Convert Torque from Ounce-inches (ozf-in) to other units

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Ounce-inch Conversion Formulas

Ounce-inch to Newton-meter Conversion Formula

To convert from Ounce-inch (ozf-in) to Newton-meter (Nm), use the following formula:

Newton-meter (Nm)

= 0.005208333271755643 × 1.355818× Ounce-inch (ozf-in)

= 0.007061551999845192381× Ounce-inch (ozf-in)

With 1.355818 is the ratio between the base units Newton-meter (Nm) and Pound-foot (lbf-ft).


Ounce-inch to Centinewton-meter Conversion Formula

To convert from Ounce-inch (ozf-in) to Centinewton-meter (cNm), use the following formula:

Centinewton-meter (cNm)

= 0.005208333271755643 × 1.355818 × 100× Ounce-inch (ozf-in)

= 0.7061551999845192381× Ounce-inch (ozf-in)

With 1.355818 is the ratio between the base units Newton-meter (Nm) and Pound-foot (lbf-ft).


Ounce-inch to Decinewton-meter Conversion Formula

To convert from Ounce-inch (ozf-in) to Decinewton-meter (dNm), use the following formula:

Decinewton-meter (dNm)

= 0.005208333271755643 × 1.355818 × 10× Ounce-inch (ozf-in)

= 0.07061551999845192381× Ounce-inch (ozf-in)

With 1.355818 is the ratio between the base units Newton-meter (Nm) and Pound-foot (lbf-ft).


Ounce-inch to Kilogram-meter Conversion Formula

To convert from Ounce-inch (ozf-in) to Kilogram-meter (kgm), use the following formula:

Kilogram-meter (kgm)

= 0.005208333271755643 × 1.355818 × 19.806649999787735× Ounce-inch (ozf-in)

= 0.00072007790631847162056× Ounce-inch (ozf-in)

With 1.355818 is the ratio between the base units Newton-meter (Nm) and Pound-foot (lbf-ft).


Ounce-inch to Kilogram-centimeter Conversion Formula

To convert from Ounce-inch (ozf-in) to Kilogram-centimeter (kg-cm), use the following formula:

Kilogram-centimeter (kg-cm)

= 0.005208333271755643 × 1.355818 × 10.09806649999787735× Ounce-inch (ozf-in)

= 0.072007790631847162056× Ounce-inch (ozf-in)

With 1.355818 is the ratio between the base units Newton-meter (Nm) and Pound-foot (lbf-ft).


Ounce-inch to Pound-foot Conversion Formula

To convert from Ounce-inch (ozf-in) to Pound-foot (lbf-ft), use the following formula:

Pound-foot (lbf-ft)

= 0.005208333271755643× Ounce-inch (ozf-in)


Ounce-inch to Pound-inch Conversion Formula

To convert from Ounce-inch (ozf-in) to Pound-inch (lbf-in), use the following formula:

Pound-inch (lbf-in)

= 0.005208333271755643 × 12× Ounce-inch (ozf-in)

= 0.062499999261067716× Ounce-inch (ozf-in)

What Is an Ounce-inch (ozf·in)?

An ounce-inch (ozf·in) is one ounce-force applied at one inch from the axis — the smallest of the common imperial torque units.

  • 1 lbf·in = 16 ozf·in
  • 1 lbf·ft = 192 ozf·in
  • 1 ozf·in = 0.00706155 N·m

The Unit of Small Motors

Ounce-inches exist because small electric motors produce tiny torques that would be unreadable in pound-feet. A stepper motor rated at 0.35 lbf·ft is far more naturally described as 67 ozf·in, and that is how manufacturers publish it.

If you are choosing a stepper or servo for a 3D printer, CNC machine or robot, the datasheet holding-torque figure will almost certainly be in ozf·in or in N·cm.

Where Ounce-inch Is Used

  • Stepper and servo motors — holding torque and detent torque ratings.
  • Small gearmotors in appliances, printers and automation.
  • Watchmaking and instrument work — miniature screws.
  • Torque testing of caps, closures and small assemblies.

Converting Ounce-inch

FromToMultiply by
ozf·inN·m0.00706155
ozf·inlbf·in0.0625
ozf·inlbf·ft0.00520833