mm²
What is a Square Millimeter?
Area Unit
Definition
A square millimeter is a unit of area equal to the area of a square with 1-millimeter sides, or 0.01 square centimeters.
Popular Square Millimeter Conversions
Most common conversions from Square Millimeters
1 mm² = 0.000001 m² Square Millimeter to Square Meters 1 mm² = 0.000000000001 km² Square Millimeter to Square Kilometers 1 mm² = 0.01 cm² Square Millimeter to Square Centimeters 1 mm² = 0.0000000001 ha Square Millimeter to Hectares 1 mm² = 0.00000000024711 ac Square Millimeter to Acres 1 mm² = 0.0000000000003861 mi² Square Millimeter to Square Miles
History
The square millimeter is used for very small area measurements, particularly in engineering, electronics, and scientific applications.
Common Uses
- Wire cross-sectional area
- Electronic component sizes
- Precision engineering
- Microscopy measurements
Fun Facts
Electrical wire is sized by square millimeters in metric countries
A grain of sand is about 0.5-1 square millimeters
One square centimeter equals 100 square millimeters
All Square Millimeter Conversions
Square Millimeters to Square Meters mm² → m² Square Millimeters to Square Kilometers mm² → km² Square Millimeters to Square Centimeters mm² → cm² Square Millimeters to Hectares mm² → ha Square Millimeters to Acres mm² → ac Square Millimeters to Square Miles mm² → mi² Square Millimeters to Square Yards mm² → yd² Square Millimeters to Square Feet mm² → ft² Square Millimeters to Square Inches mm² → in²