Moment of Inertia Converter

Convert between all moment of inertia units instantly. Select your units from the dropdowns below and enter a value to see the conversion in real-time.

SI unit: kilogram square metre (kg·m²)

Conversion Formula

About Moment of Inertia Units

Common Moment of Inertia Conversions

• 1 kg·m² = 10⁴ kg·cm² = 10⁶ kg·mm² ≈ 23.730 lb·ft² ≈ 0.7376 slug·ft²
• 1 slug·ft² ≈ 1.3558 kg·m² = 32.174 lb·ft² ≈ 4633 lb·in²
• 1 lb·ft² ≈ 0.04214 kg·m² = 144 lb·in² ≈ 0.03108 slug·ft²
• 1 lb·in² ≈ 2.926 × 10^-4 kg·m² = 1/144 lb·ft² ≈ 16 oz·in²
• 1 kg·cm² = 10^-4 kg·m² = 100 kg·mm² ≈ 2.373 × 10^-3 lb·ft²
• 1 g·cm² = 10^-7 kg·m² = 0.01 kg·mm² ≈ 3.418 × 10^-6 lb·ft²
• 1 t·m² = 1000 kg·m² ≈ 737.6 slug·ft² ≈ 23 730 lb·ft²
• 1 slug·in² ≈ 9.415 × 10^-3 kg·m² ≈ 32.17 lb·in² ≈ 0.2235 lb·ft²
• 1 kg·dm² = 0.01 kg·m² = 100 kg·cm² ≈ 0.2373 lb·ft²
• Parallel-axis theorem: I = I_cm + m·d² (d in m, m in kg → I in kg·m²)

Direct Converters