 |
| 6 mi2 | mm2 |
| 7 mi2 | mm2 |
| 8 mi2 | mm2 |
| 9 mi2 | mm2 |
| 10 mi2 | mm2 |
| 20 mi2 | mm2 |
| 30 mi2 | mm2 |
| 40 mi2 | mm2 |
| 50 mi2 | mm2 |
| 100 mi2 | mm2 |
| 1000 mi2 | mm2 |
| 10000 mi2 | mm2 |
A square mile (mi2), with its plural form being square miles, is an imperial unit of area equal to 27,878,400 square feet (ft2).
The "Square Mile" is the famous nickname for the City of London, the historic heart and central financial district of London, England.
This nickname comes from its compact geographical area of just 1.12 square miles (2.90 km2).
Despite its small size, it remains a global hub for finance and business, home to landmarks like the Bank of England and the London Stock Exchange.
Converting square miles to other units is essential for comparing land areas globally.
One square mile is equivalent to:
This is especially useful when comparing data from countries that use the imperial system (like the United States) with those that use the metric system.
In the United States, the square mile is a fundamental unit in the Public Land Survey System (PLSS).
This system, used since 1785 to survey and sell land, is based on a grid. Here's how it works:
A square millimeter (mm2), sometimes written as sq mm, is a unit of area in the metric system.
It represents a tiny area equal to one-millionth of a square meter (10-6 m2).
A square millimeter is a minuscule unit of area, representing a square with sides that are each one millimeter long.
To put its size into perspective, the head of a common pin is approximately one to two square millimeters. A single grain of fine sand can also cover an area of about one mm2.
This small scale makes it the ideal unit for measuring minute surfaces with high precision.
The square millimeter is a crucial unit in many technical and scientific fields. Its precision is essential for:
As part of the International System of Units (SI), the square millimeter relates directly to other standard units of area, making conversions straightforward.
The most common conversions are:
This simple, base-10 relationship is a key advantage of the metric system, particularly in scientific and international contexts.