Convert area moment of inertia units including inches to the fourth power, feet to the fourth power, millimeters to the fourth power, centimeters to the fourth power, meters to the fourth power, and more.
Inches⁴ to millimeters⁴:
1 in⁴ = 416,231.426 mm⁴
Centimeters⁴ to millimeters⁴:
1 cm⁴ = 10,000 mm⁴
Feet⁴ to inches⁴:
1 ft⁴ = 20,736 in⁴
Meters⁴ to millimeters⁴:
1 m⁴ = 1,000,000,000,000 mm⁴
Moment of inertia conversions are useful for beam deflection calculations, steel beam tables, wood and LVL sizing, mechanical shafts, column buckling, structural shapes, and section property comparisons.
Use this converter when comparing metric and U.S. customary moment of inertia values.
Your result shows the entered area moment of inertia converted from the starting unit into the selected ending unit. The calculator also shows the conversion rate used so you can verify the calculation.
For engineering and structural design, make sure the moment of inertia unit matches your modulus of elasticity unit, span unit, beam equation, section table, or deflection calculation.
Area moment of inertia is a geometric property that measures how a cross-section's area is distributed around an axis.
Area moment of inertia uses length to the fourth power, such as in⁴, mm⁴, cm⁴, ft⁴, or m⁴.
One inch to the fourth power equals 416,231.426 millimeters to the fourth power.
No. Section modulus is moment of inertia divided by the distance to the extreme fiber.
This converter is designed for moment of inertia magnitude conversions, so it uses non-negative values.