Pound-foot (lb·ft) is the imperial unit of torque used primarily in the United States and UK for automotive engine specifications and mechanical fastener tightening. Car enthusiasts discuss engine output in lb·ft, and torque wrenches in the US are calibrated in this unit. One pound-foot equals approximately 1.356 newton-meters.

Ounce-inch (oz·in) is a small imperial torque unit used for precision instruments, watchmaking, and micro-mechanical assembly where even pound-inches would be too large. Small servo motors, camera lens mechanisms, and delicate electronics fasteners are rated in oz·in. One ounce-inch equals approximately 0.00706 newton-meters.