Convert square millimeters to square inches
Accurate tool to convert between mm² and in²
Area
1
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Square millimeters
The square millimeter is a metric unit of area equal to a square with 1mm sides.
Square inches
Formula
To convert from mm2 to in2, divide the area by 645.16.
mm2 (mm2)
Description
The square millimeter is a metric unit of area equal to a square with 1mm sides.
History
Derived from the millimeter.
Symbol Origin
Square of 'millimeter'.
Usage Context
Used for very small areas, like wires or microscopic objects.
Main Usage
International use
Did you know?
The head of a pin is about 2-3 mm².
in2 (in2)
Quick Conversion Table
| mm2 (mm2) | in2 (in2) |
|---|---|
| 1 | 0.00155 |
| 2 | 0.00310001 |
| 5 | 0.00775002 |
| 10 | 0.0155 |
| 25 | 0.0387501 |
| 50 | 0.0775002 |
| 100 | 0.155 |
| 500 | 0.775002 |
| 1000 | 1.55 |
| 2500 | 3.87501 |
| 5000 | 7.75002 |
| 10000 | 15.5 |
Frequently Asked Questions
How to convert mm2 to in2?
To convert from mm2 to in2, divide the area by 645.16.
How many in2 in 1 mm2?
1 mm2 is equal to 0.00155 in2.
What is a mm2?
The square millimeter is a metric unit of area equal to a square with 1mm sides.