Convert Dyne-centimeters to Pound-inches

Formula

lbf·in = dyn·cm × 8.850745791327 × 10⁻⁷

or lbf·in = dyn·cm ÷ 1129848.290276

Derivation from SI units:

• 1 dyn·cm = 10⁻⁵ N × 0.01 m = 10⁻⁷ N·m
• 1 lbf·in = 4.4482216152605 N × 0.0254 m = 0.1129848290276 N·m
• 1 dyn·cm = 1 × 10⁻⁷ N·m ÷ 0.1129848290276 N·m per lbf·in = 8.850745791327 × 10⁻⁷ lbf·in

Both units are defined exactly, so the factor is exact. Dyne-centimeter definition: dyne-centimeter; Pound-inch definition: pound-inch.

Worked examples

1. A reading of 100 dyn·cm converts to 0.00008850745791 lbf·in.
   100 dyn·cm × 8.850745791 × 10⁻⁷ = 0.00008850745791 lbf·in
2. A value of 1e5 dyn·cm is 0.08850745791 lbf·in.
   1e5 dyn·cm × 8.850745791 × 10⁻⁷ = 0.08850745791 lbf·in

Where it's used

Dyne-centimeters are used for rheometers and viscometers (torque readings), while pound-inches appear in small fastener and electrical-terminal torques. Both measure torque (moment of force), so the conversion is a fixed factor.

Dyne-centimeter to other torque units

Frequently asked questions

Sources

• Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "dyne centimeter (dyn·cm)".
• Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "pound-force inch (lbf·in)".

Last reviewed: 2026-10-15. Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.