Conversion square inch [in²] [international] to square millimeter [mm²] Calculator

Area

In 1 square inch [in²] [international] there is 645.1599731 square millimeter [mm²].

Acceleration
Angle
Angular Acceleration
Angular Speed
Area
Concentration (molar)
Concentration Mass
Data Storage with BinaryPrefixes
Data Storagewith SI Prefixes
Data Transfer Speed with Binary Prefixes
Data Transfer Speed with SI Prefixes
Density
Electric Current
Electric Potential
Electrical Capacitance
Electrical Charge
Electrical Conductance
Electrical Resistance
Energy
Flow Rate (mass)
Flow Rate (mole)
Flow Rate (volume)
Force
Frequency
Fuel Efficiency (mass)
Fuel Efficiency (volume)
Illuminance
Inductance
Length / Distance
Luminance
Luminous Intensity
Mass
Power
Prefix (Binary)
Prefix (SI)
Pressure
Radioactivity
Speed / Velocity
Time
Torque
Viscosity (Dynamic)
Viscosity (Kinematic)
Volume